Phylogenetic Analysis of Citrus tristeza virus Isolates of Wild Type Citrus in China
文献类型: 外文期刊
第一作者: Yi Long
作者: Yi Long;Zhou Chang-yong;Yi Long
作者机构:
关键词: Citrus tristeza virus;wild type citrus;genetic diversity;phylogenetic analysis
期刊名称:JOURNAL OF INTEGRATIVE AGRICULTURE ( 影响因子:2.848; 五年影响因子:2.979 )
ISSN: 2095-3119
年卷期: 2014 年 13 卷 12 期
页码:
收录情况: SCI
摘要: The genetic variation and phylogenetic relationships of Citrus tristeza virus (CTV) isolates collected from Chinese wild type citrus were analyzed by comparing the sequences of nine genomic regions (p23, p20, p13, p18, p25, p27, POL, HEL and k17) with the CTV isolates of cultivated citrus from different countries. The results showed that the divergence pattern of genomic RNA of the CTV isolates from wild type citrus was similar to that of other isolates from cultivated citrus, the 3' proximal region was relatively conserved, and the 5' proximal region had greater variability. The nine genomic regions of CTV isolates analyzed were found to have been under purifying selection in the evolution process. Phylogenetic analysis showed that the eleven Chinese wild CTV isolates were iodated at different clades and did not reflect their geographical origins, suggesting genetic diversity among the Chinese wild CTV populations. These results will aid in the understanding of molecular evolution of the Chinese CTV populations.
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