Plant actin cytoskeleton remodeling by plant parasitic nematodes

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de Almeida-Engler, Janice | Rodiuc, Natalia | Smertenko, Andrei | Abad, Pierre

Edité par CCSD ; Taylor & Francis -

International audience. Cytoskeleton is an important component in the plant defense mechanisms against attacks of pathogenic organisms. Plants however, are defenseless against parasitic root-knot and cyst nematodes and respond to the invasion by the development of a special feeding site that supplies parasite with nutrients required for the completion of its lifecycle. Surprisingly, recent analysis of the nematode invasion under treatment with cytoskeletal drugs and in the mutant plants, where normal functions of the cytoskeleton have been affected, demonstrates importance of the cytoskeleton in the establishment of the feeding site and successful nematode reproduction. It appears that in case of microfilaments, nematode hijacks the intracellular machinery that regulates actin dynamics and modulates organization and properties of the actin filament network. Intervention with this process reduces the infection efficiency and inhibits parasite’s life cycle. This discovery uncovers a new pathway that can be exploited for the protection of plants against nematodes.

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