Inferring the evolutionary history of rice yellow mottle virus from genomic, phylogenetic, and phylogeographic studies.

ABSTRACT: Fourteen isolates of Rice yellow mottle virus (RYMV) were selected as representative of the genetic variability of the virus in Africa from a total set of 320 isolates serologically typed or partially sequenced. The 14 isolates were fully sequenced and analyzed together with two previously reported sequences. RYMV had a genomic organization similar to that of Cocksfoot mottle sobemovirus. The average nucleotide diversity among the 16 isolates of RYMV was 7%, and the maximum diversity between any two isolates was 10%. A strong conservative selection was apparent on both synonymous and nonsynonymous substitutions, through the amino acid replacement pattern, on the genome size, and through the limited number of indel events. Furthermore, there was a lack of positive selection on single amino

SUBMITTER: Fargette D 

PROVIDER: S-EPMC371063 | biostudies-literature | 2004 Apr

REPOSITORIES: biostudies-literature