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  • Journal Of Nematology


research-article | 06-November-2020

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

Barker (1973), we used sodium hypochlorite solution to extract Meloidogyne javanica eggs, from infested tomato roots (Solanum lycopersicum cv. Belladona). Eggs suspension was sieved through 53 and 38 μm, rinsed thoroughly with tap water and was collected into a 100 ml beaker. We estimated the number of eggs in the suspension using an inverted microscope (100 ×). Inoculum level was adjusted to 100 eggs per ml and used directly in the bioassay experiment. The effect of eugenol solutions on the

Eleni Nasiou, Ioannis O. Giannakou

Journal of Nematology, Volume 52 , 1–10

research-article | 23-April-2020

Plant-parasitic nematodes associated with the root zone of hop cultivars planted in a Florida field soil

, the University of Florida planted hop rhizomes at the Gulf Coast Research and Education Center in Hillsborough County, Florida to evaluate the potential of this crop. By late 2016, some of the hop plants were showing stunted growth and yellow leaves. Uprooted plants exhibited severe root galling, and females extracted from galls, as well as J2s extracted from soil, were subsequently identified as Meloidogyne javanica (Brito et al., 2018). In Florida, root-knot nematodes (Meloidogyne spp.) are

Tristan T. Watson, Marco Suarez, Zhanao Deng, Johan A. Desaeger

Journal of Nematology, Volume 52 , 1–10

research-article | 30-November-2019

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

1.40) typical of M. javanica (Fig. 1B). Figure 1: (A) Perineal pattern of Meloidogyne javanica, (B) Esterase phenotypes of M. javanica detected in Zinnia elegans (J3: M. javanica; J3*: M. javanica reference isolate). The sequences submitted to GenBank ITS: MT337435 and D2 to D3 28S: MT341299 of the studied rDNA regions, showed 98 to 99% identity with sequences of M. javanica isolates from Brazil, China, and India. Phylogenetic analyzes of these sequences, using ML, placed the Meloidogyne

Francisco Jorge Carlos Souza Junior, Mayara Castro Assunção

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

molecular analyses were performed. Figure 1: Sweet broom (Scoparia dulcis L.) roots showing galls caused by Meloidogyne javanica (Treub, 1885) Chitwood, 1949 infection. To identify this Meloidogyne population, the following techniques were used: esterase phenotypes (n = 40 females) (Carneiro and Almeida, 2001); morphology and morphometrics of second-stage juveniles (J2) (n = 40) and females (n = 20), and perineal patterns (n = 20); and molecular characterization of the mitochondrial DNA region

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

journal of nematology, Volume 51 , 1–3

research-article | 30-November-2020

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

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

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 | 21-July-2017

Optimum Concentrations of Trichoderma longibrachiatum and Cadusafos for Controlling Meloidogyne javanica on Zucchini Plants

A factorial experiment was established in a completely randomized design to verify the effect of different inoculum levels of an Iranian isolate of Trichoderma longibrachiatum separately and in combination with various concentrations of cadusafos against Meloidogyne javanica in the greenhouse. Zucchini seeds were soaked for 12 hr in five densities (0, 105, 106, 107, and 108 spores/ml suspension) of the fungus prior to planting in pots containing four concentrations of cadusafos (0, 0.5, 1, and


Journal of Nematology, Volume 48 , ISSUE 1, 54–63

research-article | 24-April-2020

Genetic intraspecific diversity of Meloidogyne javanica parasitizing vegetables in southern Iran

isolates of other three species (data not presented). The primers of M. incognita yielded a 1,200 bp band for four isolates of greenhouse cucumber in Fasa region (Fig. 2). Morphometric characters for the females, J2s, and males of some populations of M. javanica are given in Table 3. Table 3. Average of the morphometrics of females, J2s and males of five populations of Meloidogyne javanica parasitizing vegetables in southern Iran. Females Males Second-stage juveniles (J2s

Reza Ghaderi, Ali Asghar Dehghan, Abbas Mokaram Hesar, Akbar Karegar

Journal of Nematology, Volume 52 , 1–13

Research Article | 26-September-2018

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

Meloidogyne spp. are the most economically important species of plant-pathogenic nematodes. Plant resistance and crop rotation are the main nematode management methods. Thus, the objective was to evaluate the resistance of seven wheat genotypes, five oat genotypes, ten sorghum hybrids, and three sorghum–sudangrass genotypes to Meloidogyne incognita and Meloidogyne javanica. The crops were sowed in pots with an auto-claved substrate. A single plant/pot was left after thinning. The soil was


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

research-article | 16-April-2019

First report of cultivated Cretan mountain tea (Sideritis syriaca) as a host of Meloidogyne hapla and M. javanica in Crete, with some additional records on the occurrence of Meloidogyne species in Greece

Emmanuel A. Tzortzakakis, Carolina Cantalapiedra-Navarrete, Antonio Archidona-Yuste, Maria Kormpi, Juan E. Palomares-Rius, Pablo Castillo

