首页> 中文期刊> 《色谱》 >聚合酶链式反应-限制性片段长度多态性和芯片生物分析技术用于渤海地区鱼种鉴定

聚合酶链式反应-限制性片段长度多态性和芯片生物分析技术用于渤海地区鱼种鉴定

         

摘要

Nine representative fish species from Bohai Bay were identified by polymerase chain reaction-restriction fragment length polymorphism ( PCR-RFLP ) and lab-on-a-chip technology.The nine fish species were Pseudosciaena polyactis , Lateolabrax japonicus , Scomberomorus niphonius , Pneumatophorus japonicus , Pseudopleuronectes yokohamae , Collichthys lucidus ,Sebastes schlegeli, Cleisthenes herzensteini and Saurida elongata. The 464 bp fragment of mitochondrial cytochrome b gene was amplified and further digested by Dde Ⅰ , Hae Ⅲ and Nla Ⅲ. The digested DNA fragments were analyzed by microfluidic capillary electrophoresis. The nine fish species were fully discriminated. The results demonstrated that the proposed method is efficient, precise and fast in fish species identification.%以渤海湾具有重要商业价值的9种海龟(小黄鱼、花鲈、蓝点马鲛、鲐、钝吻黄盖鲽、棘头梅童鱼、许氏平鲉、高眼鲽和长蛇鲻)为研究对象,利用聚合酶链式反应(PCR)-限制性片段长度多态性(RFLP)和芯片生物分析技术对其进行鱼种鉴定.首先提取其基因组脱氧核糖核酸(DNA),对其细胞色素b的特定片段(464 bp)进行扩增,然后选择Dde Ⅰ、Hae Ⅲ和Nla Ⅲ3种限制性内切酶进行酶切,并利用芯片生物分析技术得到酶切产物的特异图谱和确切的片段大小,从而有效区分了9种海鱼.研究结果表明,PCR-RFLP和芯片生物分析技术在鱼种鉴定上具有精确、鉴别和快速三大优势,可为鱼类食品检测提供科学依据.

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