Genetic diversity of whitefly species of the Bemisia tabaci Gennadius (Hemiptera: Aleyrodidae) species complex, associated with vegetable crops in Côte d'Ivoire.

Autor: N'cho AJ; Cirad, UMR PVBMT, Saint-Pierre, La Réunion, France.; Nangui Abrogoua University, Abidjan, Côte d'Ivoire.; National Center for Agricultural Research (CNRA), Bouaké, Côte d'Ivoire.; University of Montpellier, Cirad, UR Hortsys, Montpellier, France., Seka K; Nangui Abrogoua University, Abidjan, Côte d'Ivoire., Assiri KP; Nangui Abrogoua University, Abidjan, Côte d'Ivoire., Simiand C; Cirad, UMR PVBMT, Saint-Pierre, La Réunion, France., Otron DH; Cirad, UMR PVBMT, Saint-Pierre, La Réunion, France., Ochou G; National Center for Agricultural Research (CNRA), Bouaké, Côte d'Ivoire., Konan KAJ; National Center for Agricultural Research (CNRA), Bouaké, Côte d'Ivoire.; Felix Houphouet Boigny University of Cocody, Abidjan, Côte d'Ivoire., Kouadio MF; National Center for Agricultural Research (CNRA), Bouaké, Côte d'Ivoire.; Felix Houphouet Boigny University of Cocody, Abidjan, Côte d'Ivoire., Fondio L; National Center for Agricultural Research (CNRA), Bouaké, Côte d'Ivoire., Atta Diallo H; Nangui Abrogoua University, Abidjan, Côte d'Ivoire., Martin T; University of Montpellier, Cirad, UR Hortsys, Montpellier, France.; Felix Houphouet Boigny University of Cocody, Abidjan, Côte d'Ivoire., Delatte H; Cirad, UMR PVBMT, Antananarivo, Madagascar.
Jazyk: angličtina
Zdroj: PloS one [PLoS One] 2022 Oct 31; Vol. 17 (10), pp. e0276993. Date of Electronic Publication: 2022 Oct 31 (Print Publication: 2022).
DOI: 10.1371/journal.pone.0276993
Abstrakt: Since several years, whiteflies of the species complex of Bemisia tabaci (Gennadius) are causing several damages on vegetable crops in Côte d'Ivoire. These sap-sucking insects are the main vector of many viruses on tomato and several species of this complex have developed resistances against insecticides. Nevertheless, there is very little information about whitefly species on vegetable crops in Côte d'Ivoire. Here, we investigated the species diversity and their genetic diversity and structuring on samples from vegetable crops in the major tomato production areas of Côte d'Ivoire. To assess this diversity, 535 whitefly samples from different localities and plant species were collected and analysed with nuclear (microsatellite) and mitochondrial (mtCOI) markers. In each site, and ecological data were recorded, including whiteflies abundance and plant species colonised by B. tabaci. The analysis of mtCOI sequences of whiteflies indicated the presence of four cryptic species on tomato and associated crops in Côte d'Ivoire. These were MED ASL, MED Q1, SSA 1 and SSA3. The MED ASL species dominated over all samples in the different regions and plant species. One haplotype of MED ASL out of the 15 identified predominated on most plant species and most sites. These results suggested that MED ASL is probably the main phytovirus vector in the Ivorian vegetable cropping areas. In contrast, only five haplotypes of MED Q1 were identified on vegetables but in the cotton-growing areas of the country. Its low prevalence, low nuclear and mitochondrial diversity might indicate a recent invasion of this species on vegetable crops in Côte d'Ivoire. The Bayesian nuclear analysis indicated the presence of hybrid genotypes between the two main species MED ASL and MED Q1, however in low prevalence (10%). All these results highlight the need to maintain whitefly populations monitoring for a more effective management in Côte d'Ivoire.
Competing Interests: The authors have declared that no competing interests exist.
Databáze: MEDLINE
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