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温度,pH值和氧气的可用性有助于古代Nitrososphaeria的功能差异化

Zhen-Hao Luo¹, Qi Li¹, Yuan-Guo Xie²

¹State Key Laboratory of Biocontrol, Guangdong Provincial Key Laboratory of Plant Resources and Southern Marine Science and Engineering Guangdong Laboratory (Zhuhai), School of Life Sciences, Sun Yat-Sen University, Guangzhou 510275, PR China.

The ISME journal

|February 16, 2024

概括

这项研究重建了各种氨氧化古生物 (Nitrososphaeria) 的基因组,揭示了它们多样化的代谢能力和进化史. 这些发现揭示了这些丰富的微生物在全球碳和循环中的生态作用.

科学领域:

微生物学微生物学
环境科学环境科学
基因组学就是基因组学.

背景情况:

尼特罗斯菌群是丰富的古生物,对碳和循环至关重要.
这一类内的深分支非氨氧化古生物 (非AOA) 由于基因组数据有限,人们对其了解甚少.

研究的目的:

描述Nitrososphaeria的功能多样性和进化历史,包括代表性不足的非AOA血统.
为了提供一个更全面的理解Nitrososphaeria的生态作用和进化轨迹.

主要方法:

从酸性矿井排水和温泉沉积物中重建了128个Nitrososphaeria元基因组组装基因组 (MAGs).
比较基因组学分析代谢途径并推断进化关系.

主要成果:

现存的非AOA表现出不同的代谢功能,包括碳固定,一氧化碳氧化,甲基生成和各种呼吸道.
进化分析表明,Nitrososphaeria的共同祖先是一个有氧热爱者.
功能多样化似乎是由氧气,pH值和温度等环境因素驱动的,除了代谢途径的获得.

结论:

这项研究扩大了我们对Nitrososphaeria多样性和功能的理解,超出了氨氧化.
环境因素和代谢适应已经塑造了这个全球丰富的考古群体的进化.
提供了对Nitrososphaeria生态和深层进化历史的不那么偏见的观点.

关键词:

尼托索斯法利亚菌 (Nitrososphaeria) 是一种爱酸的人是爱酸的人.考古学的进化考古学的进化功能差异化的功能差异化.转基因组学是指转基因组学.一个热爱的热爱者.

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