Description of Asgardarchaeum abyssi gen. nov. spec. nov., a novel species within the class Asgardarchaeia and phylum Asgardarchaeota in accordance with the SeqCode

IF 4.3 3区 材料科学 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC
Daniel Tamarit , Stephan Köstlbacher , Kathryn E. Appler , Kassiani Panagiotou , Valerie De Anda , Christian Rinke , Brett J. Baker , Thijs J.G. Ettema
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引用次数: 0

Abstract

Asgardarchaeota, commonly referred to as Asgard archaea, is a candidatus phylum-rank archaeal clade that includes the closest archaeal relatives of eukaryotes. Despite their prevalence in the scientific literature, the name Asgardarchaeota lacks nomenclatural validation. Here, we describe a novel high-quality metagenome-assembled genome (MAG), AB3033_2TS, proposed to serve as the nomenclatural type for the species Asgardarchaeum abyssiTS according to the rules of the SeqCode. Based on protein content and compositional features, we infer that A. abyssi AB3033_2TS is an acetogenic chemoheterotroph, possibly a facultative lithoautotroph, and is adapted to a thermophilic lifestyle. Utilizing genomes from Asgard archaea, TACK, and Euryarchaea, we perform phylogenomic reconstructions using the GTDB archaeal marker genes, the current reference set for taxonomic classification. Calibrating relative evolutionary divergence (RED) values for Asgardarchaeota using established Thermoproteota lineages in the GTDB r207 reference tree, we establish a robust classification and propose Asgardarchaeum as the type genus for the family Asgardarchaeaceae (fam. nov)., the order Asgardarchaeales (ord. nov.), the class Asgardarchaeia (class. nov.), and the phylum Asgardarchaeota (phyl. nov.). This effort aims to preserve taxonomic congruence in the scientific literature.

根据 SeqCode 描述 Asgardarchaeum abyssi gen.
阿斯加德古菌群(Asgardarchaeota)通常被称为阿斯加德古菌,是一个候选的门级古菌支系,包括真核生物的近缘古菌。尽管它们在科学文献中很常见,但阿斯加德古菌群(Asgardarchaeota)这一名称缺乏命名学上的验证。这里,我们描述了一个新的高质量元基因组组装基因组(MAG)--AB3033_2TS,建议根据 SeqCode 规则将其作为 Asgardarchaeum abyssiTS 这一物种的命名类型。根据蛋白质含量和组成特征,我们推断阿贝斯藻 AB3033_2TS 是一种产乙酸的化合自养型生物,可能是一种面性自养型生物,并适应嗜热的生活方式。我们利用来自阿斯加德古菌、TACK 和 Euryarchaea 的基因组,使用 GTDB 古菌标记基因(目前的分类参考集)进行了系统发生组重建。通过使用 GTDB r207 参考树中已建立的热蛋白类系校准 Asgardarchaeota 的相对进化差异(RED)值,我们建立了一个稳健的分类,并提议将 Asgardarchaeum 作为 Asgardarchaeaceae 科(新科)、Asgardarchaeales 目(新目)、Asgardarchaeia 类(新类)和 Asgardarchaeota 门(新门)的模式属。这项工作旨在保持科学文献中分类学的一致性。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
7.20
自引率
4.30%
发文量
567
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