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Position: Home > Articles > Real-time PCR assay for detection of the frequency of imazalil-resistance of Penicil-lium digitatum Acta Phytopathologica Sinica 2008,38 (6) 561-569

Real-time PCR法定量检测柑橘绿霉病菌对抑霉唑的抗性频率

作  者:
陈广进;张志芳;姜丽英;徐发三;马忠华;李红叶
单  位:
浙江省衢州市农业信息和培训中心;浙江大学农业与生物技术学院生物技术研究所;浙江省衢州市植物保护站
关键词:
柑橘绿霉病;抑霉唑;杀菌剂抗性;real-time PCR
摘  要:
抑霉唑被广泛用来防治由指状青霉菌(Penicillium digitatum)引起的柑橘绿霉病。已有研究表明,柑橘绿霉病菌对抑霉唑的抗性由CYP51基因启动子区5个126-bp转录增强子的简单串联重复和126-bp转录增强子上199-bp的特异性片段插入所引起。基于这2种抗性分子机制,通过设计特异引物和优化条件,建立real-time PCR高通量分子检测技术,用于快速检测柑橘包装贮藏库中绿霉病菌群体对抑霉唑的抗性频率FR,指导科学用药。
译  名:
Real-time PCR assay for detection of the frequency of imazalil-resistance of Penicil-lium digitatum
作  者:
CHEN Guang-jin1,ZHANG Zhi-fang1,JIANG Li-ying2,XU Fa-san3,MA Zhong-hua1,LI Hong-ye1(1Institute of Biotechnology,College of Agriculture and Biotechnology,Zhejiang University,Hangzhou 310029,China;2Center of Agriculture Information and Training of Quzhou City,Zhejiang Province,Quzhou 324401,China;3Plant Protection Station of Quzhou City,Zhejiang Province,Quzhou 324401,China)
关键词:
Penicillium digitatum;imazalil;fungicide resistance;real-time PCR
摘  要:
Imazalil is a systemic fungicide used worldwide for the control of citrus green mold caused by Pe-nicillium digitatum.Up to date,two molecular mechanisms of resistance to the fungicide imazalil were found from P.digitatum isolates in Zhejiang province.One was five copies of a 126-bp transcriptional enhancer unit in promoter region of CYP51 gene(resistant type Ⅰ)and the other was a unique 199-bp insert within the 126-bp transcriptional enhancer unit(resistant type Ⅱ).Based on these mechanisms,a real-time PCR assay was developed to rapidly quantify the frequency of the resistance(FR)of P.digitatum in pathogen samples collec-ted from storehouses of citrus.

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