Compatible plant-aphid interactions: how aphids manipulate plant responses

Philippe Giordanengo, Laurence Brunissen, Christine Rusterucci, Charles Vincent, Aart van Bel, Sylvie Dinant, Christine Girousse, Mireille Faucher, Jean-Louis Bonnemain
Comptes Rendus Biologies 2010, 333 (6-7): 516-23
To access phloem sap, aphids have developed a furtive strategy, their stylets progressing towards sieve tubes mainly through the apoplasmic compartment. Aphid feeding requires that they overcome a number of plant responses, ranging from sieve tube occlusion and activation of phytohormone-signalling pathways to expression of anti-insect molecules. In addition to bypassing plant defences, aphids have been shown to affect plant primary metabolism, which could be a strategy to improve phloem sap composition in nutrients required for their growth. During compatible interactions, leading to successful feeding and reproduction, aphids cause alterations in their host plant, including morphological changes, modified resource allocation and various local as well as systemic symptoms. Repeated salivary secretions injected from the first probe in the epidermal tissue up to ingestion of sieve-tube sap may play a crucial role in the compatibility between the aphid and the plant.

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