First report of cassava mosaic geminiviruses and the Uganda strain of <i>East African cassava mosaic virus</i> (EACMV‐UG) associated with cassava mosaic disease in Equatorial Guinea

Valam-Zango, A.; Zinga, Innocent; Hoareau, Murielle; Tocko-Marabena, B.K.; Mvila, A.C.; Semballa, Silla; Lett, Jean‐Michel

doi:10.5197/j.2044-0588.2015.032.029

Cited by 5 publications

(1 citation statement)

References 7 publications

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“…EACMV-UG was still absent from areas bordering northern Gabon when the virus was first reported in Cameroon in 2010 near the border with the Central African Republic 39 . In 2015, however, EACMV-UG was detected in all four villages surveyed, with the highest prevalence (8%) in villages bordering Cameroon (MGB, MIS, MVL) and the lowest (2%) in Cocobeach (CCB), near the border with Equatorial Guinea where the virus had just been reported 40 .…”

Section: Discussionmentioning

confidence: 96%

Kinship networks of seed exchange shape spatial patterns of plant virus diversity

et al. 2021

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By structuring farmers’ informal networks of seed exchange, kinship systems play a key role in the dynamics of crop genetic diversity in smallholder farming systems. However, because many crop diseases are propagated through infected germplasm, local seed systems can also facilitate the dissemination of seedborne pathogens. Here, we investigate how the interplay of kinship systems and local networks of germplasm exchange influences the metapopulation dynamics of viruses responsible for the cassava mosaic disease (CMD), a major threat to food security in Africa. Combining anthropological, genetic and plant epidemiological data, we analyzed the genetic structure of local populations of the African cassava mosaic virus (ACMV), one of the main causal agents of CMD. Results reveal contrasted patterns of viral diversity in patrilineal and matrilineal communities, consistent with local modes of seed exchange. Our results demonstrate that plant virus ecosystems have also a cultural component and that social factors that shape regional seed exchange networks influence the genetic structure of plant virus populations.

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Section: Discussionmentioning

confidence: 96%