research-article | 17-March-2020
Root-knot nematode disease has dramatically impacted Morus alba L. production in Japan, India, and Brazil (Hida and Zhu, 1985; Sujathamma et al., 2014; Paestakahashi et al., 2015). According to Wang and Chen (1989a, 1989b), root-knot nematodes cause mulberry leaf loss of 20 to 45%, with severe cases reaching over 75% in some fields (Wang and Chen, 1989a, 1989b). Leaf quality can also be negatively impacted by this pathogen. Root-knot nematodes on mulberry in Japan have previously been
Pan Zhang,
Hudie Shao,
Chunping You,
Yan Feng,
Zhenwen Xie
Journal of Nematology, Volume 52 , 1–8
research-article | 17-March-2020
Root-knot nematodes (RKN) from the genus Meloidogyne parasitize a wide range of host plants and have a global distribution. They are considered the most important group of plant-parasitic nematodes (Jones et al., 2013). Field infestations result in economic damage due to reduction or loss of crop yield with estimated global annual losses of $110bn (Danchin et al., 2013; Bebber et al., 2014). Among RKN, the tropical species belonging to Meloidogyne Clade I reproduce asexually by mitotic
Nik Susič,
Georgios D. Koutsovoulos,
Cristian Riccio,
Etienne G. J. Danchin,
Mark L. Blaxter,
David H. Lunt,
Polona Strajnar,
Saša Širca,
Gregor Urek,
Barbara Gerič Stare
Journal of Nematology, Volume 52 , 1–5
research-article | 30-November-2020
Plant-parasitic nematodes are major constraints to sugarcane production worldwide (Ramouthar and Bhuiyan, 2018). In Australia, plant-parasitic nematodes cause 5 to 20% yield loss per year, costing over $80 million in productivity (Blair and Stirling, 2007). The most important nematodes of sugarcane in Australia are root-lesion nematode (Pratylenchus zeae) and root-knot nematode (Meloidogyne javanica). Meloidogyne javanica is primarily abundant in sandy soil and can cause significant yield loss
S. A. Bhuiyan,
K. Garlick
Journal of Nematology, Volume 53 , 1–11
research-article | 30-November-2020
Root-knot nematodes (RKN) parasitize a wide range of host plants and have a global distribution. They are considered the most important group of plant-parasitic nematodes (Jones et al., 2013). Several Meloidogyne species can attack coffee plants, but only Meloidogyne exigua (Goeldi, 1892) has a significant impact on coffee production. This pathogen is the most widely distributed nematode in the coffee production areas in Central and South America (Campos and Villain, 2005), with estimated yield
Ngan Thi Phan,
Guillaume Besnard,
Rania Ouazahrou,
William Solano Sánchez,
Lisa Gil,
Sophie Manzi,
Stéphane Bellafiore
Journal of Nematology, Volume 53 , 1–6
research-article | 29-March-2019
The peach root-knot nematode, Meloidogyne floridensis, is recognized as an emerging pathogen of commercial peach production because of its capability to overcome root-knot nematode resistance in rootstocks. This nematode was first described in Florida where it was found in 16 counties (Brito et al., 2015; Brito pers.comm). Although it was reported to infect peaches in 1966, the peach root-knot nematode was only described as a new species in 2004 (Handoo et al., 2004). In Florida, M. floridensis
Andreas Westphal,
Zin T. Z. Maung,
David A. Doll,
Mohammad A. Yaghmour,
John J. Chitambar,
Sergei A. Subbotin
Journal of Nematology, Volume 51 , 1–3
research-article | 30-November-2020
During February and May 2021, several potted American pitcher plants (Sarracenia sp.) with roots galls induced by root-knot nematodes were collected from a botanical garden in Los Angeles County, California. Based on the analysis of several molecular markers, the root-knot nematode extracted from the galled roots was identified as the Texas peanut root-knot nematode M. haplanaria (Eisenback et al., 2003) in the Nematology Laboratory, Plant Pest Diagnostics Center, California Department of Food
Sergei A. Subbotin
Journal of Nematology, Volume 53 , 1–7
Research Article | 03-September-2018
The rice root-knot nematode Meloidogyne graminicola has emerged as a devastating pest of rice in South-East Asian countries. Here we present a draft genome sequence for M. graminicola, assembled using data from short and long insert libraries sequenced on Illumina GAIIx sequencing platform.
Vishal Singh Somvanshi,
Madhura Tathode,
Rohit Nandan Shukla,
Uma Rao
Journal of Nematology, Volume 50 , ISSUE 2, 111–116
research-article | 24-April-2020
et al., 2018). Among the plant-parasitic nematodes, the most important the genus is Meloidogyne Göldi, 1887, which causes damage in the form of root galls and reduction in the number of roots, and predisposition to fungal and bacterial diseases causing losses in crop yields (Karssen, 2002; Sikora et al., 2018). Furthermore, root-knot nematodes often thrive and cause damage on perennial hosts for many years preventing them from reaching their full yield potential. The root-knot nematodes
Ricardo Andreé Vega-Callo,
María Yaquelin Mendoza-Lima,
Nataly Ruth Mamani-Mendoza,
Leslie Sharon Lozada-Villanueva,
Juan José Tamo-Zegarra,
Teodocia Gloria Casa-Ruiz,
Cristiano Bellé
Journal of Nematology, Volume 52 , 1–3
research-article | 30-November-2020
graminicola Golden and Birchfield, 1965, root infestation symptoms on South American rush (Juncus microcephalus Kunth). Root-knot symptoms of galls of J. microcephalus from the field (A, B) and in the greenhouse (C, D).
This species was identified from esterase using esterase phenotypes (n = 20 females) (Carneiro and Almeida 2001; Carneiro et al., 2000), morphological measurement of second-stage juveniles (J2) (n = 20), females (n = 10) and males (n = 10), and perineal patterns (n = 20) and through the
Cristiano Bellé,
Paulo Sergio dos Santos,
Tiago Edu Kaspary
Journal of Nematology, Volume 53 , 1–4
research-article | 13-April-2020
Pseudomonas syringae pv. tomato DC3000 (Bhardwaj et al., 2011), spore formation, and spore dispersal of fungal pathogen Hyaloperenosposra arabidopsidis is regulated by host circadian rhythm (Wang et al., 2011). Attachment and motility of bacterial pathogen Agrobacterium tumefaciens to tomato roots follow a diurnal pattern (Oberpichler et al., 2008).
Root-knot nematodes (RKN) infect almost all cultivated plants and are one of the most damaging plant-parasitic nematodes causing devastating agricultural
Shova Mishra,
Peter DiGennaro
Journal of Nematology, Volume 52 , 1–8
research-article | 30-November-2019
M. R. Moore,
J. A. Brito,
S. Qiu,
C. G. Roberts,
L. A. Combee
Journal of Nematology, Volume 52 , 1–4
research-article | 30-November-2020
dense population of second-stage juvenile. Several plant-parasitic nematode species were reported to cause damages in strawberries, and the northern root-knot nematode (RKN) Meloidogyne hapla (Chitwood, 1949) and the northern root-lesion nematode (RLN) Pratylenchus penetrans (Cobb) (Filipjev and Shuurmans Stekhoven) are the most harmful nematodes worldwide (Bélair and Khanizadeh, 1994; Brown et al., 1993; Nyoike et al., 2012; Samaliev and Mohamedova, 2011). Foliar nematodes, such as Aphelenchoides
Adem Özarslandan,
Dilek Dinçer,
Şefika Yavuz,
Ayşenur Aslan
Journal of Nematology, Volume 53 , 1–4
research-article | 30-November-2019
Sweetpotato (Ipomoea batatas (L.) Lam) is a major crop in the southeastern USA and a staple food in many tropical countries around the world. Root-knot nematodes (RKN) (Meloidogyne spp.), particularly M. incognita (Kofoid and White, 1919) Chitwood, 1949, cause significant suppression in yield and root quality of sweetpotato (Lawrence et al., 1986; Clark et al., 1992). Most recently, there has been an outbreak of M. enterolobii (Yang and Eisenback, 1983), Pacara earpod tree RKN (Yang and
Janete A. Brito,
Johan Desaeger,
D.W. Dickson
Journal of Nematology, Volume 52 , 1–6
research-article | 30-November-2020
The root-knot nematodes (RKN) of the genus Meloidogyne represent one of the most damaging and agriculturally important groups of plant-parasitic nematodes. Meloidogyne incognita, M. javanica and M. arenaria are three major tropical RKN species, which are globally distributed and polyphagous pests of many agricultural crops. These nematodes together with several other species are commonly referred to the tropical RKN complex (Álvarez-Ortega et al., 2019).
