中国水稻科学 ›› 2014, Vol. 28 ›› Issue (1): 78-84.DOI: 10.3969/j.issn.1001-7216.2014.01.011

• 研究报告 • 上一篇    下一篇

旱稻孢囊线虫在广西的发生及其rDNAITS异质性分析

卓侃1,宋汉达1 ,王宏洪1 ,陶冶1 ,张洪玲1,陆秀红2,黄金玲2,刘志明2 ,廖金铃1,*   

  1. 1华南农业大学 资源环境学院 植物线虫研究室, 广州 510642;2广西农业科学院 植物保护研究所, 南宁 530007;
  • 收稿日期:2013-07-30 修回日期:2013-10-01 出版日期:2014-01-10 发布日期:2014-01-10
  • 通讯作者: 廖金铃1,*
  • 基金资助:

    公益性行业(农业)科研专项经费资助项目(200903040)。

Occurence of Heterodera elachista in Guangxi Region and Its Intraspecies Heterogeneity  in rDNAITS Region

ZHUO  Kan1, SONG Handa1, WANG Honghong1, TAO Ye1, ZHANG Hongling1, LU Xiuhong2, HUANG Jinling2, LIU Zhiming2, LIAO Jinling1,*   

  1. 1Laboratory of Plant Nematology, College of Natural Resource and Environment, South China Agricultural University, Guangzhou 510642, China; 2Plant Protection Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, China;
  • Received:2013-07-30 Revised:2013-10-01 Online:2014-01-10 Published:2014-01-10
  • Contact: LIAO Jinling1,*

摘要: 2011年,从广西龙胜梯田的水稻根系和稻田土壤中分离到一种孢囊线虫。该线虫形态特征与已报道的旱稻孢囊线虫(Heterodera elachista)相符,其rDNAITS序列与GenBank中旱稻孢囊线虫的rDNAITS序列相似性为97.7%~99.3%。rDNAITS分子发育树表明该线虫与旱稻孢囊线虫以100%的置信度及较小的遗传距离形成一个单系,据此将该线虫鉴定为旱稻孢囊线虫。进一步对本研究获得的10条旱稻孢囊线虫rDNAITS区序列及Tanha Maafi等报道的1条旱稻孢囊线虫rDNAITS序列(AF498391)的酶切位点进行分析,结果发现AluⅠ、AvaⅠ、MvaⅠ和RsaⅠ 4个内切酶的酶切位点在11条序列中完全一致,而Bsh1236Ⅰ、BsuRⅠ和CfoⅠ 3种酶的酶切位点存在变异,其中Bsh1236Ⅰ和BsuRⅠ有2种变异型,CfoⅠ则有3种变异型,表明旱稻孢囊线虫的rDNAITS序列存在DNA异质性。 

关键词: 旱稻孢囊线虫, 水稻, 鉴定, rDNAITS, 异质性

Abstract: In 2011, a cyst nematode was isolated from rice roots and soils in Longsheng Terrace of Guangxi Region, China. Morphological characteristics of the cyst nematode were consistent with previous descriptions of Heterodera elachista. The rDNAITS sequences of the cyst nematode and H. elachista in GenBank shared 97.7%-99.3% identities. The phylogenetic tree based on rDNAITS showed that the cyst nematode was in the same monophyletic clade as H. elachista with 100% support and short branch differences. The results indicated the cyst nematode was Heterodera elachista. The restriction enzyme cutting sites of ten rDNAITS sequences of H. elachista amplified and the one reported by Tanha Maafi (GenBank accession number: AF498391) were analyzed. The restriction enzyme cutting sites of AluⅠ, AvaⅠ, MvaⅠ and RsaⅠ in these 11 sequences were identical, however there were 2 different patterns after Bsh1236Ⅰ and BsuRⅠ digestion, respectively, and 3 different patterns after CfoⅠ digestion. The results show intraspecies heterogeneity in rDNAITS region exists in H. elachista.

Key words: Heterodera elachista, rice, identification, rDNAITS, heterogeneity

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