Journal of Nematology, Volume 51 , 1–4

Research Article | 17-October-2018

Discovery and Identification of Meloidogyne Species Using COI DNA Barcoding

DNA barcoding with a new cytochrome oxidase c subunit 1 primer set generated a 721 to 724 bp fragment used for the identification of 322 Meloidogyne specimens, including 205 new sequences combined with 117 from GenBank. A maximum likelihood analysis grouped the specimens into 19 well-supported clades and four single-specimen lineages. The “major” tropical apomictic species (Meloidogyne arenaria, Meloidogyne incognita, Meloidogyne javanica) were not discriminated by this barcode although some

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

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

research-article | 26-April-2019

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

Fig. 1 Ginger (Zingiber officinale) (A) and turmeric (Curcuma longa) infected with Meloidogyne javanica from an organic farm in Wheeler County, Georgia showing severely galled roots. Numerous egg masses of the nematode are evident protruding from galled roots of both ginger (C) and turmeric (D). Fig. 2 Healthy ginger (left) and ginger infected with Meloidogyne javanica (right) showing stunted growth of the rhizomes, collected from nematode-infested soils on an organic farm in Wheeler

Abolfazl Hajihassani, Weimin Ye, Brooke B. Hampton

Journal of Nematology, Volume 51 , 1–3

Article | 05-December-2017

The Mesostigmatid Mite Protogamasellus mica, an Effective Predator of Free-Living and Plant-Parasitic Nematodes

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


Journal of Nematology, Volume 49 , ISSUE 3, 327–333

research-article | 30-November-2018

Diversity and seasonal fluctuation of tylenchid plant-parasitic nematodes in association with alfalfa in the Kerman Province (Iran)

), Helicotylenchus pseudorobustus, Meloidogyne javanica, Merlinius brevidens, Nanidorus minor, Pratylenchus cruciferus, P. neglectus, Amplimerlinius globigerus and Scutylenchus rugosus. Unidentified species, Aphelenchoides, Paratylenchus and Rotylenchus, were also present. Figure 2: (A-K) Prominence, mean population densities and occurrence of 11 plant-parasitic nematode species identified from the bulk soil of alfalfa plants in five counties during four consecutive seasons (Autumn; Winter; Spring; Summer) in

Ebrahim Shokoohi, Phatu William Mashela, Fahimeh Iranpour

Journal of Nematology, Volume 51 , 1–14

Research Article | 03-December-2018

First Report of the Root-Knot Nematode (Meloidogyne javanica) Infecting Hops (Humulus lupulus) in Florida, USA

J. A. Brito, S. A. Subbotin, J. Desaeger, F. Achinelly, S. Qiu

Journal of Nematology, Volume 50 , ISSUE 4, 543–544

research-article | 24-April-2020

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

females with no egg-mass in the root tissues were considered young females, whereas egg-laying females were considered adult females (Fig. 2). This experiment was conducted twice. Table 1. Reproduction of Meloidogyne javanica, M. incognita race 3, and M. arenaria race 1 on oilseed radish, white (Tachiibuki) and black (Pratex) oats under greenhouse conditions. M. javanica M. incognita race 3 M. arenaria race 1 Cultivar Rfy Host statusz Rf Host status Rf Host status Tomatox

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

research-article | 30-November-2019

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

variable and ranged from 0.32 to 15.50 for the control, 0.98 to 17.96 for those incubated in fluazaindolizine, and 0.94 to 8.04 for those incubated in oxamyl. Table 1. Average number of spores per juvenile of Meloidogyne javanica (M.j.) and M. incognita (M.i.) exposed to spores of Pasteuria penetrans (Pp blend) which had been previously incubated for 1, 7, and 21 days in the nematicides fluazaindolizine and oxamyl. Experiment 1 Experiment 2 Experiment 3 Treatments M.j. M.i. M.j

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

Journal of Nematology, Volume 52 , 1–7

Research Article | 03-December-2018

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

production (EM). Analysis of variance of data for RG and EM per root system identified seven genotypes with broad-based resistance to Meloidogyne javanica (Mj), avirulent (Avr-Mi), and virulent (Mi) M. incognita isolates. Two of the 48 genotypes exhibited specific resistance to both Mi isolates. Most of the genotypes were resistant to Avr-Mi indicating predominance of Rk gene in the collection. Based on RG data, both Mj (VI = 50%) and Mi (VI = 42%) were fourfold more virulent than Avr-Mi (VI = 12

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 | 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

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

expected, with scores for all RKN isolates greater than 3. Our data indicate that S. torvum rootstocks Hawk and Boğaç, are non-hosts for all RKN isolates tested. Also, for the first time, our data have shown that the two S. torvum rootstock cultivars were resistant to a Mi-1.2-virulent isolate of M. luci. Table 3. Number of egg masses and egg mass index of Meloidogyne incognita, Meloidogyne javanica, and Meloidogyne luci isolates on the Solanum torvum rootstock cvs. Hawk and Boğaç and the eggplant cv

Seren Sargın, Zübeyir Devran

Journal of Nematology, Volume 53 , 1–7

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