Early and rapid detection of RKN in soil
Sergei A. Subbotin,
Julie Burbridge
Journal of Nematology, Volume 53 , 1–11
research-article | 24-April-2020
Root-knot nematodes (Meloidogyne spp.) are obligate, sedentary endoparasites that can infect both the below- and above-ground parts of many crops at different developmental stages. Meloidogyne spp. are serious pathogens of multiple vegetable crops in the southern United States and worldwide (Johnson et al., 1992; Jones et al., 2013; Hajihassani, Davis, and Timper, 2019; Hajihassani, Rutter, and Luo, 2019). In Georgia, more than 66% of vegetable growing areas are infested with at least one
Negin Hamidi,
Abolfazl Hajihassani
Journal of Nematology, Volume 52 , 1–10
research-article | 19-March-2020
root-knot nematodes (RKN) are widely spread and highly damaging (Zakaria et al., 2013). The four predominant species are Meloidogyne arenaria, M. incognita, M. javanica, and Meloidogyne hapla (Jones et al., 2013). De Waele and Elsen (2007) have reported the difficulty in controlling the damage caused by Meloidogyne species due to their short life cycle and broad host range.
Biological control is a highly preferred, effective, non-polluting, and environmentally safe approach that should be
Anusha Pulavarty,
Karina Horgan,
Thomais Kakouli-Duarte
Journal of Nematology, Volume 52 , 1–10
Research Article | 03-December-2018
Cowpea (Vigna unguiculata L. Walp) is an affordable source of protein and strategic legume crop for food security in Africa and other developing regions; however, damage from infection by root-knot nematodes (RKN) suppresses cowpea yield. The deployment through breeding of resistance gene Rk in cowpea cultivars has provided protection to cowpea growers worldwide for many years. However, occurrence of more aggressive nematode isolates threatens the effectiveness of this monogenic resistance. A
Arsenio D. Ndeve,
William C. Matthews,
Jansen R. P. Santos,
Bao Lam Huynh,
Philip A. Roberts
Journal of Nematology, Volume 50 , ISSUE 4, 545–558
research-article | 06-March-2020
M. R. Moore,
J. A. Brito,
S. Qiu,
C. G. Roberts,
L. A. Combee
Journal of Nematology, Volume 52 , 1–3
Research Article | 17-October-2018
Citrullus amarus (CA) (previously known as Citrullus lanatus var. citroides) accessions collected in southern Africa are known to have resistance to root-knot nematodes (RKN) and are suitable rootstocks for grafted watermelon. The objective of this study was to conduct a comparative metabolomics analysis and identify unique metabolites in roots of CA accessions versus roots of watermelon cultivars (Citrullus lanatus (Thunb.) Matsum. and Nakai var. lanatus; CL). Nuclear magnetic resonance (NMR
Mihail Kantor,
Amnon Levi,
Judith Thies,
Nihat Guner,
Camelia Kantor,
Stuart Parnham,
Arezue Boroujerdi
Journal of Nematology, Volume 50 , ISSUE 3, 303–316
Article | 24-July-2017
Root-knot nematodes are important pests of cut foliage crops in Florida. Currently, effective nematicides for control of these nematodes on cut foliage crops are lacking. Hence, research was conducted at the University of Florida to identify pesticides or biopesticides that could be used to manage these nematodes. The research comprised on-farm, field, and greenhouse trials. Nematicide treatments evaluated include commercial formulations of spirotetramat, furfural, and Purpureocillium lilacinum
RICHARD BAIDOO,
TESFAMARIAM MENGISTU,
ROBERT MCSORLEY,
ROBERT H. STAMPS,
JANETE BRITO,
WILLIAM T. CROW
Journal of Nematology, Volume 49 , ISSUE 2, 133–139
research-article | 30-November-2020
Cotton (Gossypium hirsutum L.) and soybean (Glycine max L.) are economically important crops in the United States and worldwide. In the U.S. alone, cotton yield in 2018 was 18.4 million bales, and soybean yield was 4.54 billion bushels (Anonymous, 2018). Meloidogyne incognita (Kofoid and White) Chitwood, the southern root-knot nematode, is broadly distributed in soils cultivated with cotton (Xiang et al., 2017b) and other crops (Huang et al., 2016), and causes economically significant yield
Mohammad K. Hassan,
Kathy S. Lawrence,
Edward J. Sikora,
Mark R. Liles,
Joseph W. Kloepper
Journal of Nematology, Volume 53 , 1–17
Article | 24-July-2017
The following work was initiated to determine the scope of application methodology and fumigant combinations for increasing efficacy of 1,3-dichloropropene (1,3-D) and metam sodium for management of root-knot nematodes (Meloidogyne spp.) in Florida. A series of five experiments were set up during spring and fall seasons to evaluate the potential of different fumigants, alone or in combination, in polyethylene film tomato production. The most promising chemical alternatives to methyl bromide, in
JOHAN DESAEGER,
DONALD W. DICKSON,
S. J. LOCASCIO
Journal of Nematology, Volume 49 , ISSUE 2, 140–149
Article | 21-July-2017
Southern root-knot nematode (RKN, Meloidogyne incognita) is a serious pest of cultivated watermelon (Citrullus lanatus var. lanatus) in southern regions of the United States and no resistance is known to exist in commercial watermelon cultivars. Wild watermelon relatives (Citrullus lanatus var. citroides) have been shown in greenhouse studies to possess varying degrees of resistance to RKN species. Experiments were conducted over 2 yr to assess resistance of southern RKN in C. lanatus var
JUDY A. THIES,
JENNIFER J. ARISS,
CHANDRASEKAR S. KOUSIK,
RICHARD L. HASSELL,
AMNON LEVI
Journal of Nematology, Volume 48 , ISSUE 1, 14–19
research-article | 30-November-2019
Root-knot nematodes (RKN; Meloidogyne spp.) are a worldwide problem in the cultivation of both fruit and vegetable crops (Jones et al., 2013). There are approximately 100 different species of Meloidogyne (with new species being described often) (Jones et al., 2013) and specific species or “races” usually parasitize only a select range of host plants (Moens et al., 2009). The life cycle of RKN lasts approximately 30 days, depending on species and environmental conditions (Ploeg and Maris, 1999
J. R. De Long,
M. A. Streminska,
A. Persijn,
H. M. I. Huisman,
C. van der Salm
Journal of Nematology, Volume 52 , 1–12
research-article | 30-November-2020
). Abundant and diverse populations of bacterial endophytes have been identified in various crops such as potato (Sturz et al., 1999; Garbeva et al., 2001), maize (Fisher et al., 1992; McInroy & Kloepper, 1995), cotton (McInroy & Kloepper, 1995) and cucumber (Mahafee & Kloepper, 1997).
