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Menu Institut Sophia Agrobiotech Inra - 70 ans - Votre avenir est notre culture Univ. Nice Sophia Antipolis CNRS

Institut Sophia Agrobiotech

Institut Sophia Agrobiotech

Institut Sophia Agrobiotech

UMR INRA - Univ. Nice Sophia Antipolis - Cnrs
400 route des chappes
BP 167
0690 Sophia Antipolis Cedex
Tel. : +33(0)4 92 38 64 00
Fax : + 33(0)4 92 38 64 01


Aphid facultative symbiont affects induced plant defenses

Mardi 1er mars 2016 - Sophia Antipolis - Inra PACA - Salle URIH

Séminaire scientifique
Dans le cadre de l'animation scientifique de l'Institut Sophia Agrobiotech, les équipes BPI et RDLB invitent Enric Frago, CIRAD de la Réunion : "Aphid facultative symbiont affects induced plant defenses"


It has long been known that insects are colonised by a diverse community of mutualistic symbionts that provide their hosts with nutrients that are missing in the diet. In the last decade, it has become apparent that facultative symbionts (i.e. not required for host survival) in herbivore insects can also play an important role in insect-plant interactions. When attacked by insects, plants are able to defend themselves by triggering defensive mechanisms aimed at poisoning the herbivore or to attract herbivore natural enemies. Recent research demonstrates that facultative insect symbionts can play an important role in this context, for example by down-regulating the expression of plant defensive traits. We explore the role of pea aphid (Acyrthosiphon pisum) facultative endosymbionts in plant defences. Our results suggest that insect symbionts can have intricate effects on aphid natural enemies, some of them mediated by changes in plant quality.