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  • Journal Of Nematology


research-article | 13-April-2020

Root-knot nematodes demonstrate temporal variation in host penetration

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 | 19-March-2020

Effect of an Alltech soil health product on entomopathogenic nematodes, root-knot nematodes and on the growth of tomato plants in the greenhouse

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 | 24-April-2020

First report of southern root-knot nematode, Meloidogyne incognita, infecting pomegranate, Punica granatum, in Peru

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 | 21-October-2020

Chenopodium album is a weed host of Meloidogyne incognita (Nematoda: Meloidogynidae) in Peru

. 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 | 30-November-2018

First report of Meloidogyne javanica (Nematoda: Meloidogynidae) infecting Scoparia dulcis, a medicinal plant in Brazil

Cristiano Bellé, Rodrigo Ferraz Ramos, Andressa Lima de Brida, Tiago Edu Kaspary

journal of nematology, Volume 51 , 1–3

research-article | 24-April-2020

Differences in parasitism of root-knot nematodes (Meloidogyne spp.) on oilseed radish and oat

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 | 30-November-2019

First report of root-knot nematodes (Meloidogyne species) infecting Chinese Elm (Ulmus parvifolia) in Florida, USA

M. R. Moore, J. A. Brito, S. Qiu, C. G. Roberts, L. A. Combee

Journal of Nematology, Volume 52 , 1–4

Article | 21-July-2017

Mitochondrial Haplotype-based Identification of Root-knot Nematodes (Meloidogyne spp.) on Cut Foliage Crops in Florida

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


Journal of Nematology, Volume 48 , ISSUE 3, 193–202

research-article | 30-November-2018

Maternal Stress Reduces the Susceptibility of Root-Knot Nematodes to Pasteuria Penetrans

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 | 24-April-2020

Genetic intraspecific diversity of Meloidogyne javanica parasitizing vegetables in southern Iran

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-October-2018

Nematicidal Weeds, Solanum nigrum and Datura stramonium

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

Original Research | 18-July-2017

Diversity of Root-knot Nematodes Associated with Tubers of Yam (Dioscorea spp.) Established Using Isozyme Analysis and Mitochondrial DNA-based Identification

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 | 17-October-2018

NMR Analysis Reveals a Wealth of Metabolites in Root-Knot Nematode Resistant Roots of Citrullus amarus Watermelon Plants

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

research-article | 30-November-2019

Nematicidal effect of cruciferous bio-fumigants against the root-knot nematode, Meloidogyne incognita infesting okra

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-2019

Biological control of Meloidogyne spp. in glasshouse-grown chrysanthemum

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 | 17-March-2020

Characterization of root-knot nematodes infecting mulberry in Southern China

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 | 06-March-2020

First report of Meloidogyne enterolobii infecting Japanese blue berry tree (Elaeocarpus decipiens) in Florida, USA

M. R. Moore, J. A. Brito, S. Qiu, C. G. Roberts, L. A. Combee

Journal of Nematology, Volume 52 , 1–3

research-article | 30-November-2020

Report of the Texas peanut root-knot nematode, Meloidogyne haplanaria (Tylenchida: Meloidogynidae) from American pitcher plants (Sarracenia sp.) in California

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 | 17-March-2020

Genome sequence of the root-knot nematode Meloidogyne luci

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

Genome sequence of the coffee root-knot nematode Meloidogyne exigua

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 | 21-October-2020

First report of southern root-knot nematode, Meloidogyne incognita, infecting Brassica nigra in Peru

Jorge Airton Gómez-Chatata, Juan José Tamo-Zegarra, Teodocia Gloria Casa-Ruiz, Cristiano Bellé

Journal of Nematology, Volume 52 , 1–3

Research Article | 26-September-2018

Oat, Wheat, and Sorghum Genotype Reactions to Meloidogyne incognita and Meloidogyne javanica


Journal of Nematology, Volume 49 , ISSUE 4, 386–389

research-article | 30-November-2018

First Report of the Root-Knot Nematode, Meloidogyne floridensis Infecting Guardian® Peach Rootstock in South Carolina, USA

Gregory L. Reighard, William G. Henderson, Sarah O. Scott, Sergei. A. Subbotin

journal of nematology, Volume 51 , 1–6

Article | 21-July-2017

Efficacy of Various Application Methods of Fluensulfone for Managing Root-knot Nematodes in Vegetables


Journal of Nematology, Volume 48 , ISSUE 2, 65–71

research-article | 17-March-2020

First report of root-knot nematode, Meloidogyne arenaria, on lavender in Turkey

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

First report of rice root-knot nematode, Meloidogyne graminicola, infecting Juncus microcephalus in Brazil