Plant parasitic nematodes are the major constraints in crop production and cause an estimated $157 billion loss annually to different agricultural crops (Abad et al., 2008). Among plant parasitic nematodes, root-knot
Binita Basumatary,
Debanand Das,
B. N. Choudhury,
Pranab Dutta,
Ashok Bhattacharyya
Journal of Nematology, Volume 53 , 1–16
research-article | 30-November-2019
influenced due to the attack by several pathogens, such as bacteria, fungi, viruses, nematodes, and abiotic factors. Plant parasitic nematodes are the most harmful pests of vegetable crops, responsible for an annual yield loss amounting to 9 to 15% of the world crop yield (Koenning et al., 2004). Among all the plant parasitic nematodes, root-knot nematodes (Meloidogyne spp.) are a hidden threat to okra (Marin et al., 2017). It has been reported that root-knot nematode causes annual losses up to 29% in
J.A. Patil,
Anil Kumar,
Saroj Yadav,
K.K. Verma
Journal of Nematology, Volume 52 , 1–7
research-article | 30-November-2020
In May 2021, the soil sample taken from a potted elephant ear plant (Caladium sp.) originating from San Antonio, Texas, USA was sent for analysis in the Nematology Laboratory, Plant Pest Diagnostics Center, California Department of Food and Agriculture, Sacramento, California. Several second-stage juveniles (J2) of the root-knot nematodes (RKN) were detected in the extracts from this soil sample. The analysis of these juveniles using several molecular markers revealed that this sample contained
Sergei A. Subbotin,
Julie Burbridge
Journal of Nematology, Volume 53 , 1–6
research-article | 30-November-2020
yellowing followed by bronzing and marginal necrosis of leaves, delayed and poor flowering, shedding of leaves, reduction in fruit size, and decline of guava trees leading to complete destruction of the orchards within a short span of time of one to two years (Ashokkumar and Poornima, 2019). Root-knot nematode infestation at Ayakudi and surrounding villages of Dindigul district which are the major Guava growing area in Tamil Nadu was reported by Poornima et al. (2016) for the first time and the nematode
N. Ashokkumar,
K. Poornima,
P. Kalaiarasan,
P. Jeyakumar,
D. Uma,
M. Kavino,
S. Dharani,
S. Kothai
Journal of Nematology, Volume 53 , 1–15
research-article | 17-March-2020
Root-knot nematodes are the most damaging group of plant-parasitic nematodes (Gill and McSorley, 2011). Since they have a wide host range worldwide, root-knot nematodes cause serious economic losses in plants (Jones et al., 2013). In addition, they can cause more serious damage by forming disease complexes with soil pathogens (Siddiqui et al., 2014; Lobna et al., 2016).
Medicinal and aromatic plants are widely used in pharmacy and perfumery industries. Lavender (Lavandula spp.) is mainly grown
Tevfik Özalp,
Gonca Könül,
Önder Ayyıldız,
Adnan Tülek,
Zübeyir Devran
Journal of Nematology, Volume 52 , 1–3
research-article | 30-November-2020
, needle, ring, stunt, pin, lance, and stubby root nematodes (Tylka et al., 2011; Yan et al., 2016).
The Seville root-knot nematode, Meloidogyne hispanica (Hirschmann, 1986) was studied for the first time by Dalmasso and Bergé (1978) from Seville, Spain from peach rootstock (Prunus persica silvestris Batsch) and later described as M. hispanica by Hirschmann (1986). The species has been reported infecting many economically important crops such as tomato, beet, corn, pepper, cucumber, eggplant, potato
Andrea M. Skantar,
Zafar A. Handoo,
Sergei A. Subbotin,
Mihail R. Kantor,
Paulo Vieira,
Paula Agudelo,
Maria N. Hult,
Stephen Rogers
Journal of Nematology, Volume 53 , 1–7
Article | 05-December-2017
Abstract: The bacterium Pasteuria penetrans is a parasite of root-knot nematodes (Meloidogyne spp.). Endospores of P. penetrans attach to the cuticle of second-stage juveniles (J2) and subsequently sterilize infected females. When encumbered by large numbers of spores, juveniles are less mobile and their ability to infect roots is reduced. This study looked at different factors that influence spore attachment of P. penetrans to the root-knot nematode Meloidogyne arenaria. Pretreatment of J2
CHANG LIU,
PATRICIA TIMPER,
PINGSHENG JI,
TESFAMARIAM MEKETE,
SOUMI JOSEPH
Journal of Nematology, Volume 49 , ISSUE 3, 304–310
research-article | 21-October-2020
. soybean, wheat, barley, maize, quinoa, potato, sugarbeet, sugarcane, and peanut) (Bajwa et al., 2019).
C. album is more problematic than other species of the genus, as the is more widespread and infests more number of crops, and it also acts as an alternate host of several crop pests and pathogens (Bellé et al., 2019). In this context, several weed species have been reported to host root-knot nematodes (Meloidogyne spp. Göldi, 1887). This genus of root-knot nematodes has the largest impact on major
Jorge Airton Gómez-Chatata,
Teodocia Gloria Casa-Ruiz,
Juan José Tamo-Zegarra,
Cristiano Bellé
Journal of Nematology, Volume 52 , 1–4
research-article | 09-April-2020
W. R. Silva,
C. P. Machaca-Calsin,
C. B. Gomes
Journal of Nematology, Volume 52 , 1–3
research-article | 30-November-2020
-parasitic nematodes, among which the root-knot nematodes (Meloidogyne spp. Göldi). This phytoparasite genus has the greatest impact on crops in the world, in addition to being the genus most frequently found in parasitic weed roots (Bellé et al., 2019; Ferraz et al., 1978; Moens and Perry, 2009). In Brazil, an increasing number of studies have been developed that report weeds, present in agricultural areas, as natural hosts of several species of nematodes of the genus Meloidogyne (Bellé et al., 2016
Tiago Edu Kaspary,
Ismail Teodoro de Souza Júnior,
Rodrigo Ferraz Ramos,
Cristiano Bellé
Journal of Nematology, Volume 53 , 1–6
research-article | 30-November-2018
non-inoculated plants did not exhibit any galls. The morphological and molecular characterization of this re-isolated root-knot nematode were identical those of M. javanica.
This is the first report of M. javanica parasitising S. dulcis in Brazil. Globally, M. javanica is considered an economically important agricultural nematode reported over 770 plant species, including tea [(Camellia sinensis (L.) Kuntze], grape (Vitis sp. L.), many vegetables, fruit trees, weeds, cereals, and ornamentals
Cristiano Bellé,
Rodrigo Ferraz Ramos,
Andressa Lima de Brida,
Tiago Edu Kaspary
journal of nematology, Volume 51 , 1–3
research-article | 21-October-2020
Province, Peru. In order to identify the plant-parasitic nematode species, a combination of morphological, biochemical, and molecular analyses were performed.
Figure 1:
A and B: Roots of Brassica nigra (L.) W.D.J. Koch showing galls induced by Meloidogyne incognita (Kofoid and White, 1919; Chitwood, 1949).
This population of root-knot nematode was identified to species with esterase phenotypes (n = 36 females) (Carneiro and Almeida, 2001); morphology, and morphometrics of second-stage juveniles
Jorge Airton Gómez-Chatata,
Juan José Tamo-Zegarra,
Teodocia Gloria Casa-Ruiz,
Cristiano Bellé
Journal of Nematology, Volume 52 , 1–3
research-article | 30-November-2020
Over 4,100 species of plant-parasitic nematodes (PPNs) pose a major threat to the present day agriculture accounting an estimated yield loss of US$ 173 billion every year (Decraemer and Hunt, 2006). Amongst the top 10 PPN species that cause majority of the economic damage worldwide, root-knot nematodes (RKNs) of genus Meloidogyne are considered to be the most severe (Elling, 2013; Jones et al., 2013). The second-stage juveniles (J2s) of RKNs enter the plant roots and develop permanent feeding
Alkesh Hada,
Divya Singh,
Kranti Kavalipurapu Veera Venkata Satyanarayana,
Madhurima Chatterjee,
Victor Phani,
Uma Rao
Journal of Nematology, Volume 53 , 1–14
research-article | 26-April-2019
Abolfazl Hajihassani,
Weimin Ye,
Brooke B. Hampton
Journal of Nematology, Volume 51 , 1–3
research-article | 30-November-2018
The peach root-knot nematode (RKN), Meloidogyne floridensis (Handoo et al., 2004), is an important parasite that can severely impact commercial peach production because of its capability to overcome RKN resistance in peach rootstocks. This nematode species was first described in Florida in 2004 (Handoo et al., 2004) where it is currently found in 12 counties (Brito et al., 2015) and was recently detected in two counties in California (Westphal et al., 2019).
