The mitochondrial genome of Gyrodactylus salaris (Platyhelminthes: Monogenea), a pathogen of Atlantic salmon (Salmo salar)
The mitochondrial genome of Gyrodactylus salaris (Platyhelminthes: Monogenea), a pathogen of Atlantic salmon (Salmo salar)
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DOI：
10.1017/s0031182006002010
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发表时间：
2007-05-01
期刊：
影响因子：
2.4
通讯作者：
Littlewood, D. T. J.
中科院分区：
文献类型：
--
作者：
Huyse, T.;Plaisance, L.;Littlewood, D. T. J.
在本研究中，我们描述了完整的线粒体（mt）基因组的大西洋鲑鱼寄生虫Gyrodactylus salaris，第一次为任何单殖吸虫物种。环状基因组大小为14 790 bp。在其他扁形虫线粒体基因组中识别的35个基因全部被鉴定，并且它们是从同一条链转录的。蛋白质编码和核糖体RNA（rRNA）基因与先前发表的新皮肤动物mt基因组（仅代表绦虫和双殖吸虫）的基因排列相同，基因组的总A+T含量为65%。3个tRNA基因的二级结构与其它基因重叠，3个tRNA基因的二级结构缺少DHU臂，1个tRNA基因的二级结构缺少TTC臂，共鉴定出18个长度为4 ~ 112 bp的非编码区，共278 bp，以及2个大的非编码区（799 bp和768 bp），它们几乎完全相同。mt基因组的完成为研究三趾螺种内和种间的进化关系提供了新的分子标记。
In the present study, we describe the complete mitochondrial (mt) genome of the Atlantic salmon parasite Gyrodactylus salaris, the first for any monogenean species. The circular genome is 14 790 bp in size. All of the 3 5 genes recognized from other flatworm mitochondrial genomes were identified, and they are transcribed from the same strand. The protein-coding and ribosomal RNA (rRNA) genes share the same gene arrangement as those published previously for neodermatan mt genomes (representing cestodes and digeneans only), and the genome has an overall A+T content of 65%. Three transfer RNA (tRNA) genes overlap with other genes, whereas the secondary structure of 3 tRNA genes lack the DHU arm and I tRNA gene lacks the TTC arm. Eighteen regions of non-coding DNA ranging from 4 to 112 bp in length, totalling 278 bp, were identified as well as 2 large non-coding regions (799 bp and 768 bp) that were almost identical to each other. The completion of the mt genome offers the opportunity of defining new molecular markers for studying evolutionary relationships within and among gyrodactylid species.