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Use of nuclear and mitochondrial DNA PCR and sequencing for molecular identification of Diphyllobothrium isolates potentially infective for humans

机译:核和线粒体DNA PCR和测序技术在对人牙菌具有潜在感染力的双叶菊分离株的分子鉴定中的应用

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Tapeworms of the genus Diphyllobothrium (Cobold, 1858) are widely distributed all around the world and some of them are agents of human diphyllobothriasis. Approximately 50 species have been described within the Diphyllobothrium genus but only 13 are human pathogens. Species identification by using morphological criteria is very difficult. We determined the value of 18S ribosomal RNA gene, internal transcribed spacer (ITS) and cytochrome c oxidase subunit 1 gene (COI) sequences to differentiate between Diphyllobothrium isolates. Sequences from 18 isolates (larvae or adults) of D. latum, D. nihonkaiense, D. ditremum, D. dentriticum and D. stemmacephalum species were obtained. COI region sequences analysis was clearly more discriminative than those of the ITS1 and 18S rRNA and was a useful tool for identifying specimens.Key words: Diphyllobothrium / genotyping / 18S rRNA / ITS / COI / PCR
机译:双叶类(Dioblobothrium)的858虫(Cobold,1858)广泛分布于世界各地,其中一些是人类双叶类杆菌病的病原体。在Diphyllobothrium属中已描述了大约50种,但只有13种是人类病原体。利用形态学标准进行物种鉴定非常困难。我们确定了18S核糖体RNA基因,内部转录间隔区(ITS)和细胞色素c氧化酶亚基1基因(COI)序列的价值,以区分双毛杆菌。获得了来自D. latum,D。nihonkaiense,D。ditremum,D。dentriticum和D. stemmacephalum物种的18种分离株(幼虫或成虫)的序列。 COI区域序列分析显然比ITS1和18S rRNA具有更高的判别力,并且是鉴定标本的有用工具。关键词:双叶菊/基因分型/ 18S rRNA / ITS / COI / PCR

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