The first two complete mitogenomes of the order Apodida from deep-sea chemoautotrophic environments: New insights into the gene rearrangement, origin and evolution of the deep-sea sea cucumbers

doi:10.1016/j.cbd.2021.100839

CORC > 海洋研究所 > 中国科学院海洋研究所

	The first two complete mitogenomes of the order Apodida from deep-sea chemoautotrophic environments: New insights into the gene rearrangement, origin and evolution of the deep-sea sea cucumbers
	Sun, Shao'e 1,2,4; Sha, Zhongli 1,2,3,4; Xiao, Ning 1,2,4
刊名	COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY D-GENOMICS & PROTEOMICS
	2021-09-01
卷号	39 页码:11
关键词	Holothuroidea Mitochondrial genome Gene order Phylogenetic analysis Positive selection
ISSN号	1744-117X
DOI	10.1016/j.cbd.2021.100839
通讯作者	Xiao, Ning(xiaoning@qdio.ac.cn)
英文摘要	The deep-sea ecosystem is considered as the largest and most remote biome of the world. It is meaningful and important to elucidate the life origins by exploring the origin and adaptive genetic mechanisms of the large deepsea organisms. Sea cucumbers (Holothuroidea) are abundant and economically important group of echinoderms, living from the shallow-waters to deep-sea. In this study, we present the mitochondrial genomes of the sea cucumber Chiridota heheva and Chiridota sp. collected from the deep-sea cold seep and hydrothermal vent, respectively. This is the first reported mitochondrial genomes from the order Apodida. The mitochondrial genomes of C. heheva (17,200 bp) and Chiridota sp. (17,199 bp) display novel gene arrangements with the first protein-coding gene rearrangements in the class Holothuroidea. Bases composition analysis showed that the A + T content of deep-sea holothurians were significantly higher than that of the shallow-water groups. We compared the arrangement of genes from the 24 available holothurian mitogenomes and found that the transposition, reverse transposition and tandem-duplication-random-losses (TDRL) may be involved in the evolution of mitochondrial gene arrangements in Holothuroidea. Phylogenetic analysis revealed that the Apodida clustered with Elasipodida, forming two basal deep-sea holothurian clades. The divergence between the deep-sea and shallowwater holothurians was located at 386.93 Mya, during the Late Devonian. Mitochondrial protein-coding genes of deep-sea holothurians underwent relaxed purifying selection. There are 57 positive selected amino acids sites for some mitochondrial genes of the three deep-sea clades, implying they may involve in the adaption of deep-sea sea cucumbers.
资助项目	Strategic Priority Research Program of the Chinese Academy of Sciences[XDB42000000] ; National Key Research and Development Program of China[2018YFC0310800] ; National Science Fund for Distinguished Young Scholars[42025603] ; National Natural Science Foundation of China Youth Fund[31801961] ; Biological Resources Program, Chinese Academy of Sciences[KFJ-BRP-017-38]
WOS研究方向	Biochemistry & Molecular Biology ; Genetics & Heredity
语种	英语
出版者	ELSEVIER SCIENCE INC
WOS记录号	WOS:000686894200006
内容类型	期刊论文
源URL	[http://ir.qdio.ac.cn/handle/337002/176257]
专题	中国科学院海洋研究所
通讯作者	Xiao, Ning
作者单位	1.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, Qingdao 266071, Peoples R China 3.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 4.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Biol & Biotechnol, Qingdao 266071, Peoples R China
推荐引用方式 GB/T 7714	Sun, Shao'e,Sha, Zhongli,Xiao, Ning. The first two complete mitogenomes of the order Apodida from deep-sea chemoautotrophic environments: New insights into the gene rearrangement, origin and evolution of the deep-sea sea cucumbers[J]. COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY D-GENOMICS & PROTEOMICS,2021,39:11.
APA	Sun, Shao'e,Sha, Zhongli,&Xiao, Ning.(2021).The first two complete mitogenomes of the order Apodida from deep-sea chemoautotrophic environments: New insights into the gene rearrangement, origin and evolution of the deep-sea sea cucumbers.COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY D-GENOMICS & PROTEOMICS,39,11.
MLA	Sun, Shao'e,et al."The first two complete mitogenomes of the order Apodida from deep-sea chemoautotrophic environments: New insights into the gene rearrangement, origin and evolution of the deep-sea sea cucumbers".COMPARATIVE BIOCHEMISTRY AND PHYSIOLOGY D-GENOMICS & PROTEOMICS 39(2021):11.