Cristiano Bellé, Paulo Sergio dos Santos, Tiago Edu Kaspary

Journal of Nematology, Volume 53 , 1–4

research-article | 30-November-2020

Host status of morning-glory (Ipomoea spp.) to Meloidogyne species

-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 | 29-March-2019

First Report of the Peach Root-Knot Nematode, Meloidogyne floridensis Infecting Almond on Root-Knot Nematode Resistant ‘Hansen 536’ and ‘Bright's Hybrid 5’ Rootstocks in California, USA

, California. Almond trees (Prunus dulcis) grafted onto peach-almond hybrid rootstocks ‘Hansen 536’ and ‘Bright’s Hybrid®5’, both resistant to southern root-knot nematode (M. incognita) and Javanese root-knot nematode (M. javanica) and having ‘Okinawa’ and ‘Nemaguard’, respectively, in their parentage (McKenry et al., 2007) showed strong symptoms of growth decline (Fig. 1). Extracted root-knot nematodes were identified by both morphological and molecular methods as M. floridensis at the Plant Pest

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

First report and new molecular and morphological characterizations of root-knot nematode, Meloidogyne javanica, infecting ginger and long coriander in Vietnam

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

Article | 24-July-2017

Grafting and Paladin Pic-21 for Nematode and Weed Management in Vegetable Production


Journal of Nematology, Volume 48 , ISSUE 4, 231–240

Article | 05-December-2017

Influence of Root Exudates and Soil on Attachment of Pasteuria penetrans to Meloidogyne arenaria

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


Journal of Nematology, Volume 49 , ISSUE 3, 304–310

research-article | 09-April-2020

Examine medicinal plants from South Africa for suppression of Meloidogyne incognita under glasshouse conditions

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 | 17-October-2018

Discovery and Identification of Meloidogyne Species Using COI DNA Barcoding

Thomas Powers, Timothy Harris, Rebecca Higgins, Peter Mullin, Kirsten Powers

Journal of Nematology, Volume 50 , ISSUE 3, 399–412

research-article | 30-November-2019

Further observations on Meloidogyne enterolobii (Nematoda: Meloidogynidae) infecting guava (Psidium guajava) in India

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 | 30-November-2019

First report of Meloidogyne javanica infecting Zinnia elegans in Ceará State, Brazil

Francisco Jorge Carlos Souza Junior, Mayara Castro Assunção

Journal of Nematology, Volume 52 , 1–4

research-article | 06-November-2020

The potential of eugenol as a nematicidal agent against Meloidogyne javanica (Treub) Chitwood

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

Article | 21-July-2017

Acetic Acid, 2-Undecanone, and (E)-2-Decenal Ultrastructural Malformations on Meloidogyne incognita


Journal of Nematology, Volume 48 , ISSUE 4, 248–260

Research Article | 03-September-2018

Activity of Vetiver Extracts and Essential Oil against Meloidogyne incognita

suggest that plant chemistry plays a role in the nonhost status of vetiver to root-knot nematodes, and that the chemical constituents of vetiver may be useful for suppressing nematode populations in the soil.

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 | 30-November-2020

Degree of resistance of Solanum torvum cultivars to Mi-1.2-virulent and avirulent isolates of Meloidogyne incognita, Meloidogyne javanica, and Meloidogyne luci

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 | 30-November-2020

Transcriptome Analyses of Pre-parasitic and Parasitic Meloidogyne Chitwoodi Race 1 to Identify Putative Effector Genes

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

Article | 24-July-2017

Methyl Bromide Alternatives for Control of Root-knot Nematode (Meloidogyne spp.) in Tomato Production in Florida

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


Journal of Nematology, Volume 49 , ISSUE 2, 140–149

Article | 24-July-2017

Management of Root-knot Nematode (Meloidogyne incognita) onPittosporum tobira Under Greenhouse, Field, and On-farm Conditions in Florida

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


Journal of Nematology, Volume 49 , ISSUE 2, 133–139

Research Article | 03-September-2018

Revisiting the Life-Cycle of Pasteuria penetrans Infecting Meloidogyne incognita under Soil-Less Medium, and Effect of Streptomycin Sulfate on its Development

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

A novel in vitro chemotaxis bioassay to assess the response of Meloidogyne incognita towards various test compounds