In 2018 to 2019, during surveys for
Gregory L. Reighard,
William G. Henderson,
Sarah O. Scott,
Sergei. A. Subbotin
journal of nematology, Volume 51 , 1–6
research-article | 30-November-2020
safe, cheap and the overall preferred method to manage pests and diseases. Root-knot nematodes (RKN), Meloidogyne spp., are among the most damaging pests causing significant economic loss in a range of agricultural crops including tomato. Tomato is considered one of the best hosts of RKN and results in yield losses ranging from 25 to 100% (Seid et al., 2015). Fortunately, tomato is one of the few vegetable commodities where resistance against RKN is commercially available. The resistance is
Homan Regmi,
Noor Abdelsamad,
Peter DiGennaro,
Johan Desaeger
Journal of Nematology, Volume 53 , 1–11
research-article | 30-November-2020
. 2018; Nascimento et al. 2020). Root-knot (Meloidogyne spp.) are problems in the main cultures of Brazil, causing serious damage and losses in several locations and cultures (Ferraz and Brown, 2016). M. incognita is a serious problem in crops such as maize, sugarcane, coffee, cotton, vegetables, and many others, being responsible for severe losses in Brazil (Ferraz and Brown, 2016).
Currently, there are few hop breeding programs in Brazil, one of them is located in Jaboticabal (Tiengo, 2019) where M
R. F. Gonsaga,
A. Souza Pollo,
D. D. Nascimento,
R. J. Ferreira,
L. T. Braz,
P. L. M. Soares
Journal of Nematology, Volume 53 , 1–4
research-article | 30-November-2020
Eggplant (Solanum melongena L.) is a member of the Solanaceae family and has wide genetic variation in shape, colour and size (Daunay et al., 2001). In 2019, eggplant was grown in 1.8 M hectares, with a total production of 55 M tons worldwide. Turkey is the world’s fourth largest eggplant producer after China, India, and Egypt, with an annual production of 8.2 M tons (FAO, 2021). Root-knot nematodes (RKNs) are one of the most important pathogens affecting eggplant. The use of plants resistant
Seren Sargın,
Zübeyir Devran
Journal of Nematology, Volume 53 , 1–7
research-article | 14-June-2021
Industrial hemp (Cannabis sativa L.) is a new crop for Alabama with the recent legalization and hemp acreage is increasing each year. In the first season of legal production, hemp plants (cultivar ‘Boax’ and ‘Otto2’) in a commercial field located in Geneva County, AL exhibited stunted growth, poor root development, and numerous galls typical of root-knot nematode (Meloidogyne spp.) infection. After harvest in September 2019, 75 L of soil were collected from the field in the area with
Bisho R. Lawaju,
William Groover,
Jessica Kelton,
Kassie Conner,
Edward Sikora,
Kathy S. Lawrence
Journal of Nematology, Volume 53 , 1–3
research-article | 23-April-2019
Root-knot nematodes, Meloidogyne spp., are one of the most yield-limiting parasites of peppers (Capsicum annuum L.) in the USA and worldwide (Sasser and Freckman, 1987; Thies and Fery, 2000). These parasites are widely distributed across the world and are adapted to develop and reproduce on peppers in tropical and subtropical climates. Infection of peppers by Meloidogyne spp. can cause changes in the plant physiology, fruit morphology and yield. Three species of M. incognita (Kofoid & White
Abolfazl Hajihassani,
William B. Rutter,
Xuelin Luo
Journal of Nematology, Volume 51 , 1–9
research-article | 30-November-2019
The barley root-knot nematode, Meloidogyne naasi Franklin, 1965 was originally described from field crops (cereals, grasses, and sugarbeet, Beta vulgaris L.) in England and Wales (Franklin, 1965). According to the EPPO Global Database, this nematode is present in temperate regions in all continents: Africa (Libya); Asia (Iran); Europe (Belgium, Czech Republic, Denmark, France, Germany, Hungary, Ireland, Italy, Malta, the Netherlands, Norway, Poland, Serbia and UK); North America (Canada, USA
M. Clara Vieira dos Santos,
M. Teresa M. Almeida,
Sofia R. Costa
Journal of Nematology, Volume 52 , 1–4
research-article | 30-November-2020
Qinjiao (Gentiana macrophylla) is a perennial herb of the Gentianaceae family, mainly produced in Mongolia, Russia, and China. Gentiana macrophylla has been widely cultivated in the southwest region of China for medicinal uses (Zhang et al., 2003). Severely stunted and withered Qinjiao plants with rotted and galled roots were observed in a field of the Yulong country (N 99°46′; E 27°18′) in September 2020. These are typical symptoms of infection by root-knot nematodes (RKN; Meloidogyne spp
Wentao Wu,
Shanshan Xu,
Zewen Gao,
Shusheng Zhu,
Youyong Zhu,
Yang Wang,
Xiahong He
Journal of Nematology, Volume 53 , 1–3
research-article | 30-November-2020
Root-knot nematodes belonging to the genus Meloidogyne are one of the most damaging plant-parasitic nematodes of the world (Jones et al., 2013). These nematodes parasitize thousands of plant species and cause significant yield loss (Agrios, 2005; CABI, 2020; Jones et al., 2013). Among more than 100 known species, the tropical (Meloidogyne arenaria (Chitwood, 1949; Neal, 1889), Meloidogyne incognita (Chitwood, 1949; Kofoid and White, 1919), and Meloidogyne javanica (Chitwood, 1949; Treub, 1885
Ke Long Phan,
Thi Mai Linh LE,
Huu Tien Nguyen,
Thi Duyen Nguyen,
Quang Phap Trinh
Journal of Nematology, Volume 53 , 1–8
research-article | 06-November-2020
Meloidogyne mali (Itoh et al., 1969) is a root-knot nematode (RKN) causing significant damage by inducing root galls on its host plant and consequently reduced host growth by interfering with the uptake of water and nutrients. M. mali has a wide host range, typically on trees, but can also parasitize on shrubs and herbaceous plants (Ahmed et al., 2013).
M. mali was first described in Japan in 1969, with the type host apple (Malus domestica Borkh.) (Itoh et al., 1969). In 2000, a root-knot
Jianfeng Gu,
Yiwu Fang,
Lele Liu
Journal of Nematology, Volume 52 , 1–11
Research Article | 03-September-2018
Vetiver, a nonhost grass for certain nematodes, was studied for the production of compounds active against the southern root-knot nematode, Meloidogyne incognita. In laboratory assays studying the effects on second-stage juvenile (J2) activity and viability, crude vetiver root and shoot extracts were nematotoxic, resulting in 40% to 70% J2 mortality, and were also repellent to J2. Vetiver oil did not exhibit activity against J2 in these assays. Gas chromatography-mass spectrometry analyses of
Kansiree Jindapunnapat,
Nathan D. Reetz,
Margaret H. MacDonald,
Ganga Bhagavathy,
Buncha Chinnasri,
Noppamas Soonthornchareonnon,
Anongnuch Sasnarukkit,
Kamlesh R. Chauhan,
David J. Chitwood,
Susan L.F. Meyer
Journal of Nematology, Volume 50 , ISSUE 2, 147–162
research-article | 17-March-2020
(Wrather and Koenning, 2003, 2006). Two nematodes of major concern for soybean production in Arkansas include the soybean cyst nematode (Heterodera glycines, Ichinoe) and the southern root-knot nematode (Meloidogyne incognita, Kofoid & White, Chitwood). Both nematodes have been historically present in Arkansas soybean and cotton fields (Kirkpatrick et al., 1992; Bateman et al., 2000; Walter and Barker, 1994; Tylka and Marett, 2014). A survey from 2018 identified that soybean cyst and root-knot nematode
J. E. Wilkes,
T. L. Kirkpatrick
Journal of Nematology, Volume 52 , 1–15
Article | 21-July-2017
Florida accounts for more than 75% of the national cut foliage production. Unfortunately, root-knot nematodes (RKN) (Meloidogyne spp.) are a serious problem on these crops, rendering many farms unproductive. Currently, information on the Meloidogyne spp. occurring on most commonly cultivated cut foliage crops in Florida, and tools for their rapid identification are lacking. The objectives of this study were to (i) identify specific RKN infecting common ornamental cut foliage crops in Florida
RICHARD BAIDOO,
SOUMI JOSEPH,
TESFAMARIAM M. MENGISTU,
JANETE A. BRITO,
ROBERT MCSORLEY,
ROBERT H. STAMPS,
WILLIAM T. CROW
Journal of Nematology, Volume 48 , ISSUE 3, 193–202
Research Article | 17-October-2018
. The addition of these DNA sequences to GenBank and the Barcode of Life Database (BOLD) should stimulate and facilitate root-knot nematode identification and provide a first step in new species discovery.
