Ammonia determines transcriptional profile of microorganisms in anaerobic digestion.

ABSTRACT: Anaerobic digestion is important for the management of livestock manure with high ammonia level. Although ammonia effects on anaerobic digestion have been comprehensively studied, the molecular mechanism underlying ammonia inhibition still remains elusive. In this study, based on metatranscriptomic analysis, the transcriptional profile of microbial community in anaerobic digestion under low (1500mgL^-1) and high NH₄⁺ (5000mgL^-1) concentrations, respectively, were revealed. The results showed that high NH₄⁺ concentrations significantly inhibited methane production but facilitated the accumulations of volatile fatty acids. The expression of methanogenic pathway was significantly inhibited by high NH₄⁺ conc

SUBMITTER: Zhang N 

PROVIDER: S-EPMC6175727 | biostudies-literature | 2018 Oct - Dec

REPOSITORIES: biostudies-literature