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草业学报 ›› 2015, Vol. 24 ›› Issue (4): 121-126.DOI: 10.11686/cyxb20150414

• 研究论文 • 上一篇    下一篇

甘肃省张掖地区苜蓿花叶病病原的检测

文朝慧1,2,南志标1*   

  1. 1.兰州大学草地农业科技学院,草地农业生态系统国家重点实验室,甘肃 兰州 730020;
    2.甘肃出入境检验检疫局,甘肃 兰州 730010
  • 收稿日期:2013-10-11 修回日期:2013-12-16 出版日期:2015-04-20 发布日期:2015-04-20
  • 通讯作者: 南志标,E-mail:zhibiao@lzu.edu.cn
  • 作者简介:文朝慧(1969-),女,四川简阳人,高级农艺师,在读博士。E-mail:wzhhli@163.com
  • 基金资助:
    公益性行业(农业)科技专项(No.201303057),国家质检总局科技计划项目(2012IK270)和甘肃出入境检验检疫局科技计划项目(2011GK001)资助。

Detection of pathogenic organisms in Medicago sativa in Zhangye, Gansu Province

WEN Zhao-Hui1,2, NAN Zhi-Biao1*   

  1. 1.College of Pastoral Agricultural Science and Technology, State Key Laboratory of Grassland Agro-Ecosystems, Lanzhou University, Lanzhou 730020, China;
    2.Gansu Exit-Entry Inspection and Quarantine Bureau, Lanzhou 730010, China
  • Received:2013-10-11 Revised:2013-12-16 Online:2015-04-20 Published:2015-04-20

摘要: 2011年7月在甘肃省张掖地区发现发生花叶病的苜蓿田块,地块中病株呈现黄斑花叶、叶柄扭曲及整株矮化的症状。为明确其病原,采集病株后利用血清学和分子生物学方法对病样进行了检测。 DAS-ELISA、RT-PCR-RFLP及病毒CP基因序列测定分析结果表明,苜蓿病样受到番茄花叶病毒(Tomato mosaic virus,ToMV)和苜蓿花叶病毒(Alfalfa mosaic virus,AMV)的复合侵染。这是国际上首次报道番茄花叶病毒对苜蓿的侵染,讨论了由这两种病毒引致病害的发生与防治。

Abstract: Two Medicago sativa plants with severe leaf mosaic symptoms were collected from alfalfa fields in Linze County, Gansu Province, in July 2011. The two samples were tested by enzyme-linked-immunosorbent assay (ELISA) and reverse transcription polymerase chain reaction (RT-PCR). The tested specimens were negative for Cucumber mosaic virus, Tobacco streak virus, Watermelon mosaic virus, Potato virus X, Potato virus Y, Tobacco ringspot virus, Tomato ringspot virus and Bean yellow mosaic virus. However, Tomato mosaic virus (ToMV) and Alfalfa mosaic virus (AMV) were detected. The 687 and 351 bp fragments obtained from PCR with appropriate species-specific ToMV and AMV primers showed 99% nucleotide similarity with published ToMV CP and AMV CP gene sequences. A 805 bp PCR products was obtained using genus-specific Tobamovirus primers and the presence of ToMV was confirmed by RT-PCR-RFLP. To the best of our knowledge, this is the first report of ToMV in alfalfa.