Investigation of different nitrogen reduction routes and their key microbial players in wood chip-driven denitrification beds.

ABSTRACT: Field denitrification beds containing polymeric plant material are increasingly used to eliminate nitrate from agricultural drainage water. They mirror a number of anoxic ecosystems. However, knowledge of the microbial composition, the interaction of microbial species, and the carbon degradation processes within these denitrification systems is sparse. This study revealed several new aspects of the carbon and nitrogen cycle, and these findings can be correlated with the dynamics of the microbial community composition and the activity of key species. Members of the order Pseudomonadales seem to be important players in denitrification at low nitrate concentrations, while a switch to higher nitrate concentrations seems to select for members of the orders Rhodocyclales and Rhizobiales. We obse

SUBMITTER: Grießmeier V 

PROVIDER: S-EPMC5716999 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature