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Comparative Analysis of Chloroplast Genomes of Seven Chaetoceros Species Revealed Variation Hotspots and Speciation Time
Xu, Qing1,2,3,4; Cui, Zongmei2,3,4,5; Chen, Nansheng2,3,4,6
2021-11-03
Source PublicationFRONTIERS IN MICROBIOLOGY
Volume12Pages:16
Corresponding AuthorChen, Nansheng(chenn@qdio.ac.cn)
AbstractChaetoceros 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.
KeywordChaetoceros species chloroplast genome comparative genomics variation hotspots divergence time
DOI10.3389/fmicb.2021.742554
Indexed BySCI
Language英语
Funding ProjectStrategic 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 Research AreaMicrobiology
WOS SubjectMicrobiology
WOS IDWOS:000719849300001
PublisherFRONTIERS MEDIA SA
Citation statistics
Document Type期刊论文
Identifierhttp://ir.qdio.ac.cn/handle/337002/177228
Collection海洋生态与环境科学重点实验室
Corresponding AuthorChen, Nansheng
Affiliation1.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
First Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences;  Center for Ocean Mega-Science, Chinese Academy of Sciences
Corresponding Author AffilicationInstitute of Oceanology, Chinese Academy of Sciences;  Center for Ocean Mega-Science, Chinese Academy of Sciences
Recommended Citation
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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