School of Biological Sciences, University of Aberdeen, Aberdeen, UK.
School of Biological Sciences, University of Bristol, Bristol, UK.
Nat Commun. 2022 Jul 15;13(1):4110. doi: 10.1038/s41467-022-31847-7.
The Terrestrial Miscellaneous Euryarchaeota Group has been identified in various environments, and the single genome investigated thus far suggests that these archaea are anaerobic sulfite reducers. We assemble 35 new genomes from this group that, based on genome analysis, appear to possess aerobic and facultative anaerobic lifestyles and may oxidise rather than reduce sulfite. We propose naming this order (representing 16 genera) "Lutacidiplasmatales" due to their occurrence in various acidic environments and placement within the phylum Thermoplasmatota. Phylum-level analysis reveals that Thermoplasmatota evolution had been punctuated by several periods of high levels of novel gene family acquisition. Several essential metabolisms, such as aerobic respiration and acid tolerance, were likely acquired independently by divergent lineages through convergent evolution rather than inherited from a common ancestor. Ultimately, this study describes the terrestrially prevalent Lutacidiciplasmatales and highlights convergent evolution as an important driving force in the evolution of archaeal lineages.
陆生广古菌群已在各种环境中被鉴定出来，迄今为止对其单个基因组的研究表明，这些古菌是厌氧亚硫酸盐还原菌。我们从该群组中组装了 35 个新的基因组，基于基因组分析，这些古菌似乎具有需氧和兼性厌氧的生活方式，并且可能会氧化而不是还原亚硫酸盐。由于它们存在于各种酸性环境中，并在门 Thermoplasmatota 内，我们提议将该目（代表 16 个属）命名为“Lutacidip lasmatales”。门水平的分析表明，Thermoplasmatota 的进化经历了几个高水平新基因家族获得的时期。一些重要的代谢途径，如需氧呼吸和耐酸能力，可能是通过趋同进化由不同的谱系独立获得的，而不是从共同的祖先继承而来的。最终，本研究描述了在陆地上普遍存在的 Lutacidip lasmatales，并强调了趋同进化是古菌谱系进化的一个重要驱动力。
