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烟草扭脉病毒云南分离物rtp基因克隆及序列分析

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杨亚辉, 杨洁, 陈平, 等. 烟草扭脉病毒云南分离物rtp基因克隆及序列分析[J]. 植物医学, 2024, (2): 38-48. doi: 10.13718/j.cnki.zwyx.2024.02.005
引用本文: 杨亚辉, 杨洁, 陈平, 等. 烟草扭脉病毒云南分离物rtp基因克隆及序列分析[J]. 植物医学, 2024, (2): 38-48. doi: 10.13718/j.cnki.zwyx.2024.02.005
YANG Yahui, YANG Jie, CHEN Ping, et al. Cloning and Sequencing Analysis of the Readthrough Protein Gene of Different Tobacco Vein Distorting Virus Isolates of Yunnan Province[J]. PLANT HEALTH AND MEDICINE, 2024, (2): 38-48. doi: 10.13718/j.cnki.zwyx.2024.02.005
Citation: YANG Yahui, YANG Jie, CHEN Ping, et al. Cloning and Sequencing Analysis of the Readthrough Protein Gene of Different Tobacco Vein Distorting Virus Isolates of Yunnan Province[J]. PLANT HEALTH AND MEDICINE, 2024, (2): 38-48. doi: 10.13718/j.cnki.zwyx.2024.02.005

烟草扭脉病毒云南分离物rtp基因克隆及序列分析

详细信息
    作者简介:

    杨亚辉, 硕士, 主要从事植物病毒学研究. .

  • 中图分类号: S435.72

Cloning and Sequencing Analysis of the Readthrough Protein Gene of Different Tobacco Vein Distorting Virus Isolates of Yunnan Province

  • 摘要: 探究来自云南不同时间和不同地区的烟草扭脉病毒(TVDV)各分离物间rtp基因序列差异, 分析烟草丛顶病近年在田间发生趋势减缓的原因. 以2020—2022年从云南楚雄、 大理、 保山及红河采集的染病烟草样品为材料, 对TVDV的rtp基因进行扩增和序列分析, 共得到TVDV 7个不同分离物的rtp基因序列, 长度均为2 172 nt, 包含618 nt的cp基因及1 554 nt的rtd区; 推导的TVDVRTP蛋白共编码722个氨基酸, 其中包含CP蛋白的205个氨基酸, RTD的517个氨基酸. 多重序列比对结果发现, 获得的7个TVDV分离物与GenBank上登录的其他TVDV分离物间cp基因核苷酸序列一致性为98.71%~100%, 不同TVDV分离物间CP蛋白的氨基酸序列一致性为98.05%~100%, 存在4个氨基酸的差异. 获得的7个TVDV分离物与GenBank数据库登录的其他TVDV分离物间rtd区核苷酸序列一致性为96.68%~99.81%, RTD蛋白的氨基酸序列一致性为96.52%~100%, 存在39个氨基酸的差异. 这些TVDV分离物rtp基因的变异可能会对TVDV的蚜虫传播效率产生影响, 进而影响到烟草丛顶病在田间的发生与流行.
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  • 收稿日期:  2023-12-19

烟草扭脉病毒云南分离物rtp基因克隆及序列分析

    作者简介: 杨亚辉, 硕士, 主要从事植物病毒学研究.
  • 云南农业大学 植物保护学院, 昆明 650201
基金项目: 

摘要: 探究来自云南不同时间和不同地区的烟草扭脉病毒(TVDV)各分离物间rtp基因序列差异, 分析烟草丛顶病近年在田间发生趋势减缓的原因. 以2020—2022年从云南楚雄、 大理、 保山及红河采集的染病烟草样品为材料, 对TVDV的rtp基因进行扩增和序列分析, 共得到TVDV 7个不同分离物的rtp基因序列, 长度均为2 172 nt, 包含618 nt的cp基因及1 554 nt的rtd区; 推导的TVDVRTP蛋白共编码722个氨基酸, 其中包含CP蛋白的205个氨基酸, RTD的517个氨基酸. 多重序列比对结果发现, 获得的7个TVDV分离物与GenBank上登录的其他TVDV分离物间cp基因核苷酸序列一致性为98.71%~100%, 不同TVDV分离物间CP蛋白的氨基酸序列一致性为98.05%~100%, 存在4个氨基酸的差异. 获得的7个TVDV分离物与GenBank数据库登录的其他TVDV分离物间rtd区核苷酸序列一致性为96.68%~99.81%, RTD蛋白的氨基酸序列一致性为96.52%~100%, 存在39个氨基酸的差异. 这些TVDV分离物rtp基因的变异可能会对TVDV的蚜虫传播效率产生影响, 进而影响到烟草丛顶病在田间的发生与流行.

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