Golyshina Olga V, Bargiela Rafael, Golyshin Peter N
School of Natural Sciences, Bangor University, Deiniol Road, Bangor, LL57 2UW, UK.
Extremophiles. 2019 Jan;23(1):1-7. doi: 10.1007/s00792-018-1071-2. Epub 2018 Nov 29.
Recently, the order Thermoplasmatales was expanded through the cultivation and description of species Cuniculiplasma divulgatum and corresponding family Cuniculiplasmataceae. Initially isolated from acidic streamers, signatures of these archaea were ubiquitously found in various low-pH settings. Eight genomes with various levels of completeness are currently available, all of which exhibit very high sequence identities and genomic conservation. Co-existence of Cuniculiplasmataceae with archaeal Richmond Mine acidophilic nanoorganisms ('ARMAN')-related archaea representing an intriguing group within the "microbial dark matter" suggests their common fundamental environmental strategy and metabolic networking. The specific case of "Candidatus Mancarchaeum acidiphilum" Mia14 phylogenetically affiliated with "Ca. Micrarchaeota" from the superphylum "Ca. Diapherotrites" along with the presence of other representatives of 'DPANN' with significantly reduced genomes points at a high probability of close interactions between the latter and various Thermoplasmatales abundant in situ. This review critically assesses our knowledge on specific functional role and potential of the members of Cuniculiplasmataceae abundant in acidophilic microbiomes through the analysis of distribution, physiological and genomic patterns, and their interactions with 'ARMAN'-related archaea.
最近，通过对隐秘栖热原体（Cuniculiplasma divulgatum）物种的培养和描述以及相应的隐秘栖热原体科（Cuniculiplasmataceae），嗜热栖热菌目（Thermoplasmatales）得到了扩展。这些古菌最初是从酸性丝状菌中分离出来的，在各种低pH环境中普遍发现它们的踪迹。目前有8个完整性不同的基因组，所有这些基因组都表现出非常高的序列同一性和基因组保守性。隐秘栖热原体科与代表“微生物暗物质”中一个有趣类群的与里士满矿嗜酸性纳米微生物（'ARMAN'）相关的古菌共存，这表明它们有共同的基本环境策略和代谢网络。“嗜酸曼卡古菌（Candidatus Mancarchaeum acidiphilum）”Mia14在系统发育上与来自“Ca. Diapherotrites”超群的“Ca. Micrarchaeota”相关，同时存在其他基因组显著缩小的“DPANN”代表，这表明后者与原位丰富的各种嗜热栖热菌目之间很可能存在密切相互作用。本综述通过分析嗜酸微生物群落中丰富的隐秘栖热原体科成员的分布、生理和基因组模式及其与'ARMAN'相关古菌的相互作用，批判性地评估了我们对其特定功能作用和潜力的认识。
