Genomic and transcriptomic advances in understanding the tripartite interactions between host plants, viruses and the protist vectors Polymyxa
(2023) ECOP-ISOP — Location: Vienne, Autriche (9.July.2023)
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- Abstract
- Polymyxa spp. are root obligate endoparasite protists classified among the Plasmodiophorids. These protists are studied in agronomy as they transmit a diversity of viruses (29 viruses reported so far) to numerous host plants (monocotyledons and dicotyledons) in both temperate and tropical areas. Our research aims to assess how the host plants, the protists Polymyxa and the viruses they vector interact, mainly focusing on two pathosystem models for which genomic data are available : (1) the Polymyxa betae – Beet necrotic yellow vein virus (BNYVV) on sugar beet and (2) the Polymyxa graminis – Rice stripe necrosis virus (RSNV) on rice. Many questions remain so far regarding the nature and the specificity of host-Polymyxa and Polymyxa-virus interactions. This work aims to present the results of recent genomic (Decroës et al., 2022a) and transcriptomic (Decroës et al., 2022b) data of the vector Polymyxa. The study of the distinct effects of Polymyxa alone or associated with a virus on its host opens new opportunities to understand how Polymyxa manage to by-pass host defenses and paves the way for identifying effectors involved in host defenses manipulation. It also gives insight on how does the virus impact Polymyxa and its interactions with its host and the specificity of Polymyxa-virus interactions.
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Genard, M., Decroes, A., Bragard, C., & Legrève, A. (2023). Genomic and transcriptomic advances in understanding the tripartite interactions between host plants, viruses and the protist vectors Polymyxa. ECOP-ISOP, Vienne, Autriche.