Thomas Powers,
Timothy Harris,
Rebecca Higgins,
Peter Mullin,
Kirsten Powers
Journal of Nematology, Volume 50 , ISSUE 3, 399–412
research-article | 30-November-2018
D. magna genotypes were raised under low-food conditions, their offspring showed varying levels of resistance to parasites.
Pasteuria penetrans is an obligate bacterial pathogen of root-knot nematodes, Meloidogyne spp. The infection process of P. penetrans has multiple steps during which the nematode could resist infection. The first step is attachment of endospores to the cuticle of the second-stage juvenile (J2). Individuals within a root-knot nematode population have been shown to vary in
Chang Liu,
Pingsheng Ji,
Patricia Timper
Journal of Nematology, Volume 51 , 1–8
research-article | 30-November-2021
restricted to tropical and subtropical regions because of elevated temperatures and humidity that are ideal for growth (Luttrell et al., 1994). These climate conditions are found in the cotton belt of the Southern United States where most cotton production occurs (Jones and Durand, 1959).
The reniform nematode (Rotylenchulus reniformis Linford and Oliveira) and the southern root-knot nematode (Meloidogyne incognita Kofoid and White) are the most economically important nematodes on upland cotton
Kara L. Gordon,
Drew W. Schrimsher,
Kathy S. Lawrence
Journal of Nematology, Volume 54 , 1–15
research-article | 30-November-2019
nodule-like gall were elucidated by light, scanning, and transmission electron microscopy (Eisenback and Dodge, 2012; Dodge, 2014). The galls induced by M. kikuyensis are unique and more complex than those caused by most root-knot nematode species. The vascular tissues that supply the giant cells with nutrients occur at a right angle to the vascular cylinder in the main root. Unlike most species of root-knot nematodes, feeding cells of M. kikuyensis appear to be formed by the dissolution of cell
J. D. Eisenback,
P. Vieira
Journal of Nematology, Volume 52 , 1–13
research-article | 24-April-2020
Plant-parasitic nematodes are an important limiting factor in vegetable production, and in many areas a major factor requiring extensive use of pesticides. Root-knot nematodes (RKNs) of the genus Meloidogyne (Göldi, 1887), which their population increase to damaging levels within a few seasons under susceptible crops, are so common in subtropical and tropical vegetable production that frequently they are taken to represent “nematodes” in general (Sikora and Fernandez, 2005). The populations of
Reza Ghaderi,
Ali Asghar Dehghan,
Abbas Mokaram Hesar,
Akbar Karegar
Journal of Nematology, Volume 52 , 1–13
research-article | 17-March-2020
Rice (Oryza sativa) is a major life-sustaining crop in India and feeds more than 60% of the population. During 2014 to 2015, the area under rice crop in India was 43.86 million ha with a total rice production of 105.48 million tons (Anonymous, 2016). Rice root-knot nematode, Meloidogyne graminicola, is widely distributed across diverse agro-climatic conditions in India (Salalia et al., 2017) and it has emerged as the economically most threatening plant-parasitic nematode in rice nurseries
Richa Baronia,
Puneet Kumar,
S. P. Singh,
R. K. Walia
Journal of Nematology, Volume 52 , 1–9
Research Article | 17-October-2018
We investigated Solanum nigrum (seeds) and Datura stramonium (shoots) against root-knot nematodes in terms of J2 paralysis and egg hatch inhibition (methanol extract), as well as inhibition of nematode development in host roots (soil amending with either S. nigrum seeds’ or D. stramonium shoots’ meal). Datura stramonium was found equally effective at inhibiting motility of Meloidogyne incognita and Meloidogyne javanica (both EC50 = 427 μg mL−1 at 3 day), but inhibition occurred more quickly for
Chrisostomos Oplos,
Kodjo Eloh,
Urania-Menkissoglu Spiroudi,
Caboni Pierluigi,
Nikoletta Ntalli
Journal of Nematology, Volume 50 , ISSUE 3, 317–328
research-article | 12-August-2021
Plant-parasitic nematodes are microorganisms associated with economically important agricultural crops. Their parasitism may cause considerable yield suppressions, 9 to 15% of worldwide production (Nicol et al., 2011), thus representing a major constraint for global food security. Root-knot nematodes (Meloidogyne spp.) have been ranked first among genera of plant-parasitic nematodes that threatens world agriculture (Jones et al., 2013).
A new emerging species, Meloidogyne floridensis, has been
Diego A. H. S. Leitão,
Elvira M. R. Pedrosa,
Donald W. Dickson,
Ana Karina S. Oliveira,
Mario Monteiro Rolim
Journal of Nematology, Volume 53 , 1–10
research-article | 15-April-2019
Root-knot nematodes (RKNs; Meloidogyne spp.) are sedentary endoparasitic nematodes that can infect a wide range of plant species worldwide, which results in approximately $70 billion in crop losses annually (Caboni et al., 2012). Meloidogyne spp. is ranked within the top 10 most economically devastating plant-parasitic nematodes, with Meloidogyne incognita, M. arenaria, M. hapla, and M. javanica as the four major crop-damaging species (Jones et al., 2013). In tomato, yield loss due to RKNs
Noor Abdelsamad,
H. Regmi,
J. Desaeger,
P. DiGennaro
Journal of Nematology, Volume 51 , 1–10
research-article | 30-November-2019
Nematodes are important parasites of crops. The economic losses caused by nematodes worldwide exceed 157 billion US dollars annually (Abad et al., 2008). Root-knot nematodes have a wide host range and are especially harmful to plants in the Cucurbitaceae and Solanaceae (Nicol et al., 2011). Tomato is extensively cultivated worldwide and highly susceptible. When the southern root-knot nematode (RKN) Meloidogyne incognita infects tomato, the second-stage juveniles (J2) penetrate young roots
Qing-Qing Li,
Jing-Jing Li,
Qi-Tong Yu,
Ze-Yu Shang,
Chao-Bin Xue
Journal of Nematology, Volume 52 , 1–11
research-article | 21-January-2022
Florida growers are considering peach (Prunus persica [L.] Batsch) (Sharpe, 1967) as a viable alternative crop because of the availability of several quality low-chill peach cultivars well-adapted to the subtropical climate and the unique advantage of an early-season market (Olmstead et al., 2015). Peach rootstocks with root-knot nematode (RKN) resistance, a necessary component for the productivity and longevity of an orchard, have primarily been developed in rootstock breeding programs. The
Sai Qiu,
Mary Ann D. Maquilan,
Jose X. Chaparro,
Janete A. Brito,
Thomas G. Beckman,
Donald W. Dickson
Journal of Nematology, Volume 53 , 1–12
Original Research | 18-July-2017
Abstract
The root-knot nematodes (RKN), Meloidogyne spp., represent an important threat to yam (Dioscorea spp.) production in West Africa. With the aim to establish the diversity of RKN species affecting yam tubers, for control and resistance screening purposes, surveys were conducted in the main yam producing areas of Nigeria. Galled tubers (N = 48) were collected from farmers’ stores and markets in nine states in Nigeria and in one district in Ghana. RKN isolated from yam tubers were
Yao A. Kolombia,
Gerrit Karssen,
Nicole Viaene,
P. Lava Kumar,
Nancy de Sutter,
Lisa Joos,
Danny L. Coyne,
Wim Bert
Journal of Nematology, Volume 49 , ISSUE 2, 177–188
research-article | 16-January-2021
Rice (Oryza sativa L.) is one of the major cereal crops produced in Pakistan and is cultivated on an area of 2,900,600 hectares with a production of 11,174,700 tons (FAO, 2017). As a staple food, its consumption exceeds 100 kg per capita annually in most of the Asian countries (Seck et al., 2012). Several biotic and abiotic constraints limit the yield and quality of rice. Among biotic constraints, plant-parasitic nematodes are an emerging threat to rice production. Root-knot nematodes (RKNs
Abdul Jabbar,
Nazir Javed,
Anjum Munir,
Huma Abbas,
Sajid A. Khan,
Anam Moosa,
Muhammad Jabran,
Byron J. Adams,
Muhammad A. Ali
Journal of Nematology, Volume 52 , 1–17
research-article | 30-November-2019
indicated that the loline alkaloid N-formylloline could either attract or repel the plant-parasitic nematode Pratylenchus scribneri, depending on the loline concentration (Bacetty, Snook, Glenn, Noe, Nagabhyru and Bacon, 2009).
