Effect of different ammonia concentrations on community succession of ammonia-oxidizing microorganisms in a simulated paddy soil column.

ABSTRACT: Ammonia oxidation is performed by both ammonia-oxidizing bacteria (AOB) and ammonia-oxidizing archaea (AOA). To explore the effect of ammonia concentration on the population dynamic changes of ammonia-oxidizing microorganisms, we examined changes in the abundance and community composition of AOA and AOB in different layers. Most of the archaeal amoA sequences were Nitrosotalea-related and the proportion that Nitrosotalea cluster occupied decreased in the surface layer and increased in the deep layer during the cultivation process. Nitrosopumilus-related sequences were only detected in the deep layer in the first stage and disappeared later. Both phylogenetic and quantitative analysis showed that there were increased Nitrosomonas-related sequences appeared in the surface layer where the amm

SUBMITTER: Baolan H 

PROVIDER: S-EPMC3432066 | biostudies-literature | 2012

REPOSITORIES: biostudies-literature