The mitochondrial genome of a sea anemone Bolocera sp exhibits novel genetic structures potentially involved in adaptation to the deep-sea environment
Zhang, B; Zhang, YH; Wang, X; Zhang, HX; Lin, Q; linqiang@scsio.ac.cn
2017
发表期刊ECOLOGY AND EVOLUTION
卷号7期号:13页码:4951-4962
摘要The deep sea is one of the most extensive ecosystems on earth. Organisms living there survive in an extremely harsh environment, and their mitochondrial energy metabolism might be a result of evolution. As one of the most important organelles, mitochondria generate energy through energy metabolism and play an important role in almost all biological activities. In this study, the mitogenome of a deep-sea sea anemone (Bolocera sp.) was sequenced and characterized. Like other metazoans, it contained 13 energy pathway protein-coding genes and two ribosomal RNAs. However, it also exhibited some unique features: just two transfer RNA genes, two group I introns, two transposon-like noncanonical open reading frames (ORFs), and a control region-like (CR-like) element. All of the mitochondrial genes were coded by the same strand (the H-strand). The genetic order and orientation were identical to those of most sequenced actiniarians. Phylogenetic analyses showed that this species was closely related to Bolocera tuediae. Positive selection analysis showed that three residues (31 L and 42 N in ATP6, 570 S in ND5) of Bolocera sp. were positively selected sites. By comparing these features with those of shallow sea anemone species, we deduced that these novel gene features may influence the activity of mitochondrial genes. This study may provide some clues regarding the adaptation of Bolocera sp. to the deep-sea environment.
部门归属[Zhang, Bo; Zhang, Yan-Hong; Wang, Xin; Zhang, Hui-Xian; Lin, Qiang] Chinese Acad Sci, South China Sea Inst Oceanol, CAS Key Lab Trop Marine Bioresources & Ecol, Guangzhou, Guangdong, Peoples R China; [Zhang, Bo; Wang, Xin] Univ Chinese Acad Sci, Beijing, Peoples R China
关键词Adaptation Bolocera Sp Deep-Sea Sea Anemone Mitochondrial Genome
资助项目LMB
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/16305
专题中科院海洋生物资源可持续利用重点实验室
通讯作者linqiang@scsio.ac.cn
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Zhang, B,Zhang, YH,Wang, X,et al. The mitochondrial genome of a sea anemone Bolocera sp exhibits novel genetic structures potentially involved in adaptation to the deep-sea environment[J]. ECOLOGY AND EVOLUTION,2017,7(13):4951-4962.
APA Zhang, B,Zhang, YH,Wang, X,Zhang, HX,Lin, Q,&linqiang@scsio.ac.cn.(2017).The mitochondrial genome of a sea anemone Bolocera sp exhibits novel genetic structures potentially involved in adaptation to the deep-sea environment.ECOLOGY AND EVOLUTION,7(13),4951-4962.
MLA Zhang, B,et al."The mitochondrial genome of a sea anemone Bolocera sp exhibits novel genetic structures potentially involved in adaptation to the deep-sea environment".ECOLOGY AND EVOLUTION 7.13(2017):4951-4962.
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