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Archives of Virology
Published in: Archives of Virology 3/2015

01-03-2015 | Brief Report

Genetic diversity and evolution of two capsid protein genes of citrus tristeza virus isolates from China

Authors: Guan-Wei Wu, Min Tang, Guo-Ping Wang, Feng-Yin Jin, Zuo-Kun Yang, Li-Jing Cheng, Ni Hong

Published in: Archives of Virology | Issue 3/2015

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Abstract

The genetic diversity and population structure of citrus tristeza virus (CTV) isolates from China were investigated based on partial sequences spanning the C-terminal end of p61 and the complete sequences of the CPm and CP genes. Phylogenetic analysis revealed five known groups (RB, T30, T36, HA and VT) and one new group (VI) consisting of only Chinese CTV isolates. Incongruent phylogenetic trees coupled with recombination analysis suggested several recombination events in the CPm gene. Positive selection was detected at codon 9 of CPm and codons 31, 41 and 68 of CP. The widespread CTV subpopulation AT-1 found in China has a unique amino acid insertion at the C-terminus of p61, which could increase CTV population complexity with implications for the evolutionary history of the virus. Our results suggest relevant roles for gene flow, purifying selection and recombination in shaping the CTV population in China.
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Metadata
Title
Genetic diversity and evolution of two capsid protein genes of citrus tristeza virus isolates from China
Authors
Guan-Wei Wu
Min Tang
Guo-Ping Wang
Feng-Yin Jin
Zuo-Kun Yang
Li-Jing Cheng
Ni Hong
Publication date
01-03-2015
Publisher
Springer Vienna
Published in
Archives of Virology / Issue 3/2015
Print ISSN: 0304-8608
Electronic ISSN: 1432-8798
DOI
https://doi.org/10.1007/s00705-014-2281-2

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