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Comparison of colonial volvocine algae based on phylotranscriptomic analysis of gene family evolution and natural selection
Hu, Yuxin1,2; Xing, Weiyue1,2; Song, Huiyin3; Hu, Zhengyu4; Liu, Guoxiang1
2019-11-14
Source PublicationEUROPEAN JOURNAL OF PHYCOLOGY
ISSN0967-0262
Issue1Pages:13
Abstract

This study is the first to determine the transcriptomes of eight colonial volvocine algae: Pandorina morum, P. colemaniae, Volvulina compacta, Eudorina elegans, E. cylindrica, Yamagishiella unicocca, Colemanosphaera charkowiensis and C. angeleri. By analysing these data together with the whole-genome data of Chlamydomonas reinhardtii and other colonial volvocine algae, we determined 26 979 gene families and 105 single-copy orthogroups. Using the single-copy orthogroups, we adopted a supermatrix and coalescent-based approach to perform phylotranscriptomic analysis of colonial volvocine algae. The phylogenetic relationships of most species were consistent with those of a previous study, and the results showed paraphyly of the genus Pandorina. Then, we analysed gene family expansion and contraction in colonial volvocine algae and found that they exhibited a large number of expanded and contracted gene families. In particular, the common ancestor of the Volvocaceae had the largest number of expanded gene families, which may be associated with the increased volume of extracellular matrix. Finally, using the ML method to analyse the substitution rates among colonial volvocine algae based on single-copy orthogroups, we showed a significantly higher non-synonymous substitution (dN) rate in Tetrabaena socialis. By analysing the differences in the dN/dS ratio, we found that more orthogroups exhibited a significantly higher dN/dS in T. socialis; we speculate that the higher dN/dS could indicate relaxed selection pressure and that this lower constraint allows the accumulation of more non-synonymous mutations in T. socialis.

KeywordCoalescent-based approach colonial volvocine algae gene family evolution phylotranscriptomic relaxed purifying selection substitution rates
DOI10.1080/09670262.2019.1663269
Indexed BySCI
Language英语
WOS Research AreaPlant Sciences ; Marine & Freshwater Biology
WOS SubjectPlant Sciences ; Marine & Freshwater Biology
WOS IDWOS:000495835800001
WOS KeywordPHYLOGENETIC ANALYSIS ; MOLECULAR PHYLOGENY ; GENOME ; CHLOROPHYTA ; VOLVOCACEAE ; ORIGIN ; MULTIPLE ; EUDORINA ; TREES ; TOOL
PublisherTAYLOR & FRANCIS LTD
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/342005/35425
Collection藻类生物学及应用研究中心_期刊论文
Corresponding AuthorLiu, Guoxiang
Affiliation1.Chinese Acad Sci, Inst Hydrobiol, Key Lab Algal Biol, Wuhan 430072, Hubei, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Chinese Acad Sci, Inst Oceanol, Key Lab Marine Ecol & Environm Sci, Qingdao 266071, Shandong, Peoples R China
4.Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Wuhan 430072, Hubei, Peoples R China
Recommended Citation
GB/T 7714
Hu, Yuxin,Xing, Weiyue,Song, Huiyin,et al. Comparison of colonial volvocine algae based on phylotranscriptomic analysis of gene family evolution and natural selection[J]. EUROPEAN JOURNAL OF PHYCOLOGY,2019(1):13.
APA Hu, Yuxin,Xing, Weiyue,Song, Huiyin,Hu, Zhengyu,&Liu, Guoxiang.(2019).Comparison of colonial volvocine algae based on phylotranscriptomic analysis of gene family evolution and natural selection.EUROPEAN JOURNAL OF PHYCOLOGY(1),13.
MLA Hu, Yuxin,et al."Comparison of colonial volvocine algae based on phylotranscriptomic analysis of gene family evolution and natural selection".EUROPEAN JOURNAL OF PHYCOLOGY .1(2019):13.
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