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« Biology and evolution of plant RNA viruses »

Axis 1 : To study the molecular mechanisms of virus transmission by aphids
	Studies of interactions between PAV species of Barley Yellow Dwarf Virus (BYDV-PAV), host plant and vector: analysis of molecular bases of aphid persistent transmission (E. Jacquot) Molecular mechanims of PLRV transmission by aphids (D. Giblot Ducray)
Axis 2 : To study the variability and the adaptive potential of RNA phytoviruses
	Studies of interactions between PAV species of Barley Yellow Dwarf Virus (BYDV-PAV), host plant and vector: Study of BYDV evolution process in susceptible and resistant hosts (E. Jacquot) Variability and evolution of PLRV (D. Giblot Ducray) Potato virus Y : molecular determinants responsible of pathogenic properties and evolution of the virus (C. Kerlan)
Axis 3 : To develop tools to detect and characterise viral populations
	Studies of interactions between PAV species of Barley Yellow Dwarf Virus (BYDV-PAV), host plant and vector: Set up of detection/characterisation tools for viral population studies (E. Jacquot) Variability and detection of Potato virus Y (PVY) (C. Kerlan) Tobacco rattle virus (TRV) : a long time damaging pathogen in potato crops requiring a control strategy based on breeding for resistance (C. Kerlan)