While endophytes can affect susceptibility of grasses to nematodes, host status may be more strongly influenced by plant cultivar than by presence or absence of endophyte. For example, tall fescue ‘Kentucky 31’, with or without endophytes, was a host for the Southern root-knot
Susan L. F. Meyer,
Brian J. Patchett,
Timothy J. Gillanders,
Mihail R. Kantor,
Patricia Timper,
Margaret H. MacDonald
Journal of Nematology, Volume 52 , 1–16
research-article | 16-April-2020
Peanut (Arachis hypogaea) is an important crop in the United States with 757,000 ha planted in 2018, worth $1.15 billion (NASS-USDA, 2019a, b). Much of the production is concentrated in the Southeast where Meloidogyne arenaria (peanut root-knot nematode (PRKN)) can significantly reduce yields with suppression approaching 50% observed in field research (Rodriguez-Kabana and Robertson, 1987; Rodriguez-Kabana et al., 1994a, 1994b). Damage thresholds for this nematode are 1 egg/100 cm3, so any
Zane J. Grabau,
Mark D. Mauldin,
Alemayehu Habteweld,
Ethan T. Carter
Journal of Nematology, Volume 52 , 1–10
Article | 24-July-2017
Two years of field trials conducted in a Meloidogyne incognita-infested field evaluated grafting and Paladin Pic-21 (dimethyl disulfide:chloropicrin [DMDS:Pic] 79:21) for root-knot nematode and weed control in tomato and melon. Tomato rootstocks evaluated were; ‘TX301’, ‘Multifort’, and ‘Aloha’. ‘Florida 47’ was the scion and the nongrafted control. A double crop of melon was planted into existing beds following tomato harvest. Melon
NANCY KOKALIS-BURELLE,
DAVID M. BUTLER,
JASON C. HONG,
MICHAEL G. BAUSHER,
GREG MCCOLLUM,
ERIN N. ROSSKOPF
Journal of Nematology, Volume 48 , ISSUE 4, 231–240
research-article | 30-November-2019
. columbus, Belonolaimus longicaudatus, Dolichodorus heterocephalus, Nanidorus minor, and Ditylenchus destructor (Rhoades, 1964; Bird and Hogger, 1973; Minton et al., 1987; De Waele et al., 1990; Schroeder et al., 1993). Furthermore, nutsedge tuber counts were highly correlated with soil infestation densities of M. incognita (Thomas et al., 1995; Ou et al., 2008).
In Florida’s high-value vegetable and strawberry production systems nutsedges are a primary weed problem, and root-knot nematodes (RKN) of
Maria de Lourdes Mendes,
Donald W. Dickson,
William T. Crow
Journal of Nematology, Volume 52 , 1–9
research-article | 30-November-2020
The production of tomato (Solanum lycopersicum) is a very important industry in the United States with 10 billion kg tomatoes worth $1.6 billion United States dollars (USD) produced in 2019 (USDA-NASS, 2020). Florida produces 54% of fresh market tomatoes, an industry that produced 646 million kg worth $705 million (USD) nationwide in 2019 (USDA-NASS, 2020). Meloidogyne incognita (southern root-knot nematode, SRKN) is a major pest in tomato production, and there are relatively few management
Zane J. Grabau,
Chang Liu,
Rebeca Sandoval-Ruiz
Journal of Nematology, Volume 53 , 1–12
research-article | 30-November-2020
entry wounds for secondary pathogens (Shalini et al., 2014). Of all identified nematodes, only 15% cause significant economic crop losses (Bernard et al., 2017; Koenning et al., 1999). Genera of highest economic importance in the U.S. include Meloidogyne, Heterodera, Pratylenchus, Hoplolaimus, Xiphinema, and Rotylenchulus (Bernard et al., 2017; Koenning et al., 1999).
Meloidogyne incognita, the southern root-knot nematode (RKN), is the most devastating threat to agricultural crop production
Shalini Yerukala,
Ernest C. Bernard,
Kimberly D. Gwinn,
David M. Butler,
Parwinder S. Grewal,
Bonnie H. Ownley
Journal of Nematology, Volume 53 , 1–16
research-article | 30-November-2018
Root-knot nematodes (RKN, Meloidogyne spp.) are sedentary endoparasites with wide host ranges, including most important agricultural crops, and cause billions of dollars in yield losses (Sasser and Freckman, 1987). The first genomes of M. hapla and M. incognita were available in 2008 (Abad et al., 2008; Opperman et al., 2008), and now the genomes of seven RKN species, including the abovementioned two, and M. arenaria, M. enterolobii, M. floridensis, M. javanica are publicly available. The
Weiming Hu,
Peter M. DiGennaro
journal of nematology, Volume 51 , 1–11
Article | 21-July-2017
Pseudomonas fluorescens isolates Clinto 1R, Wayne 1R, and Wood 1R, which produce the antibiotic 2,4-diacetylphloroglucinol (DAPG), can suppress soilborne diseases and promote plant growth. Consequently, these beneficial bacterial isolates were tested on watermelon plants for suppression of Meloidogyne incognita (root-knot nematode: RKN) and Fusarium oxysporum f. sp. niveum (Fon). In a greenhouse trial,Wayne 1R root dip suppressed numbers of RKN eggs per gram root on ‘Charleston Gray’ watermelon
SUSAN L. F. MEYER,
KATHRYNE L. EVERTS,
BRIAN MCSPADDEN GARDENER,
EDWARD P. MASLER,
HAZEM M. E. ABDELNABBY,
ANDREA M. SKANTAR
Journal of Nematology, Volume 48 , ISSUE 1, 43–53
Article | 21-July-2017
Steam and soil solarization were investigated for control of the root-knot nematode Meloidogyne arenaria in 2 yr of field trials on a commercial flower farm in Florida. The objective was to determine if preplant steam treatments in combination with solarization, or solarization alone effectively controlled nematodes compared to methyl bromide (MeBr). Trials were conducted in a field with naturally occurring populations of M. arenaria. Treatments were solarization alone, steam treatment after
NANCY KOKALIS-BURELLE,
ERIN N. ROSSKOPF,
DAVID M. BUTLER,
STEVEN A. FENNIMORE,
JOHN HOLZINGER
Journal of Nematology, Volume 48 , ISSUE 3, 183–192
research-article | 30-November-2021
the terms “Cannabis × nemato*” and “hemp × nemato*”. The abstract of each article was read to determine if its subject matter concerned plant-parasitic nematodes and Cannabis sativa, as many hits dealt with sunn hemp (Crotalaria juncea L.), Bombay hemp or kenaf (Hibiscus cannabinus L.) and other plants. To determine the total number of records for root-knot nematodes, the terms “Meloidogyne”, “Heterodera radicicola” and “Heterodera marioni” were searched. Because Web of Science contains a number
Ernest C. Bernard,
Angel G. Chaffin,
Kimberly D. Gwinn
Journal of Nematology, Volume 54 , 1–18
research-article | 30-November-2020
hectares planted in Virginia alone in 2020 (USDA, 2020). Root-knot nematodes (Meloidogyne spp.) can seriously complicate production for tobacco growers in the southeastern United States, causing crop losses of 1 to 5% in Virginia in affected fields (Fortnum et al., 2001; Koenning et al., 1999). The use of resistant cultivars for root-knot nematode management is a fundamental tool for flue-cured tobacco growers (Johnson et al., 2005), particularly in light of the increasing restrictions on some of the
Noah Adamo,
Charles S. Johnson,
T. David Reed,
Jonathan D. Eisenback
Journal of Nematology, Volume 53 , 1–9
research-article | 06-November-2020
Root-knot nematodes (RKN; Meloidogyne spp.) cause economic damage to a wide range of economically important open field and greenhouse vegetable crops and are considered one of the most damaging agricultural pests worldwide. The genus Meloidogyne has an extremely broad host range of over 2000 plant species, which can cause significant yield losses (Chitwood, 2003; Bleve-Zacheo et al., 2007).
