Wang Yinzhao, Xie Ruize, Hou Jialin, Lv Zhenbo, Li Liuyang, Hu Yaoxun, Huang Hungchia, Wang Fengping
State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology Shanghai Jiao Tong University Shanghai China.
School of Oceanography Shanghai Jiao Tong University Shanghai China.
mLife. 2022 Mar 30;1(1):96-100. doi: 10.1002/mlf2.12013. eCollection 2022 Mar.
Microorganisms, called anaerobic methane-oxidizing archaea (ANME), can reduce a large amount of greenhouse gas methane and therefore have the potential to cool the Earth. We collected nearly all ANMEs genomes in public databases and performed a comprehensive comparative genomic analysis and molecular dating. Our results show that ANMEs originated in the late Archaean to early Proterozoic eon. During this period of time, our planet Earth was experiencing the Great Oxygenation Event and Huronian Glaciation, a dramatic drop in the Earth's surface temperature. This suggests that the emergence of ANMEs may contribute to the reduction of methane at that time, which is an unappreciated potential cause that led to the Huronian Glaciation.
被称为厌氧甲烷氧化古菌（ANME）的微生物能够减少大量温室气体甲烷，因此有可能使地球降温。我们收集了公共数据库中几乎所有的ANME基因组，并进行了全面的比较基因组分析和分子年代测定。我们的结果表明，ANME起源于太古宙晚期到元古宙早期。在这段时间里，我们的地球正在经历大氧化事件和休伦冰期，地球表面温度急剧下降。这表明ANME的出现可能有助于当时甲烷的减少，这是导致休伦冰期的一个未被重视的潜在原因。
