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时间:2020-05-02
《DNA条形码技术在陕西省鼠疫疫区宿主动物鉴定中的应用.pdf》由会员上传分享,免费在线阅读,更多相关内容在行业资料-天天文库。
1、·1042·中华流行病学杂志20l4年9月第35卷第9期ChinJEpidemiol,September2014,Vo1.35,No.9·监IJ·DNA条形码技术在陕西省鼠疫疫区宿主动物鉴定中的应用安翠红孙养信陈宝宝范锁平霍丽霞余建军吕文【摘要】目的探讨DNA条形码技术在鼠疫疫区宿主动物鉴定中的应用,并建立陕西省鼠疫疫区宿主动物DNA条形码数据库。方法运用DNA条形码技术检测陕西省定边县鼠疫疫区3目6科12属l4种139只宿主动物以及7个鼠种8个不同部位的62份残体标本线粒体细胞色素C氧化酶I亚基基因序列。结果种内
2、遗传距离≤2%,种间遗传距离为8.9%~15.1%;邻接法系统树能区分l4个不同物种的类群;采集的残体标本能检测到目的基因并用于鉴定;研究中还纠正了既往定边县鼠疫疫区黄鼠命名。结论DNA条形码技术能弥补形态学鉴定的不足,可用于鼠疫疫区宿主动物及残体标本的分类鉴定。【关键词】鼠疫疫区;DNA条形码;基因,线粒体细胞色素C氧化酶I亚基;鼠种鉴定;残体鉴定IdentificationonhostanimalsforplaguebyDNAbarcodingtechnologyinShaanxiprovinceAnCuiho
3、ng,SunYangxin,ChenBaobao,FanSupping,HuoLixia,SheJianjun,u耽n.DepartmentforPlague.BrucellosisandEtiologicBiologicalVectorContro1.aanxProvincialCenterforDiseaseControlandPrevention.Xi’an710054,ChinaCorrespondingauthor:SunYangxin,Email:sxpco@l26.cornsworkwassuppor
4、tedbyagrantfromtheScienceandTechnologyResearchandDevelopmentProgramofShaanxiPr0vince(No.2012K16一l2-03).【Abstract】0bjectiveToapplytheDNAbarcodingtechnologyforidentificationonhostanimalandtoestablishthehostanimalDNAbarcodedatabaseonnaturalfociofplagueinShaanxi.M
5、ethodsl39hostanimalsbelongingto3orders.6familiesand12generaand62residuesbelongingto7speciesfrom8difierentpartsoftheprovince,weredetected.DNAbarcodingtechnologywasusedtoanalyzetheDNACOIgenesequenceOfthenatura1fociofplagueiflDingbiancounty.ResultsTheintra—specif
6、icgeneticdistancewaslessthan2%whiletheinter-specificdistancerangedfrom8.9%tol5.1%.Fou~eenmajorclusterswereapparentlyshowedonaNeighbor—Joiningtree.Residuesamplescouldbedetectedregardingtheobjectivegene.Alashangroundsquirrelwaspreviouslynoticedtocarry14majorclus
7、ters,whichwerepreviouslymistakenlynamedasCitellusdauricusinDingbiancounty.ConclusionDNAbarcodingtechnologycouldovercomethesho~comingscausedbythemorphologicalidentificationSOcouldbeusedtoidentifythehostanima1andresiduesinthenaturalfoCUSofplague.【Keywords】Plague
8、area;DNAbarcoding;MitochondrialcytochromeCoxidasesubunitIgene:Speciesidentification:Residuesidentification陕西省鼠疫疫区位于该省西北部的定边县境鼠(Dipussagitta)、五趾跳鼠(Allactagasibirica)、小家内,处于鄂尔多斯高原荒漠草
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