A taxonomic note on the genus Prevotella: Description of four novel genera and emended description of the genera Hallella and Xylanibacter
A taxonomic note on the genus Prevotella: Description of four novel genera and emended description of the genera Hallella and Xylanibacter
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DOI：
10.1016/j.syapm.2022.126354
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发表时间：
2022-09-05
影响因子：
3.4
通讯作者：
Clavel, Thomas
中科院分区：
文献类型：
--
作者：
Hitch, Thomas C. A.;Bisdorf, Kevin;Clavel, Thomas
普雷沃特拉属由55个物种组成，其有效发布和正确的名称(截至2021年6月)具有表型、生态和功能上的多样性。本研究使用了一系列比较基因组方法(基于标记基因的基因组系统发育、核心基因组系统发育、平均氨基酸同源性、保守蛋白质百分比和支系特异性标记基因)来鉴定53个可获得基因组的物种之间的巨大差异，以及两个有效发表但尚未有效命名的物种和4个新物种。这些差异在不同的分析方法之间是一致的，并证明了将普氏杆菌划分为多个属的合理性。虽然19个生态系统类型的分布对于每个物种来说是独特的，并且在支系内不一致，但基于PFAM和CAZy家族的存在/不存在的功能谱系显示了基于所提议的属的明显的聚类。在综合所有结果的基础上，我们建议将以前归属于Prevotea属的物种重新划分为7个属，其中包括4个新属，并提出了它们的名称：Segatella、Hoylesella、Leyella和Palleniella。除了普雷沃特氏菌的重新分类外，本工作还描述了4个新种，即粪便巴氏杆菌、轮状木杆菌、小鼠木杆菌和肠扁平革菌。(C)2022年爱思唯尔有限公司。本文是CC by许可证(http://creativecommons.org/许可证/BY/4.0/)下的一篇开放获取文章。
The genus Prevotella comprises 55 species with validly published, and correct, names (at June 2021) that are phenotypically, ecologically and functionally diverse. This study used a range of comparative genome approaches (marker gene-based genome phylogeny, core genome phylogeny, average amino acid iden-tity, percentage of conserved proteins and clade-specific marker genes) to identify large differences between the 53 species for which genomes are available, as well as two effectively published yet not validly named species and four novel species. These differences were consistent between the various analysis methods and justify the separation of Prevotella into multiple genera. While the distribution across 19 ecosystem types was unique for each species and inconsistent within clades, the functional repertoire based on the presence/absence of both PFAMs and CAZy families revealed distinct clustering based on the proposed genera. Based on the integration of all results, we propose the reclassification of species previously assigned to the genus Prevotella into seven genera, including four novel genera for which the names Segatella, Hoylesella, Leyella and Palleniella are proposed. In addition to the reclassi-fication of Prevotella, this work describes four novel species, Hallella faecis, Xylanibacter rodentium, Xylanibacter muris, and Palleniella intestinalis. (c) 2022 Elsevier GmbH. This is an open access article under the CC BY license (http://creativecommons.org/ licenses/by/4.0/).