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园艺学报 ›› 2013, Vol. 40 ›› Issue (5): 989-.

• 新技术与方法 • 上一篇    下一篇

红掌根腐病病原鉴定及其PCR 检测方法

周晓云, 游春平   

  1. (1 广州花卉研究中心,广州 510360;2 仲恺农业工程学院农学院,广州 510225)
  • 出版日期:2013-05-25 发布日期:2013-05-25

Identification and PCR Detection of the Pathogen Causing Root Rot of Anthurium andraeanum

 ZHOU  Xiao-Yun, YOU  Chun-Ping   

  1. (1Guangzhou Flower Research Center,Gangzhou 510360,China;2Zhongkai University of Agriculture and Engineering,
    Guangzhou 510225,China)
  • Online:2013-05-25 Published:2013-05-25

摘要: 利用真菌通用引物ITS1 和ITS4 扩增红掌根腐病菌转录间隔区并进行序列测定,通过序列
比较,设计了1 对红掌根腐病菌的特异引物SF1/SR2,对30 个红掌根腐病病原菌、8 种其它真菌和2 种
细菌基因组DNA 进行PCR 扩增。结果表明,只有红掌根腐病菌获得572 bp 的特异带。使用引物SF1/SR2
对华丽腐霉进行PCR 扩增,其检测灵敏度在DNA 水平上可达1 pg。运用设计的引物从红掌根腐病菌基
因组DNA 以及人工接种和自然发病的红掌植株中扩增到572 bp 的特异片段,实现了对红掌根腐病菌的快
速可靠的检测。

关键词: 红掌, 根腐病菌, ITS 分析, PCR 检测

Abstract: Abstract:Based on the difference in internal transcribed spacer (ITS)sequences of Pythium splendens
and other Pythium spp.,a specific pair of primers SF1/SR2 was designed. Among 30 P. splendens isolates
causing root rot of Anthurium andraeanum,and other eight fungi and two bacteria species,the primer pair
amplified a single 572 bp product from all isolates of P. splendens,but not from any other isolates tested.
The sensitivity of detection of the pathogen P. splendens with primers SF1/SR2 was 1 pg genomic DNA. It
could amplified a specific single product from natural infected A. andraeanum plants,that was not
amplified from healthy tissue. The results showed that the PCR protocol provides a rapid,sensitive and
reliable tool routine detection and identification of P. splendens. In addition,this study is beneficial to
control root rot disease of A. andraeanum.

Key words: Anthurium andraeanum, Pythium splendens, ITS analysis, PCR detection

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