对和硫循环的影响:Nitrospirota在陆地含水层中的细胞系和利基范围
Olivia E Mosley1,2, Emilie Gios1,3, Kim M Handley1
1School of Biological Sciences, The University of Auckland, Auckland 1010, New Zealand.
ISME communications
|April 23, 2024
概括
尼特洛斯皮罗塔细菌在地下水中普遍存在,它们的分布受到氧气水平的影响. 特定的血统具有独特的和硫循环代谢途径,适应水表条件.
科学领域:
- 微生物学 微生物学
- 环境科学 环境科学
- 地质化学 地质化学
背景情况:
- 尼特洛斯皮罗塔在水中和地下的和硫循环中起着至关重要的作用.
- 了解陆地含水层中的Nitrospirota对于了解生物地球化学过程至关重要.
研究的目的:
- 在陆地含水层中调查Nitrospirota的遗传学和生态利基协会.
- 在不同氧气条件下识别Nitrospirota系的代谢能力和分布模式.
主要方法:
- 在59个地下水井中分析Nitrospirota社区的组成.
- 恢复和分析七个Nitrospirota元基因组组装基因组 (MAGs).
- 对MAG与其他743个Nitrospirota基因组进行比较的基因组分析.
主要成果:
- 尼特洛斯皮罗塔的分布与地下水氧气的可用性密切相关,显示出明显的有氧-无氧血统的权衡.
- 主要的含水层系,包括非化和9FT-COMBO-42-15类,具有酸盐降解和硫循环机制.
- 类9FT-COMBO-42-15表现出明显的碳固定路径 (rTCA和Wood-Ljungdahl) 和硫氧化和异型酸盐降解的能力.
结论:
- 尼特洛斯皮罗塔在地下水中广泛分布,氧气的可用性推动了谱系的差异化.
- 特定的Nitrospirota系适应低氧,富含硫的含水层环境,积极合和硫循环.
- 这项研究强调了Nitrospirota,特别是9FT-COMBO-42-15类在地下生物地球化学过程中的代谢多功能性.
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