Genetic diversity and molecular evolution ofOrnithogalum mosaic virusbased on the coat protein gene sequence | Zendy

Fangluan Gao | Zendy; Zhenguo Du | Zendy; Jianguo Shen | Zendy; Hongkai Yang | Zendy; Furong Liao | Zendy

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Genetic diversity and molecular evolution ofOrnithogalum mosaic virusbased on the coat protein gene sequence

Author(s) -

Fangluan Gao,

Zhenguo Du,

Jianguo Shen,

Hongkai Yang,

Furong Liao

Publication year - 2018

Publication title -

peerj

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.927

H-Index - 70

ISSN - 2167-8359

DOI - 10.7717/peerj.4550

Subject(s) - biology , genetic diversity , genetic variation , host (biology) , analysis of molecular variance , clade , genetic divergence , evolutionary biology , molecular evolution , gene , genetics , phylogenetic tree , botany , genetic structure , population , demography , sociology

Ornithogalum mosaic virus (OrMV) has a wide host range and affects the production of a variety of ornamentals. In this study, the coat protein (CP) gene of OrMVwas used to investigate the molecular mechanisms underlying the evolution of this virus. The 36 OrMV isolates fell into two groups which have significant subpopulation differentiation with an F ST value of 0.470. One isolate was identified as a recombinant and the other 35 recombination-free isolates could be divided into two major clades under different evolutionary constraints with d N/ d S values of 0.055 and 0.028, respectively, indicating a role of purifying selection in the differentiation of OrMV. In addition, the results from analysis of molecular variance (AMOVA) indicated that the effect of host species on the genetic divergence of OrMV is greater than that of geography. Furthermore, OrMV isolates from the genera Ornithogalum, Lachenalia and Diuri tended to group together, indicating that OrMV diversification was maintained, in part, by host-driven adaptation.

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