Evidence for dicot plants as alternative hosts of banana bunchy Top virus and its alphasatellites in South-East Asia

Guyot Valentin, Ly Ngoc-Sam, Trieu Tien Dung, Insisiengmay Oudomphone, Zhang Ting, Caruana Marie-Line, Pooggin Mikhail. 2023. Evidence for dicot plants as alternative hosts of banana bunchy Top virus and its alphasatellites in South-East Asia. Pathogens, 12 (11), n.spéc. Plant Virus Genome Diversity in Plant Hosts and Insect Vectors:1289, 8 p.

https://doi.org/10.3390/pathogens12111289

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Url - jeu de données - Entrepôt autre : https://www.ncbi.nlm.nih.gov/nuccore/ON959832 / Url - jeu de données - Entrepôt autre : https://www.ncbi.nlm.nih.gov/nuccore/ON959993 / Url - jeu de données - Entrepôt autre : https://www.ncbi.nlm.nih.gov/nuccore/ON960035

Résumé : 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.

Mots-clés Agrovoc : virus bunchy top bananier, virus des végétaux, Musa, Musa acuminata, Musaceae, Chromolaena odorata, Musa (plantains), Enquête pathologique, virus ADNsb, Arachis hypogaea, Commelina, Musa balbisiana, Musa (bananes), Colocasia esculenta

Mots-clés géographiques Agrovoc : République démocratique populaire lao

Mots-clés libres : Banana bunchy top virus, Alphasatellite, Host range, Musa, Commelina, Chromolaena, Bidens

Classification Agris : H20 - Maladies des plantes
H01 - Protection des végétaux - Considérations générales

Champ stratégique Cirad : CTS 4 (2019-) - Santé des plantes, des animaux et des écosystèmes

Agences de financement hors UE : Agence Nationale de la Recherche, Agropolis Fondation, Institut National de Recherche pour l'Agriculture, l'Alimentation et l'Environnement

Projets sur financement : (FRA) Agricultural Sciences for sustainable Development, (FRA) ViroMix

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