Divergent evolutionary and epidemiological dynamics of cassava mosaic geminiviruses in Madagascar.

ABSTRACT:

Background

Cassava mosaic disease (CMD) in Madagascar is caused by a complex of at least six African cassava mosaic geminivirus (CMG) species. This provides a rare opportunity for a comparative study of the evolutionary and epidemiological dynamics of distinct pathogenic crop-infecting viral species that coexist within the same environment. The genetic and spatial structure of CMG populations in Madagascar was studied and Bayesian phylogeographic modelling was applied to infer the origins of Madagascan CMG populations within the epidemiological context of related populations situated on mainland Africa and other south western Indian Ocean (SWIO) islands.

Results

The isolation and analysis of 279 DNA-A and 117 DNA-B sequences revealed the presence in Madagascar of four preval

SUBMITTER: De Bruyn A 

PROVIDER: S-EPMC5012068 | biostudies-literature | 2016 Sep

REPOSITORIES: biostudies-literature