Comparative Analysis of Chloroplast Genomes of Seven Chaetoceros Species Revealed Variation Hotspots and Speciation Time

doi:10.3389/fmicb.2021.742554

	Comparative Analysis of Chloroplast Genomes of Seven Chaetoceros Species Revealed Variation Hotspots and Speciation Time
	Xu, Qing 1,2,3,4; Cui, Zongmei 2,3,4,5; Chen, Nansheng 2,3,4,6
	2021-11-03
发表期刊	FRONTIERS IN MICROBIOLOGY
卷号	12 页码:16
通讯作者	Chen, Nansheng(chenn@qdio.ac.cn)
摘要	Chaetoceros is a species-rich diatom genus with broad distribution and plays an important role in global carbon cycle and aquatic ecosystems. However, genomic information of Chaetoceros species is limited, hindering advanced researches on Chaetoceros biodiversity and their differential impact on ecology. In this study, we constructed full-length chloroplast genomes (cpDNAs) for seven Chaetoceros species, including C. costatus, C. curvisetus, C. laevisporus, C. muelleri, C. pseudo-curvisetus, C. socialis, and C. tenuissimus. All of these cpDNAs displayed a typical quadripartite structure with conserved genome arrangement and specific divergence. The sizes of these cpDNAs were similar, ranging from 116,421 to 119,034 bp in size, and these cpDNAs also displayed similar GC content, ranging from 30.26 to 32.10%. Despite extensive synteny conservation, discrete regions showed high variations. Divergence time estimation revealed that the common ancestor of Chaetoceros species, which formed a monophyletic clade at approximately 58 million years ago (Mya), split from Acanthoceras zachariasii at about 70 Mya. The availability of cpDNAs of multiple Chaetoceros species provided valuable reference sequences for studying evolutionary relationship among Chaetoceros species, as well as between Chaetoceros species and other diatom species.
关键词	Chaetoceros species chloroplast genome comparative genomics variation hotspots divergence time
DOI	10.3389/fmicb.2021.742554
收录类别	SCI
语种	英语
资助项目	Strategic Priority Research Program of Chinese Academy of Sciences[XDB42000000] ; Chinese Academy of Sciences Pioneer Hundred Talents Program ; Taishan Scholar Project Special Fund ; Qingdao Innovation and Creation Plan (Talent Development Program -5th Annual Pioneer and Innovator Leadership Award)[19-3-2-16-zhc] ; National Key Research and Development Program of China[2017YFC1404300]
WOS研究方向	Microbiology
WOS类目	Microbiology
WOS记录号	WOS:000719849300001
出版者	FRONTIERS MEDIA SA
引用统计	被引频次：5[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.qdio.ac.cn/handle/337002/177228
专题	海洋生态与环境科学重点实验室
通讯作者	Chen, Nansheng
作者单位	1.Huazhong Agr Univ, Coll Life Sci & Technol, Wuhan, Peoples R China 2.Chinese Acad Sci, Inst Oceanol, CAS Key Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China 3.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Ecol & Environm Sci, Qingdao, Peoples R China 4.Chinese Acad Sci, Ctr Ocean Megasci, Qingdao, Peoples R China 5.Univ Chinese Acad Sci, Coll Marine Sci, Beijing, Peoples R China 6.Simon Fraser Univ, Dept Mol Biol & Biochem, Burnaby, BC, Canada
第一作者单位	中国科学院海洋研究所; 中国科学院海洋大科学研究中心
通讯作者单位	中国科学院海洋研究所; 中国科学院海洋大科学研究中心
推荐引用方式 GB/T 7714	Xu, Qing,Cui, Zongmei,Chen, Nansheng. Comparative Analysis of Chloroplast Genomes of Seven Chaetoceros Species Revealed Variation Hotspots and Speciation Time[J]. FRONTIERS IN MICROBIOLOGY,2021,12:16.
APA	Xu, Qing,Cui, Zongmei,&Chen, Nansheng.(2021).Comparative Analysis of Chloroplast Genomes of Seven Chaetoceros Species Revealed Variation Hotspots and Speciation Time.FRONTIERS IN MICROBIOLOGY,12,16.
MLA	Xu, Qing,et al."Comparative Analysis of Chloroplast Genomes of Seven Chaetoceros Species Revealed Variation Hotspots and Speciation Time".FRONTIERS IN MICROBIOLOGY 12(2021):16.

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