Synergy between an emerging monopartite begomovirus and a DNA-B component.

Autor: Ouattara A; Laboratoire de Virologie et de Biotechnologies Végétales, Institut de l'Environnement et de Recherches Agricoles (INERA), 01 BP 476, Ouagadougou 01, Burkina Faso.; CIRAD, UMR PVBMT, 97410, St Pierre, La Réunion, France.; Université de La Réunion, UMR PVBMT, 97410, Saint-Pierre, La Réunion, France.; Université Joseph Ki-Zerbo, 03 BP 7021, Ouagadougou 03, Burkina Faso.; Laboratoire Mixte International Patho-Bios, IRD-INERA, 01 BP 476, Ouagadougou 01, Burkina Faso., Tiendrébéogo F; Laboratoire de Virologie et de Biotechnologies Végétales, Institut de l'Environnement et de Recherches Agricoles (INERA), 01 BP 476, Ouagadougou 01, Burkina Faso.; Laboratoire Mixte International Patho-Bios, IRD-INERA, 01 BP 476, Ouagadougou 01, Burkina Faso., Becker N; UMR Institut de Systématique, Évolution, Biodiversité (ISYEB), Muséum National d'Histoire Naturelle, CNRS, Sorbonne Université, EPHE, Université des Antilles, 57 rue Cuvier, CP 50, 75005, Paris, France., Urbino C; CIRAD, UMR PHIM, 34090, Montpellier, France.; PHIM Plant Health Institute, INRAE, Univ Montpellier, CIRAD, Institut Agro, IRD, Montpellier, France., Thébaud G; PHIM Plant Health Institute, INRAE, Univ Montpellier, CIRAD, Institut Agro, IRD, Montpellier, France., Hoareau M; CIRAD, UMR PVBMT, 97410, St Pierre, La Réunion, France., Allibert A; CIRAD, UMR PVBMT, 97410, St Pierre, La Réunion, France., Chiroleu F; CIRAD, UMR PVBMT, 97410, St Pierre, La Réunion, France., Vernerey MS; PHIM Plant Health Institute, INRAE, Univ Montpellier, CIRAD, Institut Agro, IRD, Montpellier, France., Traoré EV; Laboratoire de Virologie et de Biotechnologies Végétales, Institut de l'Environnement et de Recherches Agricoles (INERA), 01 BP 476, Ouagadougou 01, Burkina Faso.; Laboratoire Mixte International Patho-Bios, IRD-INERA, 01 BP 476, Ouagadougou 01, Burkina Faso., Barro N; Université Joseph Ki-Zerbo, 03 BP 7021, Ouagadougou 03, Burkina Faso., Traoré O; Laboratoire de Virologie et de Biotechnologies Végétales, Institut de l'Environnement et de Recherches Agricoles (INERA), 01 BP 476, Ouagadougou 01, Burkina Faso.; Laboratoire National de Biosécurité (LNB), 06 BP 10798, Ouagadougou 06, Burkina Faso., Lefeuvre P; CIRAD, UMR PVBMT, 97410, St Pierre, La Réunion, France., Lett JM; CIRAD, UMR PVBMT, 97410, St Pierre, La Réunion, France. jean-michel.lett@cirad.fr.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2022 Jan 13; Vol. 12 (1), pp. 695. Date of Electronic Publication: 2022 Jan 13.
DOI: 10.1038/s41598-021-03957-7
Abstrakt: In recent decades, a legion of monopartite begomoviruses transmitted by the whitefly Bemisia tabaci has emerged as serious threats to vegetable crops in Africa. Recent studies in Burkina Faso (West Africa) reported the predominance of pepper yellow vein Mali virus (PepYVMLV) and its frequent association with a previously unknown DNA-B component. To understand the role of this DNA-B component in the emergence of PepYVMLV, we assessed biological traits related to virulence, virus accumulation, location in the tissue and transmission. We demonstrate that the DNA-B component is not required for systemic movement and symptom development of PepYVMLV (non-strict association), but that its association produces more severe symptoms including growth arrest and plant death. The increased virulence is associated with a higher viral DNA accumulation in plant tissues, an increase in the number of contaminated nuclei of the phloem parenchyma and in the transmission rate by B. tabaci. Our results suggest that the association of a DNA-B component with the otherwise monopartite PepYVMLV is a key factor of its emergence.
(© 2022. The Author(s).)
Databáze: MEDLINE
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