Floodplain nitrifiers harbor the genetic potential for utilizing a wide range of organic nitrogen compounds.

ABSTRACT: Organic compounds such as urea and cyanate can serve as nitrogen (N) sources for nitrifying microorganisms, including ammonia-oxidizing archaea (AOA) and bacteria (AOB), complete ammonia-oxidizing (comammox) bacteria, and nitrite-oxidizing bacteria (NOB). Here we investigated metagenome-assembled genomes (MAGs) for all four nitrifier guilds generated from hydrologically variable floodplain sediments of the Wind River Basin (WRB; Riverton, WY, USA) for their genetic potential to utilize organic N compounds. A vast majority of WRB nitrifier MAGs harbored urease (ure) and at least one urea transporter (utp, urt, dur3). AOA were the most abundant and phylogenetically diverse nitrifiers in WRB floodplain sediments. Several AOA MAGs encoded cyanase (cynS), nitr

SUBMITTER: Rasmussen AN 

PROVIDER: S-EPMC12625717 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature