Cyanobacterial mats are widely assumed to have been globally significant hot spots of biogeochemistry and evolution during the Archean and Proterozoic, but little is known about their quantitative contributions to global primary productivity or Earth’s oxygenation. Modern systems show that mat biogeochemistry is the outcome of concerted activities and intimate interactionsbetween various microbial metabolisms. Emerging knowledge of the regulation of oxygenic and sulfide-driven anoxygenic photosynthesis by versatile cyanobacteria, and their interactions with sulfur-oxidizing bacteria and sulfate-reducing bacteria, highlights how ecological and geochemical processes can control O2 production in cyanobacterial mats in unexpected ways. This review explores such biological controls on O2 production. We argue that the intertwined effects of light availability, redox geochemistry, regulation and competition of microbial metabolisms, and biogeochemical feedbacks result in emergent properties of cyanobacterial mat...

中文翻译：

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蓝藻垫中 O2 产生的控制及其对地球氧化的影响

蓝藻垫被广泛认为是太古宙和元古代期间全球重要的生物地球化学和进化热点，但对它们对全球初级生产力或地球氧化作用的定量贡献知之甚少。现代系统表明，垫生物地球化学是各种微生物代谢之间协同活动和密切相互作用的结果。关于多功能蓝藻调节氧和硫化物驱动的无氧光合作用的新知识，以及它们与硫氧化细菌和硫酸盐还原细菌的相互作用，突出了生态和地球化学过程如何以意想不到的方式控制蓝藻垫中 O2 的产生。本综述探讨了对 O2 产生的此类生物控制。