Oxidative adaptations in prokaryotes imply the oxygenic photosynthesis before crown-group <i>Cyanobacteria</i>.

ABSTRACT: The metabolic transition from anaerobic to aerobic in prokaryotes reflects adaptations to oxidative stress. Methanogen, one of the earliest life forms on Earth, has evolved into three major groups within the Euryarchaeota, exhibiting different phylogenetic affiliations and metabolic characters. In comparison with other strictly anaerobic methanogenic groups, the Class II methanogens possess a better capability to adapt to limited oxygen pressure. Cyanobacteria is considered the first and only prokaryote evolving oxygenic photosynthesis and is responsible for the Great Oxidation Event on Earth. However, the connection between oxygenic Cyanobacteria and evolutionary adaptations to oxidative stress in prokaryotes remains elusive. Here, through the gene encoding structural

SUBMITTER: Zeng Z 

PROVIDER: S-EPMC11823831 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature