文献类型： 外文期刊
作者： Lu, Lianming 1 ; Liu, Shunmin 1 ; Pu, Zhanxu 1 ; An, Baoju 1 ; Du, Danchao 1 ; Hu, Xiurong 1 ; Lv, Jia 1 ; Huang, Zhendong 1 ;
作者机构： 1.Zhejiang Acad Agr Sci, Zhejiang Citrus Res Inst, Taizhou 318020, Peoples R China
关键词： citrus tatter leaf virus; genetic diversity; population structure; host-driven adaptation
期刊名称：VIRUSES-BASEL （ 影响因子：3.5； 五年影响因子：3.7 ）
ISSN：
年卷期： 2025 年 17 卷 7 期
页码：
收录情况： SCI
摘要： Citrus tatter leaf virus (CTLV), a major pathogen threatening global citrus production, remains poorly characterized in terms of its regional genetic diversity and evolutionary dynamics. To address this gap, we conducted a comprehensive population genetic analysis of CTLV in Zhejiang Province, China, using 181 coat protein (CP) gene sequences-the largest regional CTLV dataset to date. Our analyses uncovered substantial genetic diversity among Zhejiang CTLV isolates. Phylogenetic reconstructions revealed that these isolates span multiple clades, closely aligning with global CTLV population structures, indicative of recurrent viral introductions and extensive regional circulation. Population structure analyses revealed significant genetic differentiation driven by geography, with Jinhua isolates forming a distinct cluster, and by host species, with Citrus reticulata 'Criton' isolates diverging from those in other citrus varieties. Selection pressure analysis indicated that while most CP polymorphic sites were under purifying selection, several clade-specific codons showed signatures of positive selection. These results offer new insights into CTLV's population structure and localized evolutionary trajectories, enhancing our understanding of its regional adaptation and informing strategies for disease management and control of this globally significant pathogen.
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