食品科学 ›› 2008, Vol. 29 ›› Issue (12): 393-396.

• 生物工程 • 上一篇    下一篇

黄曲霉DNA提取及PCR-RFLP检测方法的建立

 邵碧英, 王传得, 郑晶, 黄晓蓉   

  1. 福建出入境检验检疫局; 福建农林大学动物科学学院;
  • 出版日期:2008-12-15 发布日期:2011-12-08

Study on DNA Extraction and PCR-RFLP Detection Method of Aspergillus flavus

 SHAO  Bi-Ying, WANG  Chuan-De, ZHENG  Jing, HUANG  Xiao-Rong   

  1. 1. Fujian Entry-Exit Inspection and Quarantine Bureau,Fuzhou 350001,China; 2. College of Animal Science,Fujian Agriculture and Forestry University,Fuzhou 350002,China
  • Online:2008-12-15 Published:2011-12-08

摘要: 采用3种提取方法、3种菌丝前处理提取黄曲霉标准菌株的DNA,凝胶电泳结果表明经-80℃冷冻过夜或液氮处理菌丝、用氯化苄方法提取、并经RNase处理的DNA效果最好。合成扩增aflR基因的2对引物,用巢式PCR验证PCR产物的非假阳性。PCR产物的HincⅡ和PvuⅡ酶切结果与预期的完全一致,表明建立的黄曲霉PCR-RFLP检测方法是可行的。

关键词: 黄曲霉, DNA, PCR-RFLP

Abstract: Aspergillus flavus standard strain DNAS were isolated by using three extraction methods and three pretreatment methods of mycelia for benzyl chloride extraction method. The gel electrophoresis results showed that the DNA isolated by using benzyl chloeide method and treated with RNase is the best after the mycelia are freezed overnight at -80 ℃ or grinded with liquid nitrogen. Two pairs of primes were synthesized to amplify aflR gene. The PCR products are not false positive which is confirmed by nest-PCR. The expected restriction endonuclease analysis results of the PCR products with HincⅡand PvuⅡwere achieved,which showed that the PCR-RFLP detection method is feasible for Aspergillus flavus.

Key words: Aspergillus flavus, DNA, PCR-RFLP