The control of nematodes has become increasingly difficult due to many reasons. Many nematicides and soil
Eleni Nasiou,
Ioannis O. Giannakou
Journal of Nematology, Volume 52 , 1–10
research-article | 17-September-2019
Rumex spp. is a common weed in the southern of the Brazil, where it infests pastures, annuals crop and orchards. In September 2017, Rumex plants with root-knot disease were collected in the municipality of Pelotas, state of Rio Grande do Sul, Brazil. Initially, specimens were obtained by Coolen and D’Herde (1972) and later identified through morphological studies and esterase phenotypes (Carneiro and Almeida, 2001). Perineal patterns were consistent with Meloidogyne ethiopica (Whitehead, 1968
L. A. Yánez Márquez,
M. Divers,
W. R. Silva,
J. V. de Araújo Filho,
C. B. Gomes
journal of nematology, Volume 51 , 1–2
research-article | 30-November-2020
Root-knot nematodes are microscopic, endoparasitic roundworms that are a major limiting factor in the production of potatoes, which are the fourth most important food crop in the world (Birch et al., 2012; Lima et al., 2018). Meloidogyne chitwoodi (Golden et al., 1980) (Tylenchida: Meloidogynidae) is a root-knot nematode with limited worldwide distribution, and in the United States, M. chitwoodi is widely spread in the three states (Washington, Oregon, and Idaho) that produce over half of US
Lei Zhang,
Cynthia Gleason
Journal of Nematology, Volume 53 , 1–13
research-article | 26-April-2019
: aPlot size: 6.1 m long section of 152-cm wide beds. Two lines of sweetpotato planted per bed.
Table 2
Average yield (n = 5 ± standard error) of harvested sweetpotato after four treatments assigned to three categories, market (marketable size and quality), cull RKN (culled because of root-knot nematode damage), and cull other (culled because of non-nematode causes). Field trials were conducted during 2016 (cultivar O’Henry) and 2017 (cultivar Beauregard) at SCREC, Irvine, CA1
Antoon Ploeg,
Scott Stoddard,
J. Ole Becker
Journal of Nematology, Volume 51 , 1–8
Article | 21-July-2017
Most commercial tobacco cultivars possess the Rk1 resistance gene to races 1 and 3 of Meloidogyne incognita and race 1 of Meloidogyne arenaria, which has caused a shift in population prevalence in Virginia tobacco fields toward other species and races. A number of cultivars now also possess the Rk2 gene for root-knot resistance. Experiments were conducted in 2013 to 2014 to examine whether possessing both Rk1 and Rk2 increases resistance to a variant of M. incognita race 3 compared to
JILL R. POLLOK,
CHARLES S. JOHNSON,
J. D. EISENBACK,
T. DAVID REED
Journal of Nematology, Volume 48 , ISSUE 2, 79–86
Research Article | 26-September-2018
ANDRESSA LIMA DE BRIDA,
ÉRIKA CRISTINA SOUZA DA SILVA CORREIA,
BÁRBARA MONTEIRO DE CASTRO E CASTRO,
JOSÉ COLA ZANUNCIO,
SÍLVIA RENATA SICILIANO WILCKEN
Journal of Nematology, Volume 49 , ISSUE 4, 386–389
Article | 21-July-2017
KELLY A. MORRIS,
DAVID B. LANGSTON,
RICHARD F. DAVIS,
JAMES P. NOE,
DON W. DICKSON,
PATRICIA TIMPER
Journal of Nematology, Volume 48 , ISSUE 2, 65–71
research-article | 30-November-2020
Plant parasitic nematodes, especially root-knot nematodes (Meloidogyne spp.), cause serious yield losses in vegetables, ornamental and medicinal plants, and horticultural crops around the world (Devran et al., 2017; Karssen et al., 2013; Pintea et al., 2003). The plantation areas of ornamental and medicinal plants in tropical and sub-tropical countries have significantly increased recently in order to be used in pharmaceutical, perfumery, cosmetic and food industries (Pandey, 2017). Calendula
Hürkan Ataş,
Gülsüm Uysal,
Çiğdem Gözel,
Tevfik Özalp,
Uğur Gözel,
Zübeyir Devran
Journal of Nematology, Volume 53 , 1–5
research-article | 30-November-2020
Will L. Groover,
Kathy S. Lawrence
Journal of Nematology, Volume 53 , 1–14
research-article | 30-November-2018
Several species of the genus Meloidogyne (root-knot nematodes, RKN) have been reported in Portugal: M. arenaria (Neal, 1889) Chitwood, 1949; M. chitwoodi Golden et al., 1980; M. hapla Chitwood, 1949; M. hispanica Hirschmann, 1986; M. incognita (Kofoid and White, 1919) Chitwood, 1949; M. javanica (Treub, 1885) Chitwood, 1949; and M. lusitanica Abrantes and Santos, 1991 (Abrantes et al., 2008; Conceição et al., 2009). In 2013, the tropical RKN, M. luci Carneiro et al., 2014, was detected in a
Duarte Santos,
António Correia,
Isabel Abrantes,
Carla Maleita
Journal of Nematology, Volume 51 , 1–4
Article | 21-July-2017
Meloidogyne enterolobii is one of the most important root-knot nematode in tropical regions, due to its ability to overcome resistance mechanisms of a number of host plants. The lack of new and safe active ingredients against this nematode has restricted control alternatives for growers. Egg-parasitic fungi have been considered as potential candidates for the development of bionematicides. In tissue culture plates, Pochonia chlamydosporia (var. catenulata and chlamydosporia) and
SILAS D. SILVA,
REGINA M. D. G. CARNEIRO,
MARCOS FARIA,
DANIELA A. SOUZA,
ROSE G. MONNERAT,
ROGERIO B. LOPES
Journal of Nematology, Volume 49 , ISSUE 1, 77–85
Research Article | 31-May-2018
Weimin Yuan,
C. C. Holbrook,
Y. Chu,
P. Ozias-Akins,
D. W. Dickson
Journal of Nematology, Volume 50 , ISSUE 1, 33–40
research-article | 09-April-2020
nematodes, especially root-knot nematodes (Meloidogyne spp.), are worldwide an extremely important limiting factor in vegetable production (Hallmann and Meressa, 2018).
