The role of cuticular proteins located at the surface of the acrostyle, an organ at the tip of aphid stylets, in plant-aphid interactions - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Accéder directement au contenu
Communication Dans Un Congrès Année : 2017

The role of cuticular proteins located at the surface of the acrostyle, an organ at the tip of aphid stylets, in plant-aphid interactions

Résumé

Aphids are among the most devastating sap-feeding insects on crops. They feed from sieve tubes using specialized piercing-sucking mouthparts, called stylets. Stylets are made of cuticle, composed mainly of cuticular proteins and chitin. To collect nutrients essential for growth, development and reproduction, aphids have evolved sophisticated mechanisms to overcome plant defenses. Such defenses are triggered by the mechanical injury of penetrating stylets and by the release of elicitor molecules secreted in the aphid saliva. In compatible interactions, aphid effectors are able to counteract these plant defenses, leading to sustained insect feeding. The acrostyle is an organ located over the inner side of the tip of maxillary stylets. This organ is in contact with both plant cell content, plant sap and aphid saliva, and may have a key role in aphid-plant interactions during the feeding process. The proteins of the acrostyle are emerging from the cuticule at the stylet/fluid interface, thus able to interact with proteins (at least transiently) originating either from the ingested plant sap or from the egested saliva. In an attempt to define the physiological functions of the acrostyle, the main goal will be to search for interacting partners of the cuticular proteins at the surface of the organ within plant (defense molecules) and aphid saliva (effectors). Cuticular proteins with surface-exposed peptides have been recently identified. Several approaches are now developed to find their putative partners. Preliminary data showing an interaction between a cuticular protein and an effector will be presented.
Fichier non déposé

Dates et versions

hal-02789040 , version 1 (05-06-2020)

Identifiants

  • HAL Id : hal-02789040 , version 1
  • PRODINRA : 417679

Citer

Maelle Deshoux, Baptiste Monsion, Craig Webster, Victor Masson, Karim Arafah, et al.. The role of cuticular proteins located at the surface of the acrostyle, an organ at the tip of aphid stylets, in plant-aphid interactions. European PhD network “Insect science” annual meeting, Nov 2017, Napoli, Italy. ⟨hal-02789040⟩
18 Consultations
0 Téléchargements

Partager

Gmail Facebook X LinkedIn More