Molecular diversity of yam virus Y and identification of banana mild mosaic virus isolates infecting yam (Dioscorea spp.).

Autor: Diouf MB; INRAE, UR ASTRO, 97170, Petit‑Bourg, Guadeloupe, France.; CIRAD, UMR AGAP Institut, 97130, Capesterre Belle Eau, France.; UMR AGAP Institut, Univ Montpellier, CIRAD, INRAE, Institut Agro, 97130, Capesterre Belle Eau, France., Guyader S; INRAE, UR ASTRO, 97170, Petit‑Bourg, Guadeloupe, France., Nopoly MM; INRAE, UR ASTRO, 97170, Petit‑Bourg, Guadeloupe, France., Gaspard O; INRAE, UR ASTRO, 97170, Petit‑Bourg, Guadeloupe, France., Filloux D; CIRAD, UMR PHIM, 34090, Montpellier, France.; PHIM Plant Health Institute, Univ Montpellier, CIRAD, INRAE, Institut Agro, IRD, 34090, Montpellier, France., Candresse T; INRAE, Univ. Bordeaux, UMR BFP, CS20032, 33882, Villenave d'Ornon Cedex, France., Marais A; INRAE, Univ. Bordeaux, UMR BFP, CS20032, 33882, Villenave d'Ornon Cedex, France., Teycheney PY; CIRAD, UMR PVBMT, 97410, Saint-Pierre, La Réunion, France.; UMR PVBMT, Université de la Réunion, 97410, Saint-Pierre, La Réunion, France., Umber M; INRAE, UR ASTRO, 97170, Petit‑Bourg, Guadeloupe, France. marie.umber@inrae.fr.
Jazyk: angličtina
Zdroj: Archives of virology [Arch Virol] 2023 Jun 13; Vol. 168 (7), pp. 180. Date of Electronic Publication: 2023 Jun 13.
DOI: 10.1007/s00705-023-05809-3
Abstrakt: Two members of the family Betaflexiviridae associated with yam (Dioscorea spp.) have been described so far: yam latent virus (YLV) and yam virus Y (YVY). However, their geographical distribution and molecular diversity remain poorly documented. Using a nested RT-PCR assay, we detected YVY in D. alata, D. bulbifera, D. cayenensis, D. rotundata, and D. trifida in Guadeloupe, and in D. rotundata in Côte d'Ivoire, thus extending the known host range of this virus and geographical distribution. Using amplicon sequencing, we determined that the molecular diversity of YVY in the yam samples analyzed in this work ranged between 0.0 and 29.1% and that this diversity is partially geographically structured. We also identified three isolates of banana mild mosaic virus (BanMMV) infecting D. alata in Guadeloupe, providing the first evidence for BanMMV infection in yam.
(© 2023. The Author(s).)
Databáze: MEDLINE
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