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

research-article | 26-April-2019

Control of Meloidogyne incognita in sweetpotato with fluensulfone

-knot nematodes (RKN: Meloidogyne spp.) are economically the most damaging nematodes in sweetpotato both on a worldwide scale as well as in California (Overstreet, 2009). Crop loss estimates of 10% due to RKN were reported in California (Koenning et al., 1999). Unlike many other vegetable crops, most sweetpotato cultivars are particularly sensitive to RKN damage because symptoms develop directly on the harvested product. Symptoms of RKN on the harvested storage roots depend on the sweetpotato

Antoon Ploeg, Scott Stoddard, J. Ole Becker

Journal of Nematology, Volume 51 , 1–8

research-article | 30-November-2020

Reproduction of Meloidogyne arenaria race 2 on flue-cured tobacco with putative resistance derived from Nicotiana repanda

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

Article | 21-July-2017

Evaluation of Steam and Soil Solarization for Meloidogyne arenaria Control in Florida Floriculture Crops


Journal of Nematology, Volume 48 , ISSUE 3, 183–192

research-article | 15-April-2019

Nicotinamide adenine dinucleotide induced resistance against root-knot nematode Meloidogyne hapla is based on increased tomato basal defense

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

Morphological and molecular characterization of Pratylenchus species from Yam (Dioscorea spp.) in West Africa

most damaging. They affect yield and tuber quality, reducing yam production and tuber storability (Ayensu and Coursey, 1972; Bridge et al., 2005; Coyne and Affokpon, 2018). The major plant-parasitic nematodes known to cause serious damage on yam tubers are the yam nematode (Scutellonema bradys (Steiner and LeHew, 1933; Andrássy, 1958), root-knot nematodes (Meloidogyne spp.) and root-lesion nematodes (RLN) (Pratylenchus spp.) (Bridge et al., 2005; Bridge and Starr, 2007; Kolombia et al., 2016b

Yao A. Kolombia, Oluwadamilola Ogundero, Emmanuel Olajide, Nicole Viaene, P. Lava Kumar, Danny L. Coyne, Wim Bert

Journal of Nematology, Volume 52 , 1–25

Article | 05-December-2017

Vertical Distribution of Pasteuria penetrans Parasitizing Meloidogyne incognita on Pittosporum tobira in Florida

Pasteuria penetrans is considered as the primary agent responsible for soil suppressiveness to root-knot nematodes widely distributed in many agricultural fields. A preliminary survey on a Pittosporum tobira field where the grower had experienced a continuous decline in productivity caused by Meloidogyne incognita showed that the nematode was infected with Pasteuria penetrans. For effective control of the nematode, the bacterium and the host must coexist in the same root zone. The vertical


Journal of Nematology, Volume 49 , ISSUE 3, 311–315

research-article | 30-November-2019

Compatibility of fluazaindolizine and oxamyl with Pasteuria penetrans on spore attachment to juveniles of Meloidogyne javanica and M. incognita

bacterium parasitizing root-knot nematodes (RKN, Meloidogyne spp.) (Sayre and Starr, 1985), with potential as a biocontrol agent of these nematodes (Chen and Dickson, 1998). The first step in the P. penetrans-Meloidogyne interaction is the attachment of the bacterial spores on the cuticle of juveniles (J2). Spores are immobile and attachment takes place when the J2 moves and comes into contact with them. If a high number of spores attaches to the J2, movement is hindered and the nematode may not be able

Eleni Nasiou, Tim Thoden, Iro V. Pardavella, Emmanuel A. Tzortzakakis

Journal of Nematology, Volume 52 , 1–7

research-article | 30-November-2020

Evaluation of root-knot nematode resistance assays for sugarcane accession lines in Australia

preliminary study found no commercial varieties of sugarcane were resistant to root-knot nematodes in Australia (Stirling et al., 2011). Modern sugarcane varieties were derived from crosses between noble cane Saccharum officinarum, and a wild relative of sugarcane S. spontaneum, which were then backcrossed to S. officinarum or other complex hybrids (Cox et al., 2000). These interspecific hybridisations provided resistance to diseases and tolerance to a range of biotic and abiotic stresses (Cox et al

S. A. Bhuiyan, K. Garlick

Journal of Nematology, Volume 53 , 1–11

Research Article | 03-December-2018

Broad-based root-knot nematode resistance identified in cowpea gene-pool two

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 | 30-November-2018

Identification of Suitable Meloidogyne spp. Housekeeping Genes

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

research-article | 26-April-2019

First report of Meloidogyne javanica on Ginger and Turmeric in the United States

Abolfazl Hajihassani, Weimin Ye, Brooke B. Hampton

Journal of Nematology, Volume 51 , 1–3

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