Biochemistry shapes growth kinetics of nitrifiers and defines their activity under specific environmental conditions.

ABSTRACT: Is it possible to find trends between the parameters that define microbial growth to help us explain the vast microbial diversity? Through an extensive database of kinetic parameters of nitrifiers, we analyzed if the dominance of specific populations of nitrifiers could be predicted and explained. We concluded that, in general, higher growth yield (Y_XS ) and ammonia affinity (a⁰ _NH3 ) and lower growth rate (µ_max ) are observed for ammonia-oxidizing archaea (AOA) than bacteria (AOB), which would explain their considered dominance in oligotrophic environments. However, comammox (CMX), with the maximum energy harvest per mole of ammonia, and some AOB, have higher a⁰ _NH3 and lower µ_max than some AOA. Although we were

SUBMITTER: Martinez-Rabert E 

PROVIDER: S-EPMC9303882 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature