新型候选种类对Fennoscandian Shield深层地下水中的关键代谢过程作出贡献
Mark Dopson1, Maryam Rezaei Somee1, Carolina González-Rosales1
1Centre for Ecology and Evolution in Microbial Model Systems (EEMiS), Linnaeus University, 39231 Kalmar, Sweden.
ISME communications
|October 18, 2024
概括
在地球深层地下水中新发现的微生物是代谢活跃的,有助于全球营养循环. 这项研究描述了新的微生物生命及其在大陆深层生物圈中的功能.
科学领域:
- 微生物学 微生物学
- 地质化学 地质化学
- 环境科学 环境科学
背景情况:
- 深层生物圈是巨大的微生物多样性,在很大程度上是未经培养和未经描述的.
- 了解这些微生物群落对于理解地球的营养和能量循环至关重要.
研究的目的:
- 描述Fennoscandian Shield深层地下地下水中的微生物群落的代谢潜力和活动.
- 识别和描述新型微生物种类及其生态作用.
主要方法:
- 基因组测序以产生元基因组组装基因组 (MAG) 和单增强基因组 (SAG).
- 超转录组学用于评估微生物群落的活动.
- 生物信息分析以识别新型种类及其代谢途径.
主要成果:
- 产生了1270个被复制的MAG和SAG,包括7个新型类,34个顺序和72个家族.
- 确定了主要与Patescibacteria,Thermoproteota和Nanoarchaeota相关的新种类.
- 在112个新 taxa中,有30个是转录活跃的,这表明它们对深层生物圈的贡献.
- 新的种群具有代谢能力,包括碳固定 (伍德-Ljungdahl路径),固定,硫和氧化和发酵.
结论:
- 新型微生物种群是深层生物圈的活跃组成部分,对碳,和硫循环有重大贡献.
- 这些发现扩大了我们对微生物多样性和在地下环境中的功能的理解.
- 鉴定出的代谢过程凸显了深层生物圈在全球生物地化学循环中的关键作用.
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