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

被引：8

作者：

Wu, Guan-Wei ^{[1
,2
]}

Tang, Min ^{[2
]}

Wang, Guo-Ping ^{[1
,2
]}

Jin, Feng-Yin ^{[2
]}

Yang, Zuo-Kun ^{[2
]}

Cheng, Li-Jing ^{[2
]}

Hong, Ni ^{[1
,2
]}

机构：

[1] Huazhong Agr Univ, Natl Key Lab Agromicrobiol, Wuhan 430070, Hubei, Peoples R China

[2] Huazhong Agr Univ, Coll Plant Sci & Technol, Key Lab Crop Dis Monitoring & Safety Control Hube, Wuhan 430070, Hubei, Peoples R China

来源：

ARCHIVES OF VIROLOGY | 2015年 / 160卷 / 03期

基金：

中国国家自然科学基金;

关键词：

MIXED INFECTIONS; COAT PROTEIN; RECOMBINATION; APHID; RESTRICTION; GENOTYPES; SEQUENCE; DYNAMICS; VIRION;

D O I：

10.1007/s00705-014-2281-2

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

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.

引用

页码：787 / 794

页数：8

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