Highly integrated adaptive mechanisms in Spiribacter halalkaliphilus, a bacterium abundant in Chinese soda-saline lakes.

ABSTRACT: Soda-saline lakes are polyextreme environments inhabited by many haloalkaliphiles, including one of the most abundant Spiribacter species. However, its mechanisms of adaptation are not ecophysiologically characterized. Based on a large-scale cultivation strategy, we obtained a representative isolate of this Spiribacter species whose relative abundance was the highest (up to 15.63%) in a wide range of salinities in the soda-saline lakes in Inner Mongolia, China. This species is a chemoorganoheterotrophic haloalkaliphile. It has a small and streamlined genome and utilizes a wide variety of compatible solutes to resist osmotic pressure and multiple monovalent cation/proton antiporters for pH homeostasis. In addition to growth enhancement by light under microaerobic conditions, cell growth, or

SUBMITTER: Xue Q 

PROVIDER: S-EPMC9292931 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature