摘要
研究了用改良的CTAB法提取曲霉属产毒真菌DNA的方法,并与试剂盒提取法进行比较。经过改良的CTAB法能够成功提取出曲霉属产毒真菌的DNA,且浓度和纯度均可达到PCR扩增的标准。根据合成黄曲霉毒素的aflR基因设计两对引物,运用PCR方法进行扩增鉴定,结果表明黄曲霉、寄生曲霉和溜曲霉基因中可检出aflR基因,烟曲霉和杂色曲霉中并未检出,达到对黄曲霉毒素产生菌进行鉴定的目的。这种方法可为产毒真菌的快速检测提供参考。
This paper discusses the modified CTAB method for DNA extraction of toxigenic Aspergillus and compares it with the kit extraction method. The modified CTAB method successfully extracted DNA of toxigenic Aspergillus. The concentration and purity reached the standard of PCR amplification. Two pairs of primers were designed based on the aflR gene for aflatoxin biosynthesis regulation, and the toxigenic Aspergillus aflR gene was identified by using PCR amplification. The results show that the aflR gene is contained in the genome of Aspergillus flavus, Aspergillus parasitic and Aspergillus tamarii, Aspergillus fumigates and Aspergillus versicolor are not detected, realizing the purpose for identifying aflatoxin producing strains. This method provides a reference for rapid detection of toxigenic fungi.
出处
《科技导报》
CAS
CSCD
北大核心
2014年第14期31-34,共4页
Science & Technology Review
基金
教育部新世纪优秀人才项目(NCET-11-0842)
北京市科技创新基地培育与发展工程项目(Z131106002813027)