Compatible plant-aphid interactions: how aphids manipulate plant responses.
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.
Giordanengo
Philippe
P
Plant Biology and Insect Pest Control (EA 3900), université de Picardie Jules-Verne, Amiens cedex, France. philippe.giordanengo@u-picardie.fr
Brunissen
Laurence
L
Rusterucci
Christine
C
Vincent
Charles
C
van Bel
Aart
A
Dinant
Sylvie
S
Girousse
Christine
C
Faucher
Mireille
M
Bonnemain
Jean-Louis
JL
D000818:Animals; D001042:Aphids / Q000502:physiology*; D006790:Host-Parasite Interactions / Q000502:physiology*; D063245:Plant Development; D018521:Plant Physiological Phenomena; D010944:Plants / Q000033:anatomy & histology; D012463:Saliva / Q000737:chemistry