【目的】快速鉴定我国进境植物检疫性害虫南瓜实蝇Bactrocera tau(Walker),防止该虫传入扩散。【方法】基于物种特异性PCR(SS-PCR)技术,选取20种形态近似的常见实蝇,将南瓜实蝇作为阳性对照,提取基因组DNA模板,选用mt DNA COⅠ序列,检...【目的】快速鉴定我国进境植物检疫性害虫南瓜实蝇Bactrocera tau(Walker),防止该虫传入扩散。【方法】基于物种特异性PCR(SS-PCR)技术,选取20种形态近似的常见实蝇,将南瓜实蝇作为阳性对照,提取基因组DNA模板,选用mt DNA COⅠ序列,检查同源系列,设计筛选1对可快速准确鉴定南瓜实蝇的种特异性引物NF404和NR610,并进行PCR检测和验证,建立一种利用种特异性引物的快速鉴定方法。【结果】南瓜实蝇在207 bp的位置扩增出一条清晰且单一的目标条带,其余果实蝇未见条带。将截获的南瓜实蝇与其同亚属的近缘种具条实蝇、瓜实蝇的不同虫态和成虫部分虫体组织的虫样,采用本实验室建立的SS-PCR鉴定方法进行验证,结果一致。【结论】建立的南瓜实蝇的SS-PCR鉴定方法种特异性和稳定性强,能快速鉴定目标种类,解决口岸进境果蔬中截获实蝇幼虫、蛹等不同虫态和残体难于快速鉴定问题。展开更多
We developed a species-specific PCR method to identify species among dehydrated products of 10 sea cucumber species.Ten reverse species-specific primers designed from the 16 S rRNA gene,in combination with one forward...We developed a species-specific PCR method to identify species among dehydrated products of 10 sea cucumber species.Ten reverse species-specific primers designed from the 16 S rRNA gene,in combination with one forward universal primer,generated PCR fragments of ca.270 bp length for each species.The specificity of the PCR assay was tested with DNA of samples of 21 sea cucumber species.Amplification was observed in specific species only.The species-specific PCR method we developed was successfully applied to authenticate species of commercial products of dehydrated sea cucumber,and was proven to be a useful,rapid,and low-cost technique to identify the origin of the sea cucumber product.展开更多
文摘【目的】快速鉴定我国进境植物检疫性害虫南瓜实蝇Bactrocera tau(Walker),防止该虫传入扩散。【方法】基于物种特异性PCR(SS-PCR)技术,选取20种形态近似的常见实蝇,将南瓜实蝇作为阳性对照,提取基因组DNA模板,选用mt DNA COⅠ序列,检查同源系列,设计筛选1对可快速准确鉴定南瓜实蝇的种特异性引物NF404和NR610,并进行PCR检测和验证,建立一种利用种特异性引物的快速鉴定方法。【结果】南瓜实蝇在207 bp的位置扩增出一条清晰且单一的目标条带,其余果实蝇未见条带。将截获的南瓜实蝇与其同亚属的近缘种具条实蝇、瓜实蝇的不同虫态和成虫部分虫体组织的虫样,采用本实验室建立的SS-PCR鉴定方法进行验证,结果一致。【结论】建立的南瓜实蝇的SS-PCR鉴定方法种特异性和稳定性强,能快速鉴定目标种类,解决口岸进境果蔬中截获实蝇幼虫、蛹等不同虫态和残体难于快速鉴定问题。
基金Supported by the National Natural Science Foundation of China(No.31201999)the Natural Science Foundation of Guangdong Province,China(No.S2011040000463)+4 种基金the Foundation for Distinguished Young Talents in Higher Education of Guangdong,China(No.LYM11086)the Key Laboratory Program of Tropical Marine Bio-Resources and Ecology,Chinese Academy of Science(No.LMB111004)the China Spark Program(Nos.2012GA780007,2012GA780020,2012GA780008)the National Students'Innovation and Entrepreneurship Training Project(No.201210579031)the Zhanjiang Foundation for Science and Technology,China(Nos.2011C3104009,2011D0244,2012C3102018)
文摘We developed a species-specific PCR method to identify species among dehydrated products of 10 sea cucumber species.Ten reverse species-specific primers designed from the 16 S rRNA gene,in combination with one forward universal primer,generated PCR fragments of ca.270 bp length for each species.The specificity of the PCR assay was tested with DNA of samples of 21 sea cucumber species.Amplification was observed in specific species only.The species-specific PCR method we developed was successfully applied to authenticate species of commercial products of dehydrated sea cucumber,and was proven to be a useful,rapid,and low-cost technique to identify the origin of the sea cucumber product.