Diversity, abundance and activity of ammonia-oxidizing microorganisms in fine particulate matter.

ABSTRACT: Increasing ammonia emissions could exacerbate air pollution caused by fine particulate matter (PM_2.5). Therefore, it is of great importance to investigate ammonia oxidation in PM_2.5. This study investigated the diversity, abundance and activity of ammonia oxidizing archaea (AOA), ammonia oxidizing bacteria (AOB) and complete ammonia oxidizers (Comammox) in PM_2.5 collected in Beijing-Tianjin-Hebei megalopolis, China. Nitrosopumilus subcluster 5.2 was the most dominant AOA. Nitrosospira multiformis and Nitrosomonas aestuarii were the most dominant AOB. Comammox were present in the atmosphere, as revealed by the occurrence of Candidatus Nitrospira inopinata in PM_2.5. The average cell numbers of AOA, AOB and Ca. N. inopinata were 2.82 × 10⁴

SUBMITTER: Gao JF 

PROVIDER: S-EPMC5150234 | biostudies-literature | 2016 Dec

REPOSITORIES: biostudies-literature