Root-Knot Nematodes: Meloidogyne Species and Races

Eisenback, J. D.; Triantaphyllou, Hedwig Hirschmann

doi:10.1201/9781003066576-6

Cited by 122 publications

(104 citation statements)

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“…The stylets of females and males were similar in length, but the population from the USA presented J2 with longer stylet. Some authors consider morphological features much more relevant in species characterization than morphometric characters (Jepson 1987;Eisenback and Triantaphyllou 1991). Considering these aspects, M. ottersoni populations collected in Brazil were very close to the described population from the USA and parasitize the same type host plant Phalaris arundinaceae, corroborating Koch's postulates.…”

Section: Discussionsupporting

confidence: 61%

“…The traditional identification methods of RKN are based on morphology (Jepson 1987;Eisenback and Triantaphyllou 1991;Hunt and Handoo 2009), esterase phenotypes (Esbenshade and Triantaphyllou 1985;Carneiro et al 2000) and molecular markers (Blok and Powers 2009). The identification of Meloidogyne spp.…”

Section: Discussionmentioning

confidence: 99%

“…Quantitative differences between species belonging to the Jepson group 11 are reduced, but M. ottersoni shows a small female stylet (9-12 μm), different from other species: M. graminicola, 12-14 μm and M. oryzae, 14-16 μm (Jepson 1987;Mattos et al 2018). The stylet knobs can also differentiate these three species: large transverse elongate knobs in M. graminicola (Eisenback and Triantaphyllou 1991), set off from the shaft in M. ottersoni and sloping backward in M. oryzae (Mattos et al 2018). However, considering the size of cone in relation to shaft, it is bigger in M. graminicola, smaller in M. oryzae and the same size or bigger in M. ottersoni (Jepson 1987;Eisenback and Triantaphyllou 1991;Mattos et al 2018).…”

Section: Diagnosis and Relationshipsmentioning

confidence: 99%

“…The stylet knobs can also differentiate these three species: large transverse elongate knobs in M. graminicola (Eisenback and Triantaphyllou 1991), set off from the shaft in M. ottersoni and sloping backward in M. oryzae (Mattos et al 2018). However, considering the size of cone in relation to shaft, it is bigger in M. graminicola, smaller in M. oryzae and the same size or bigger in M. ottersoni (Jepson 1987;Eisenback and Triantaphyllou 1991;Mattos et al 2018). The length range of male stylets is also different among the three species: 13-19 μm for M. ottersoni, 16-18 μm for M. graminicola and 18-20 μm for M. oryzae (Jepson 1987).…”

Section: Diagnosis and Relationshipsmentioning

confidence: 99%

See 3 more Smart Citations

Integrative taxonomy of Meloidogye ottersoni (Thorne, 1969) Franklin, 1971 (Nematoda: Meloidogynidae) parasitizing flooded rice in Brazil

et al. 2020

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HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de

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Section: Discussionsupporting

confidence: 61%

Section: Discussionmentioning

confidence: 99%

Section: Diagnosis and Relationshipsmentioning

confidence: 99%

Section: Diagnosis and Relationshipsmentioning

confidence: 99%

See 2 more Smart Citations

Integrative taxonomy of Meloidogye ottersoni (Thorne, 1969) Franklin, 1971 (Nematoda: Meloidogynidae) parasitizing flooded rice in Brazil

et al. 2020

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“…e works of Koenning et al [19] and Prot and Van Gundy [26] agreed with this report in that M. incognita is highly reproduced in soil that contains 72 to 91% sandy than in the soil that contains 30% of clay. M. incognita prefers a range of temperature between 25 and 30°C [27,28]. Zhao-hui et al [29] reported that the optimum temperature for the hatching of M. incognita egg was 15-30°C.…”

Section: Biology and Taxonomymentioning

confidence: 99%

Biology, Taxonomy, and Management of the Root-Knot Nematode (Meloidogyne incognita) in Sweet Potato

Wendimu

2021

Advances in Agriculture

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Sweet potato is the seventh-ranked food crop produced after wheat, rice, maize, potato, barley, and cassava in the world. It is the most important root tuber crop in temperate, subtropical, and tropical areas of the world. It is grown for food, income-generating, and jobs for farmers and retailers. The important nutritional substances of sweet potatoes are ß-carotene and anthocyanins. However, the production and its valuable products are limited due to root-knot nematode parasitism. One of the most important destructive species of root-knot nematode to this crop is Meloidogyne incognita. The most destructive stage to sweet potato is at its second juvenile stage (J2). At this stage, it invades the roots and tubers of sweet potato highly in warm sandy soil conditions. It is an obligate plant-parasitic nematode. M. incognita caused significant yield loss to sweet potato in terms of quality, quantity, disturbing the process of photosynthesis and nutrient uptake through the formation of galling, establishing of its feeding sites, or induced galls that contain giant-feeding cells, and cracking of tubers and roots directly. It also reduces the market values of the infected tuber of sweet potato by downgrading the production values. The problem of quality and quantity losses to sweet potato by this pest is one of the major problems nowadays. It caused this problem alone or interaction with other plant-parasitic pathogens or through synergistic of fungi, bacteria, viruses, and others. Therefore, this review paper is focused on the sweet potato M. incognita biology, taxonomy, geographical distribution, and management measures.

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Observations on the interaction between plant growth‐promoting bacteria and the root‐knot nematode Meloidogyne javanica

Egan

Kakouli‐Duarte

2022

MicrobiologyOpen

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Pseudomonas fluorescens , strains L124, L228, L321, and the positive control strain F113 used in this study, produce compounds associated with plant growth promotion, biocontrol, antimicrobial and antiviral activity, and adaptation to stresses. These bacterial strains were tested in vitro and in vivo in tomato plants, to determine their potential role in Meloidogyne javanica suppression. In laboratory experiments, only 2% of M. javanica eggs hatched when exposed to the metabolites of each bacterial strain. Additionally, 100% M. javanica J2 mortality was recorded when nematodes were exposed to the metabolites of F113 and L228. In greenhouse experiments, M. javanica infected tomato plants, which were also inoculated with the bacterial strains F113 and L124, displayed the highest biomass (height, number of leaves, fresh and dry weight) of all bacterial treatments tested. Results from the development and induced systemic resistance experiments indicated that the bacterial strains F113 and L321 had the most effective biocontrol capacity over nematode infection, delayed nematode development (J3/J4, adults and galls), and reduced nematode fecundity. In addition, these results indicated that the bacterial strain L124 is an effective plant growth promoter of tomato plants. Furthermore, it was determined that the bacterial strain L321 was capable of M. javanica biocontrol. P. fluorescens F113 was effective at both increasing tomato plant biomass and M. javanica biocontrol. In an agricultural context, applying successional drenches with these beneficial plant growth promoting rhizobacteria would ensure bacteria viability in the rhizosphere of the plants, encourage positive plant bacterial interactions and increase biocontrol against M. javanica .

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Root-Knot Nematodes: Meloidogyne Species and Races

Cited by 122 publications

References 1 publication

Integrative taxonomy of Meloidogye ottersoni (Thorne, 1969) Franklin, 1971 (Nematoda: Meloidogynidae) parasitizing flooded rice in Brazil

Integrative taxonomy of Meloidogye ottersoni (Thorne, 1969) Franklin, 1971 (Nematoda: Meloidogynidae) parasitizing flooded rice in Brazil

Biology, Taxonomy, and Management of the Root-Knot Nematode (Meloidogyne incognita) in Sweet Potato

Observations on the interaction between plant growth‐promoting bacteria and the root‐knot nematode Meloidogyne javanica

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