Report of the Panel on Insect-Parasitic, Free-Living Terrestrial, and Free-Living Aquatic Nematodes

Fortuner, Renaud

doi:10.1007/978-1-4684-9016-9_27

Cited by 3 publications

(6 citation statements)

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“…In this study, we showed that the basmati rice cultivar PB1121 is equally vulnerable to M. graminicola and M. incognita. In African countries including Kenya, Egypt, Nigeria and Ivory Coast, M. incognita caused serious damage to rice in upland cultivation systems (Babatola, 1980;Diomandé, 1984;Fortuner & Merny, 1979;Namu et al, 2019).…”

Section: Discussionmentioning

confidence: 99%

“…Conversely, investigation into the damaging potential of another root-knot nematode, M. incognita, in rice is as yet an underexplored area. A few isolated studies reported the significant damage of M. incognita to upland rice in different African countries, including Kenya, Egypt, Nigeria and Ivory Coast (Babatola, 1980;Diomandé, 1984;Fortuner & Merny, 1979;Namu et al, 2019). Using histopathological analysis, Nguyễn et al (2014) showed that rice can serve as an excellent susceptible host for M. incognita infection.…”

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confidence: 99%

“…Using histopathological analysis, Nguyễn et al (2014) showed that rice can serve as an excellent susceptible host for M. incognita infection. Nevertheless, the damaging impact of M. incognita on rice was argued, especially because of its susceptibility to flooding conditions (Bridge et al, 2005;Fortuner & Merny, 1979). It is worth mentioning that aerobic rice production systems can potentially become vulnerable to this nematode if prophylactic measures are not taken.…”

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confidence: 99%

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The relative infection potential of Meloidogyne incognita and M. graminicola in the basmati rice cultivar PB1121

Dutta,

Akhil

2023

Plant Pathology

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Root‐knot nematodes, Meloidogyne spp., are considered one of the major biotic constraints for global rice production. Although the role of Meloidogyne graminicola in root‐knot disease progression is well investigated, negligible research has been performed to understand the damaging potential of M. incognita in rice. In this study, the comparative infection biology of M. incognita and M. graminicola was investigated in the basmati rice cultivar PB1121 growing in Pluronic gel medium and soil. Intriguingly, M. incognita laid eggs outside the galled root, whereas M. graminicola egg masses were deposited inside the galled root. This differential egg‐laying pattern can be correlated with their specific adaptations in irrigated and upland rice production systems. Although M. incognita induced a greater number of galls than M. graminicola, M. graminicola gall sizes were comparatively larger than those of M. incognita. The greater reproductive success of M. graminicola than M. incognita did not cause any difference in their yield reduction potential in PB1121. PB1121 was equally vulnerable to M. incognita and M. graminicola in terms of reduction in plant height, tiller numbers per plant and grain yield per plant. Our research suggests that M. incognita also causes economic damage to rice, and nematode management tactics must consider the damaging potential of both nematode species.

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Section: Discussionmentioning

confidence: 99%

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confidence: 99%

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confidence: 99%

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The relative infection potential of Meloidogyne incognita and M. graminicola in the basmati rice cultivar PB1121

Dutta,

Akhil

2023

Plant Pathology

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“…Prasad and his co-workers (2008b) hypothesized that switching to SRI might result in a gradual decline in populations of rice root nematode species, which prefer irrigated systems, and an increase in populations of more pathogenic species such as root knot and lesion nematodes, which prefer upland and aerobic environments. Fortuner and Merny (1979) reported that M. graminicola is found in irrigated paddy fields, but this relationship is doubtful as this nematode is known to be very susceptible to flooding, and is most probably associated with plants growing when the field is free of water as in upland rice. M. graminicola is well adapted to irrigated conditions and shallow flooding does not affect its reproduction (Prot and Matias, 1995).…”

Section: Seasonal Fluctuation Of Saprozoic Nematode Population Betwee...mentioning

confidence: 99%

Prevalence Of Nematode Population In Two Different Rice Cultivation Systems And Its Impact On Crop Growth

