Root-knot nematode parasitism and host response: molecular
basis of a sophisticated interaction
Pierre Abad, Bruno Favery, Marie-Noëlle Rosso and Philippe
Castagnone-Sereno
INRA, Unité Interactions Plantes-Microorganismes et Santé Végétale,
123 Bd. Francis Meilland, BP2078, 06606 Antibes Cedex, France
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| Taxonomy: |
Eukaryota; Metazoa; Nematoda;
Chromadorea; order Tylenchida; Tylenchoidea; Heteroderidae; genus
Meloidogyne. |
| Physical Properties: |
Microscopic-non-segmented worms. Meloidogyne
species can reproduce by apomixis, facultative meiotic parthenogenesis or
obligate mitotic parthenogenesis. Obligate biotrophic parasites inducing
the re-differentiation of plant cells into specialized feeding cells. |
| Hosts: |
Meloidogyne spp. can infest
more than 3000 plant species including vegetables, fruit trees, cereals
and ornamental flowers. |
| Disease Symptoms: |
Root swellings called galls.
Alteration of the root vascular system. |
| Disease control: |
Cultural control, chemical control,
resistant cultivars. |
| Agronomic importance: |
Major threat to agriculture in
temperate and tropical regions. |
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Fig. 1 Symptoms of Meloidogyne incognita attack on Ficus
roots.
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