Abstract
Rice black-streaked dwarf virus (RBSDV) is the causal agent of rice black-streaked dwarf and maize rough dwarf diseases in China. The only open reading frame encoding the viral outer capsid protein on S10 RNA of 21 RBSDV isolates was sequenced for phylogenetic and recombination analysis. Four natural recombinants were detected, and the recombinant breakpoints were identified. In addition, the distribution of synonymous and non-synonymous nucleotide changes revealed that the virus had been evolving under purifying selection.
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