Tomato (Solanum lycopersicon L.) is one of the most common vegetables grown in SA (FAO, 2017). Tomato can be infected by a wide variety of plant-parasitic nematodes but predominantly by root-knot nematodes which can cause significant yield losses (Jones et al., 2017). A nematode survey in rural and peri-urban households, community and
Mbokota Candy Khosa,
Zakheleni Dube,
Dirk De Waele,
Mieke Stefanie Daneel
Journal of Nematology, Volume 52 , 1–7
research-article | 30-November-2019
The southern root-knot nematode, Meloidogyne incognita (Kofoid and White) Chitwood, is widely distributed across the southern USA. In the Southern High Plains of Texas, M. incognita infested 40 to 50% of the cotton fields (Starr et al., 1993; Wheeler et al., 2000). In the absence of nematode management tactics, it is estimated that M. incognita reduces yield in the west Texas area by an average of 26% (Orr and Robinson, 1984). Management options for this nematode include crop rotation
Terry A. Wheeler,
Kerry Siders,
Cecilia Monclova-Santana,
Jane K. Dever
Journal of Nematology, Volume 52 , 1–8
research-article | 30-November-2019
Root-knot nematodes (RKNs, Meloidogyne spp.) are global pests comprised of more than 100 nominal species, and attack a large number of host-plants. Meloidogyne enterolobii Yang and Eisenback, 1983 is an aggressive RKN species with high reproduction potential that infects a wide range of hosts (Brito et al., 2004). Originally, Yang and Eisenback (1983) described M. enterolobii infecting Pacara earpod trees (Enterolobium contortisiliquum (Vell.) Morong) from Hainan Island of China. Subsequently
Tushar Manohar Ghule,
Victor Phani,
Vishal Singh Somvanshi,
Maya Patil,
Somnath Bhattacharyya,
Matiyar Rahaman Khan
Journal of Nematology, Volume 52 , 1–9
Research Article | 17-October-2018
Neem is a perennial plant of family Meliaceae grown very commonly in India. During a survey in Rajasthan, India; a population of root-knot nematode was found in association with tender neem plants causing yellowing, stunting, and heavy root galling. Inspection of the perineal pattern morphology of the adult females, extracted from the galled roots, primarily led to identification of the species as Meloidogyne indica. Further, detailed morphological and morphometric illustrations of second-stage
Victor Phani,
Satyapal Bishnoi,
Amita Sharma,
Keith G. Davies,
Uma Rao
Journal of Nematology, Volume 50 , ISSUE 3, 387–398
research-article | 26-October-2020
Plant-parasitic nematodes cause significant damage in tropical and subtropical agriculture. Among them, the Meloidogyne species, also known as root-knot nematode, affect agricultural production (Jones et al., 2011). The biggest problem in areas infested with these nematodes is the difficulty of managing and controlling them. Many nematicidal products have been withdrawn from the market due to their high toxicity to human beings and the environment (Sousa et al., 2015). Consequently, there is an
Vanessa Alves Gomes,
Fabíola de Jesus Silva,
Eunice Maria Baquião,
Luana Viana Faria,
Júlio César Antunes Ferreira,
Marcio Pozzobon Pedroso,
Fernando Broetto,
Silvia Renata Siciliano Wilcken
Journal of Nematology, Volume 52 , 1–12
research-article | 30-November-2020
United States in 2018, sorghum was planted on approximately 6 million acres, largely in the Great Plains (USDA-NASS 2019), and it is often grown as a rotation crop with cotton (Gossypium hirsutum), corn (Zea mays), or soybeans (Glycine max) (Xavier-Mis et al., 2017). Because of its drought tolerance and relatively low input requirements, sorghum could be more widely used as a cost-effective rotation crop in the southeastern US.
Meloidogyne incognita is the most commonly occurring species of root-knot
Richard F. Davis,
Karen R. Harris-Shultz,
Joseph E. Knoll,
Hongliang Wang
Journal of Nematology, Volume 53 , 1–10
Research Article | 03-December-2018
J. A. Brito,
S. A. Subbotin,
J. Desaeger,
F. Achinelly,
S. Qiu
Journal of Nematology, Volume 50 , ISSUE 4, 543–544
research-article | 30-November-2018
University revealed several unusual morphological characters and a unique host range that indicated it was a new species. The perineal pattern, shape of the female stylet, and shape of the male head and stylet were unique and different from those of any other described species. Meloidogyne aegracyperi n. sp. is described herein, and the common name ‘nutsedge root-knot nematode’ is proposed. The specific epithet was derived from the Latin word ‘aegra’ and the host plant name, meaning ‘diseased Cyperus
J. D. Eisenback,
L. A. Holland,
J. Schroeder,
S. H. Thomas,
J. M. Beacham,
S. F. Hanson,
V. S. Paes-Takahashi,
P. Vieira
journal of nematology, Volume 51 , 1–16
research-article | 30-November-2019
in productivity (Moens et al., 2009).
In October 2019, samples of roots of Zinnia elegans with galls caused by root-knot nematode were sampled in vegetable gardens in the city of Pacoti (4° 13′ 45″S; 38° 55′ 26″ W), in the state of Ceará, Brazil. Nematodes in the roots were processed for extraction using the protocol given by Coolen and D’Herde (1972). For the morphological characterization of the species, 20 females and juveniles of second stage were measured and perineal pattern from 20 females
Francisco Jorge Carlos Souza Junior,
Mayara Castro Assunção
Journal of Nematology, Volume 52 , 1–4
Article | 21-July-2017
NIKOLETTA NTALLI,
MARLENA RATAJCZAK,
CHRISOSTOMOS OPLOS,
URANIA MENKISSOGLU-SPIROUDI,
ZBIGNIEW ADAMSKI
Journal of Nematology, Volume 48 , ISSUE 4, 248–260
Article | 05-December-2017
Protogamasellus mica was extracted from a sugarcane field in Australia and cultured on bacterial-feeding nematodes. Studies with various nematodes in laboratory arenas showed that one mite and its progeny reduced nematode numbers by between 26 and 50 nematodes/day. A bacterivore (Mesorhabditis sp.), a fungivore (Aphelenchus avenae), and two plant parasites (root-knot nematode, Meloidogyne javanica and root-lesion nematode, Pratylenchus zeae) were all reduced at much the same rate despite the
GRAHAM R. STIRLING,
A. MARCELLE STIRLING,
DAVID E. WALTER
Journal of Nematology, Volume 49 , ISSUE 3, 327–333
Research Article | 03-September-2018
Pasteuria penetrans is a Gram-positive, endospore forming soil bacterium, infecting root-knot nematodes, Meloidogyne spp. Being obligate in nature, the bacterium is not easily grown in vitro, and the in vivo culturing technique is relied on the soil-based microcosm since long. Hence, culturing of P. penetrans using CYG germination pouches as a soil-less medium for plant growth, promises to provide a contamination free environment along with ease in isolation of infected females from the plant
Victor Phani,
Uma Rao
Journal of Nematology, Volume 50 , ISSUE 2, 91–98
Research Article | 03-December-2018
Plant-parasitic, root-knot nematodes (Meloidogyne spp.) are a serious problem in agri- and horticultural crops worldwide. Understanding their complex host recognition process is essential for devising efficient and environmental-friendly management tactics. In this study, the authors report a new, simple, inexpensive, efficient, and quantitative method to analyze the chemotaxis of M. incognita second-stage juveniles (J2s) using a combination of pluronic gel and agar in a petri dish. The authors
Tagginahalli N. Shivakumara,
Tushar K. Dutta,
Uma Rao
Journal of Nematology, Volume 50 , ISSUE 4, 487–494