华北农学报 ›› 2022, Vol. 37 ›› Issue (3): 200-205. doi: 10.7668/hbnxb.20193080

所属专题: 油料作物 植物保护 生物技术

• 资源环境·植物保护 • 上一篇    下一篇

江苏大豆上分离的豇豆轻斑驳病毒基因组序列克隆及特征分析

吉颖1, 孙枫2, 吴淑华2, 李硕2, 涂丽琴2, 高丹娜2, 崔晓艳3, 陈新3, 季英华2, , 郭青云1,   

  1. 1.青海大学 农林科学院,青海省农业有害生物综合治理重点实验室,农业部西宁作物有害生物科学观测实验站,青海 西宁 810016
    2.江苏省农业科学院 植物保护研究所,江苏 南京 210014
    3.江苏省农业科学院 经济作物研究所,江苏 南京 210014
  • 收稿日期:2022-03-28 出版日期:2022-06-30
  • 通讯作者: 季英华, 郭青云
  • 作者简介:

    吉 颖(1997-),男,江西赣州人,在读硕士,主要从事园艺蔬菜作物病毒研究。

  • 基金资助:
    国家自然科学基金项目(32072506); 国家现代农业产业技术体系建设专项(CARS-24-C-01); 国家现代农业产业技术体系建设专项(1011); 青海省农业有害生物综合治理重点实验室(2021-ZJ-Y08)

Genomic Sequence Cloning and the Characteristics Analysis of Cowpea mild mottle virus Infecting Soybean from Jiangsu Province

JI Ying1, SUN Feng2, WU Shuhua2, LI Shuo2, TU Liqin2, GAO Danna2, CUI Xiaoyan3, CHEN Xin3, JI Yinghua2, , GUO Qingyun1,   

  1. 1. Academy of Agriculture and Forestry Sciences,Qinghai University,Qinghai Provincial Key Laboratory of Agricultural Integrated Pest Management,Scientific Observing and Experimental Station of Crop Pests in Xining,Ministry of Agriculture and Rural Affairs,Xining 810016,China
    2. Institute of Plant Protection, Jiangsu Academy of Agricultural Sciences,Nanjing 210014,China
    3. Institute of Crop Economics Research, Jiangsu Academy of Agricultural Sciences,Nanjing 210014,China
  • Received:2022-03-28 Published:2022-06-30
  • Contact: JI Yinghua, GUO Qingyun

摘要:

为明确豇豆轻斑驳病毒江苏分离物的基因组结构特征,阐明其分类地位及进化特点,选择采自江苏的CpMMV大豆分离物作为研究对象,针对病毒基因组序列设计了4对特异性引物,以病样总RNA反转录后获得的cDNA为模板,通过分段法对其基因组序列片段进行了PCR扩增,扩增产物克隆至T载体经验证后进行序列测定,获得的序列片段经拼接组装得到病毒全基因组序列。序列分析结果显示,CpMMV江苏分离物基因组核苷酸序列全长8 194 bp,编码6个蛋白,5'端和3'端各含有一个非编码区(UTR),长度分别为72,117 nt;在编码的6个蛋白中,CP与其他分离物之间的同源性较高(96.5%~100.0%),相对保守;而RdRp(81.1%~98.2%)、TGB1(81.0%~97.0%)、TGB3(80.9%~95.6%)同源性相对较低,在不同分离物中表现较好的多样性;基于全基因组序列的系统进化分析结果显示,江苏分离物与已公开的其他CpMMV分离物同源性较高,共同聚类到一个大分支上,其中与中国安徽分离物同源性最高(98.2%),与海南分离物次之(96.0%),而与美国、巴西、印度、墨西哥、肯尼亚等国外分离物同源性相对较低(<82.7%)。这些研究结果表明,CpMMV江苏分离物与其他CpMMV分离物具有类似的基因组结构特征,在系统进化上,江苏分离物与国内分离物近缘而与国外分离物远缘。

关键词: 大豆, 豇豆轻斑驳病毒, 全基因组序列, 克隆, 特征分析

Abstract:

To characterize the genomic structure of Cowpea mild mottle virus (CpMMV)Jiangsu isolate and clarify its taxonomic status and evolutionary characteristics,4 pairs of specific primers were designed and the genomic fragments were amplified using cDNA obtained from reverse transcription of total RNA of a soybean sample collected from Jiangsu as a temple.The amplified products were cloned and sequenced,and the obtained fragments were assembled to get the full genomic sequence.Sequence analysis revealed the genome of Jiangsu isolate were 8 194 bp in length,containing 6 ORFs and 2 untranslated regions(UTRs):5' UTR(72 nt)and 3' UTR(117 nt).Among the six proteins encoded by CpMMV,CP shared highest amino acid sequence identities with other isolates(96.5%-100.0%),while RdRp(81.1%-98.2%),TGB1(81.0%-97.0%)and TGB3(80.9%-95.6%)shared relatively low sequence identities,indicating CP might be a conservative gene and RdRp,TGB1,TGB3 might show good diversity in different isolates.The phylogenetic analysis based on the whole genomic sequence revealed that Jiangsu isolate was clustered with other CpMMV isolates in a branch and it shared highest nucleotide sequence identities with 2 Chinese isolates(98.2% with Anhui isolate,96.0% with Hainan isolate),compared with other foreign isolates such as the United States,Brazil,India,Mexico,Kenya and so on(<82.7%).These results clarified the genomic structure of Jiangsu isolate,which shared similar character with other CpMMV isolates and phylogenetic analysis revealed Jiangsu isolates clustered with other isolates from China with higher sequences identities,compared with foreign isolates.

Key words: Soybean, Cowpea mild mottle virus, Genomic sequence, Clone, Characteristics analysis

引用本文

吉颖, 孙枫, 吴淑华, 李硕, 涂丽琴, 高丹娜, 崔晓艳, 陈新, 季英华, 郭青云. 江苏大豆上分离的豇豆轻斑驳病毒基因组序列克隆及特征分析[J]. 华北农学报, 2022, 37(3): 200-205. doi: 10.7668/hbnxb.20193080.

JI Ying, SUN Feng, WU Shuhua, LI Shuo, TU Liqin, GAO Danna, CUI Xiaoyan, CHEN Xin, JI Yinghua, GUO Qingyun. Genomic Sequence Cloning and the Characteristics Analysis of Cowpea mild mottle virus Infecting Soybean from Jiangsu Province[J]. Acta Agriculturae Boreali-Sinica, 2022, 37(3): 200-205. doi: 10.7668/hbnxb.20193080.

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