Marine Isolates of Trimastix marina Form a Plesiomorphic Deep-branching Lineage within Preaxostyla, Separate from Other Known Trimastigids (Paratrimastix n. gen.)
文献类型：期刊论文
| 作者 | Zhang, QD; Taborsky, P; Silberman, JD; Panek, T; Cepicka, I; Simpson, AGB |
| 刊名 | PROTIST
 |
| 出版日期 | 2015-09-01 |
| 卷号 | 166期号:4页码:468-491 |
| 关键词 | Anaerobe cytoskeleton flagellar apparatus oxymonads phylogeny ultrastructure |
| ISSN号 | 1434-4610 |
| 产权排序 | [Zhang, Qiandian; Simpson, Alastair G. B.] Dalhousie Univ, Dept Biol, Halifax, NS B3H 4R2, Canada; [Zhang, Qiandian] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China; [Taborsky, Petr; Panek, Tomas; Cepicka, Ivan] Charles Univ Prague, Fac Sci, Dept Zool, CR-12844 Prague 2, Czech Republic; [Silberman, Jeffrey D.] Univ Arkansas, Dept Biol Sci, Fayetteville, AR 72701 USA |
| 通讯作者 | Simpson, AGB (reprint author), Dalhousie Univ, Dept Biol, Halifax, NS B3H 4R2, Canada. asimpso2@dal.ca |
| 英文摘要 | Trimastigids are free-living, anaerobic protists that are closely related to the symbiotic oxymonads, forming together the taxon Preaxostyla (Excavata: Metamonada). We isolated fourteen new strains morphologically corresponding to two species assigned to Trimastix (until now the only genus of trimastigids), Trimastix marina and Trimastix pyriformis. Unexpectedly, marine strains of Trimastix marina branch separately from freshwater strains of this morphospecies in SSU rRNA gene trees, and instead form the sister group of all other Preaxostyla. This position is confirmed by three-gene phylogenies. Ultrastructural examination of a marine isolate of Trimastix marina demonstrates a combination of trimastigid-like features (e.g. preaxostyle-like I fibre) and ancestral characters (e.g. absence of thickened flagellar vane margins), consistent with inclusion of marine T. marina within Preaxostyla, but also supporting its distinctiveness from 'freshwater T. marina' and its deep-branching position within Preaxostyla. Since these results indicate paraphyly of Trimastix as currently understood, we transfer the other better-studied trimastigids to Paratrimastix n. gen. and Paratrimastigidae n. fam. The freshwater form previously identified as T. marina is described as Paratrimastix eleionoma n. sp., and Trimastix pyriformis becomes Paratrimastix pyriformis n. comb. Because of its phylogenetic position, 'true' Trimastix is potentially important for understanding the evolution of mitochondrion-related organelles in metamonads. (C) 2015 Elsevier GmbH. All rights reserved. |
| 研究领域[WOS] | Microbiology |
| 关键词[WOS] | MULTIPLE SEQUENCE ALIGNMENT ; RIBOSOMAL-RNA PHYLOGENY ; EXCAVATE TAXA ; ULTRASTRUCTURE ; FLAGELLATE ; DIPLOMONADS ; DIVERSITY ; EUKARYOTA ; ORGANIZATION ; SYSTEMATICS |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000361496200006 |
| 源URL | [http://ir.yic.ac.cn/handle/133337/9991]  |
| 专题 | 烟台海岸带研究所_中科院烟台海岸带研究所知识产出 |
| 推荐引用方式 GB/T 7714 | Zhang, QD,Taborsky, P,Silberman, JD,et al. Marine Isolates of Trimastix marina Form a Plesiomorphic Deep-branching Lineage within Preaxostyla, Separate from Other Known Trimastigids (Paratrimastix n. gen.)[J]. PROTIST,2015,166(4):468-491. |
| APA | Zhang, QD,Taborsky, P,Silberman, JD,Panek, T,Cepicka, I,&Simpson, AGB.(2015).Marine Isolates of Trimastix marina Form a Plesiomorphic Deep-branching Lineage within Preaxostyla, Separate from Other Known Trimastigids (Paratrimastix n. gen.).PROTIST,166(4),468-491. |
| MLA | Zhang, QD,et al."Marine Isolates of Trimastix marina Form a Plesiomorphic Deep-branching Lineage within Preaxostyla, Separate from Other Known Trimastigids (Paratrimastix n. gen.)".PROTIST 166.4(2015):468-491. |
入库方式： OAI收割
来源：烟台海岸带研究所
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