Rathod,

Sarkar,

Hore

et al. 2023

SFS

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An experiment was carried out to study the prevalence of nematode population in two different cultivation systems (SRI and conventional) on rice cv. IET- 4094 (Khitish). Total twenty-eight plots were laid out in paired plot technique. Irrespective of rice cultivation systems, there had been a steady hike in population of Meloidogyne graminicola and Tylenchorhynchus mashhoodi with the maximum being recorded near harvest and a sudden fall during fallow period was observed. The study indicated that SRI cultivation provided comparatively more favourable ecological condition for steady buildup of M. graminicola and T. mashhoodi population than conventional system. Between two systems, SRI method encountered comparatively more population of Hoplolaimus indicus. The spiral nematode, Helicotylenchus dihystera was also found associated with the rice crop but statistical analysis did not reveal any stable result to come into conclusion about their ecological preference. The study revealed that continuous submergence of rice field as in conventional system was detrimental to growth and reproduction of R. reniformis. The rice crop grown under SRI method acquired more vigorous growth as compared to conventional system. Profuse root and shoot growth as evidenced by root length, root biomass yield and straw yield in SRI might have limit the yield reduction in spite of huge infestation of nematodes.

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“…They may survive for several weeks in roots (Ichinohe, 1988) or in soil (Bridge et al, 2005). Survival in roots is better than in soil except when the soil is dry (Fortuner and Merny, 1979). Weeds are also important as alternative hosts (Bridge et al, 2005).…”

Section: Identity and Taxonomymentioning

confidence: 99%

Pest categorisation of Hirschmanniella spp.

Jeger¹,

Bragard²,

Caffier³

et al. 2018

EFS2

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The Panel on Plant Health performed a pest categorisation of nematodes belonging to the genus Hirschmanniella (Nematoda: Pratylenchidae). Twenty‐nine species in this genus have been considered of which five species are present in the EU (Hirschmanniella behningi, Hirschmanniella gracilis, Hirschmanniella halophila, Hirschmanniella loofi and Hirschmanniella zostericola). The whole genus except H. gracilis is regulated by Council Directive 2000/29/EC (Annex IAI). Hirschmanniella species are root endoparasites uniquely adapted to aquatic environments. Most species are reported from tropical regions. Monocotyledons including aquatic plants are main hosts and some Hirschmanniella species are important pests of rice. Plants for planting are potential pathways for entry. Hirschmanniella species are frequently intercepted on imported aquarium plants. Measures are available to avoid entry. Environmental conditions in greenhouses and potentially in rice production areas of the EU are suitable for establishment. The nematode may be spread with irrigation, tools or plants for planting. Hirschmanniella species were categorised into four groups. The first group includes species reported as pests of crop plants; those satisfy all the criteria that are within the remit of EFSA to assess to be regarded as Union quarantine pests. The second group includes species that are not reported to cause economic damage to crop plants; those species do not satisfy all the criteria to be regarded as Union quarantine pests. Uncertainty exists whether species in this group can cause damage once introduced into the EU. The third group includes species that are known to be present in the EU and do not cause damage; they do not satisfy the criteria to be regarded as Union quarantine pests or regulated non‐quarantine pests. The fourth group consists of H. gracilis only. This worldwide occurring species is present in the EU where it does not cause economic damage. It does not satisfy all the criteria to be regarded as a Union quarantine pest.

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Report of the Panel on Insect-Parasitic, Free-Living Terrestrial, and Free-Living Aquatic Nematodes

Cited by 3 publications

References 0 publications

The relative infection potential of Meloidogyne incognita and M. graminicola in the basmati rice cultivar PB1121

The relative infection potential of Meloidogyne incognita and M. graminicola in the basmati rice cultivar PB1121

Prevalence Of Nematode Population In Two Different Rice Cultivation Systems And Its Impact On Crop Growth

Pest categorisation of Hirschmanniella spp.

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