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瓜黑星病菌、枯萎病菌和蔓枯病菌的三重PCR检测
引用本文:高永洋,王楠,高观朋,王伟.瓜黑星病菌、枯萎病菌和蔓枯病菌的三重PCR检测[J].植物病理学报,2010,40(4):343-350.
作者姓名:高永洋  王楠  高观朋  王伟
作者单位:华东理工大学 生物反应器工程国家重点实验室, 上海 200237
基金项目:国家自然科学基金项目,上海市重点攻关项目,国家重点实验室专项经费 
摘    要:通过测定黄瓜黑星病菌(Cladosporium cucumerinum)rDNA的ITS序列,比对近缘种及瓜类几种重要病原菌的ITS序列,设计出特异性引物HX-1/HX-2,经过对引物HX-1/HX-2PCR条件的优化,可以扩增出1条190bp的黄瓜黑星病菌特异性DNA条带,灵敏度达到1pg/μL。进一步将引物HX-1/HX-2和瓜类枯萎病菌、瓜类蔓枯病菌特异检测引物Fn-1/Fn-2、Mn-1/Mn-2组合,建立三重PCR体系,可一次检测出瓜类黑星病菌、瓜类枯萎病菌、瓜类蔓枯病菌3种瓜类植物重要的病原菌。建立了可以应用于田间瓜类黑星病菌PCR检测技术和瓜类主要病害三重PCR检测技术,对瓜类病害的诊断和防治具有重要的指导作用。

关 键 词:瓜黑星病菌  瓜枯萎病菌  瓜蔓枯病菌  分子检测  三重PCR  

Triplex PCR detection of Cladosporium cucumerinum,Fusarium oxysporum f.sp.niveum and Mycosphaerella melonis in infected plant tissues
GAO Yong-yang,WANG Nan,GAO Guan-peng,WANG Wei.Triplex PCR detection of Cladosporium cucumerinum,Fusarium oxysporum f.sp.niveum and Mycosphaerella melonis in infected plant tissues[J].Acta Phytopathologica Sinica,2010,40(4):343-350.
Authors:GAO Yong-yang  WANG Nan  GAO Guan-peng  WANG Wei
Institution:State Key Laboratory of Bioreactor Engineering, East China University of Science and Technology, Shanghai 200237, China
Abstract:rDNA ITS sequences of Cladosporium cucumerinum were sequenced. A pair of specific primers HX-1/HX-2 was designed from homology comparison of ITS sequences of C. cucumerinum with closely-rela-ted species and some pathogenic fungi on cucurbitaceous plants. A single special PCR band of 190 bp existed in C. cucumerinum was amplified under the optimized PCR parameters using HX-1/HX-2 primers and the detection sensitivity was 1 pg/μL of genomic DNA. Then a multiplex PCR system was developed to detect C. cucumerinum, Fusarium oxysporum f. sp. niveum and Mycosphaerella melonis simultaneously with combining primers HX-1/HX-2, Fn-1/Fn-2 and Mn-1/Mn-2. It was the first time to establish the triplex PCR system for detecting C. cucumerinum, F. oxysporum f. sp. niveum and M. melonis in infected plant tissues simultaneously. The PCR-based method developed here could direct the diagnosis of plant disease and pathogen monitoring.
Keywords:Cladosporium cucumerinum  Fusarium oxysporum f  sp  niveum  Mycosphaerella melonis  molecular detection  triplex PCR  
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