The complete mitochondrial genome of the black coral Chrysopathes formosa (Cnidaria: Anthozoa: Antipatharia) supports classification of antipatharians within the subclass Hexacorallia
The complete mitochondrial genome of the black coral Chrysopathes formosa (Cnidaria: Anthozoa: Antipatharia) supports classification of antipatharians within the subclass Hexacorallia
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DOI：
10.1016/j.ympev.2006.08.016
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发表时间：
2007-03-01
影响因子：
4.1
通讯作者：
France, Scott C.
中科院分区：
文献类型：
--
作者：
Brugler, Mercer R.;France, Scott C.
黑珊瑚包括全球分布的浅水和深水分类群，其在珊瑚虫纲中的系统发育位置一直存在争议。为了进一步评估其系统发育关系，我们对抗病型福尔摩沙蝶的线粒体全基因组进行了测序。圆形线粒体基因组（18,398 bp）由13个能量通路蛋白编码基因和2个核糖体RNA组成，但只有两个转移RNA基因（trnM和trnW），以及nad5基因内的1组内含子，该内含子仅包含nad1和nad3的拷贝。在抗疾病线粒体基因组中未发现新的基因。基因顺序和基因组内容与海葵Metridium老性（Hexacorallia亚纲）最相似，不同之处在于三个相邻基因（cox - 2-nad4-nad6）的相对位置和cox - 1基因中I组内含子的缺失（来自抗病理者）。多个蛋白编码基因的系统发育分析支持将Antipatharia归类为Hexacorallia亚纲而不是Ceriantipatharia亚纲；然而，黑珊瑚在六爪珊瑚中的姐妹分类群关系仍然没有定论。(c) 2006爱思唯尔公司版权所有。
Black corals comprise a globally distributed shallow- and deep-water taxon whose phylogenetic position within the Anthozoa has been debated. We sequenced the complete mitochondrial genome of the antipatharian Chrysopathes formosa to further evaluate its phylogenetic relationships. The circular mitochondrial genome (18,398 bp) consists of 13 energy pathway protein-coding genes and two ribosomal RNAs, but only two transfer RNA genes (trnM and trnW), as well as a group I intron within the nad5 gene that contains the only copies of nad1 and nad3. No novel genes were found in the antipatharian mitochondrial genome. Gene order and genome content are most similar to those of the sea anemone Metridium senile (subclass Hexacorallia), with differences being the relative location of three contiguous genes (cox2-nad4-nad6) and absence (from the antipatharian) of a group I intron within the cox1 gene. Phylogenetic analyses of multiple protein-coding genes support classifying the Antipatharia within the subclass Hexacorallia and not the subclass Ceriantipatharia; however, the sister-taxon relationships of black corals within Hexacorallia remain inconclusive. (c) 2006 Elsevier Inc. All rights reserved.