Evidence for Dicot Plants as Alternative Hosts of Banana Bunchy Top Virus and Its Alphasatellites in South-East Asia
2023
Guyot, Valentin | Ly, Ngoc-Sam | Trieu, Tien-Dung | Insisiengmay, Oudomphone | Zhang, Ting | Iskra-Caruana, Marie-Line | Pooggin, Mikhail, M | Plant Health Institute of Montpellier (UMR PHIM) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad)-Institut de Recherche pour le Développement (IRD)-Institut National de Recherche pour l’Agriculture, l’Alimentation et l’Environnement (INRAE)-Institut Agro Montpellier ; Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Université de Montpellier (UM) | Vietnam Academy of Science and Technology (VAST) | Northern Mountainous Agriculture and Forestry Science Institute (NOMAFSI) | Science and Innovation Research Institute [Vientiane] | Kunming Institute of Botany [CAS] (KIB) ; Chinese Academy of Sciences [Beijing] (CAS) | Direction Générale Déléguée à la Recherche et à la Stratégie (Cirad-Dgdrs) ; Centre de Coopération Internationale en Recherche Agronomique pour le Développement (Cirad) | INRAE department SPE project ViroMix funds | Institute Agro (Montpellier) PhD grant | Agropolis Foundation project BforBB funds | ANR-10-LABX-0001,AGRO,Agricultural Sciences for sustainable Development(2010)
International audience
Afficher plus [+] Moins [-]anglais. Banana bunchy top virus is a multicomponent circular ssDNA virus (family Nanoviridae) that causes one of the most devastating diseases of cultivated bananas and plantains (family Musaceae). It is transmitted by the aphids Pentalonia nigronervosa and P. caladii among host plants of Musaceae and some other families of monocots. Our Illumina sequencing reconstruction of virome components of BBTV-infected banana plants and their neighbor non-banana plants sampled in Vietnam and Laos revealed the monocot Commelina sp. (Commelinaceae) and the dicots Bidens pilosa and Chromolaena odorata (both Asteraceae) as hosts of BBTV and circular ssDNA alphasatellites (family Alphasatellitidae). Counting the proportions and relative abundances of Illumina reads representing BBTV genome components and alphasatellites suggested that Chromolaena and Commelina are poor hosts for BBTV and one to three alphasatellite species, whereas Bidens is a permissive host for BBTV and four alphasatellite species representing two genera of Alphasatellitidae. Our findings provide evidence for the dicot plants of family Asteraceae as alternative hosts of BBTV and its alphasatellites, which warrants further investigation of these and other dicots as a potential refuge and source of BBTV and multiple alphasatellites that become associated with this virus and likely affect its replication, transmission, and host range.
Afficher plus [+] Moins [-]Mots clés AGROVOC
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