Tomato interveinal yellowing virus: a novel tomato-infecting monopartite begomovirus from Côte d’Ivoire

Ncho, Jocelin; Séka, Koutoua; Hoareau, Murielle; Konan, A.J.; Fondio, Lassina; Lefeuvre, Pierre; Martin, Thibaud; Coulibaly, Noupé Diakaria; Lett, Jean‐Michel

doi:10.1007/s00705-021-05019-9

Cited by 1 publication

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“…This could be explained by different phytosanitary practices and/or climatic and environmental conditions and would support our hypotheses listed above. In view of the predominance of MED ASL on most sites sampled in the major vegetable crops production areas, it might be suggested that this is the group mainly responsible for the spread of vegetable crops viruses in Côte d’Ivoire and the increased incidence of the disease that they cause [ 50 – 52 ].…”

Section: Discussionmentioning

confidence: 99%

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

N’cho

Séka²,

Assiri³

et al. 2022

PLoS ONE

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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.

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Section: Discussionmentioning

confidence: 99%