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题名: Bichir microRNA repertoire suggests a ray-finned fish affinity of Polypteriforme
作者: Yang, Liandong1, 2; Zhang, Zhaolei3, 4; He, Shunping1
通讯作者: He, SP (reprint author), Chinese Acad Sci, Inst Hydrobiol, Fish Phylogeny & Biogeog Grp, Wuhan 430072, Hubei, Peoples R China.
关键词: Phylogeny ; Polypteriformes ; MicroRNAs ; Bichir
刊名: GENE
发表日期: 2015-07-25
DOI: 10.1016/j.gene.2015.04.058
卷: 566, 期:2, 页:242-247
收录类别: SCI
文章类型: Article
部门归属: [Yang, Liandong ; He, Shunping] Chinese Acad Sci, Inst Hydrobiol, Key Lab Aquat Biodivers & Conservat, Wuhan 430072, Hubei, Peoples R China ; [Yang, Liandong] Univ Chinese Acad Sci, Beijing 100049, Peoples R China ; [Zhang, Zhaolei] Univ Toronto, Dept Mol Genet, Toronto, ON, Canada ; [Zhang, Zhaolei] Univ Toronto, Donnelly Ctr Cellular & Biomol Res, Toronto, ON, Canada
WOS标题词: Science & Technology ; Life Sciences & Biomedicine
类目[WOS]: Genetics & Heredity
研究领域[WOS]: Genetics & Heredity
英文摘要: The phylogenetic position of Polypteriforme (bichirs) remains elusive, despite extensive research both on morphological and molecular datasets. Unfortunately morphological cladistic analyses and molecular phylogenetic analyses had reached conflicting conclusions, as Polypteriformes were either grouped with lobe-finned fishes (Sarcopterygii) or ray-finned fishes (Actinoptelygii), or even classified as their own group, the Brachiopterygii. In this study, we applied a third independent source of datasets, the presence versus absence of microRNAs, to re-investigate the phylogenetic relationship of bichirs. Through deep sequencing of small RNA library, we showed that bichirs should be grouped into ray-finned fishes rather than lobe-finned fishes. Phylogenetic analysis confirmed that bichirs were placed as the most basal member of the ray-finned fishes. Bichirs shared five unique microRNA families with teleostei, which were not found in any other species investigated to date. Bichirs have also retained three of five microRNAs that were previously deemed to be lost exclusively in teleostei. Furthermore, we report more than one hundred novel microRNAs that are unique to bichir. The identification of microRNAs in bichir provides overwhelming evidence for their affinity of ray-finned fishes. The sarcopterygian-like characteristics such as lobed fins, paired ventral lungs, and external gills in juveniles should not be considered as derived traits shared with those of sarcopterygians. (C) 2015 Elsevier B.V. All rights reserved.
关键词[WOS]: ACTINOPTERYGIAN FISHES ; FOSSIL RECORD ; PHYLOGENY ; INTERRELATIONSHIPS ; SUPPORT ; RESOLVE ; GENES ; SYSTEMATICS ; VERTEBRATE ; MORPHOLOGY
语种: 英语
WOS记录号: WOS:000356189300016
ISSN号: 0378-1119
Citation statistics:
内容类型: 期刊论文
URI标识: http://ir.ihb.ac.cn/handle/342005/23817
Appears in Collections:水生生物多样性与资源保护研究中心_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Hydrobiol, Key Lab Aquat Biodivers & Conservat, Wuhan 430072, Hubei, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
3.Univ Toronto, Dept Mol Genet, Toronto, ON, Canada
4.Univ Toronto, Donnelly Ctr Cellular & Biomol Res, Toronto, ON, Canada
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