FixK₂ Is the Main Transcriptional Activator of Bradyrhizobium diazoefficiens nosRZDYFLX Genes in Response to Low Oxygen.

ABSTRACT: The powerful greenhouse gas, nitrous oxide (N₂O) has a strong potential to drive climate change. Soils are the major source of N₂O and microbial nitrification and denitrification the main processes involved. The soybean endosymbiont Bradyrhizobium diazoefficiens is considered a model to study rhizobial denitrification, which depends on the napEDABC, nirK, norCBQD, and nosRZDYFLX genes. In this bacterium, the role of the regulatory cascade FixLJ-FixK₂-NnrR in the expression of napEDABC, nirK, and norCBQD genes involved in N₂O synthesis has been previously unraveled. However, much remains to be discovered regarding the regulation of the respiratory N₂O reductase (N₂OR), the key enzyme that mi

SUBMITTER: Torres MJ 

PROVIDER: S-EPMC5582078 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature