Physiological Characterization of an Anaerobic Ammonium-Oxidizing Bacterium Belonging to the Candidatus Scalindua Group

The phylogenetic affiliation and physiological characteristics (e.g., K-s and maximum specific growth rate [mu(max)]) of an anaerobic ammonium oxidation (anammox) bacterium, Candidatus Scalindua sp., enriched from the marine sediment of Hiroshima Bay, Japan, were investigated. Candidatus Scalindua sp. exhibits higher affinity for nitrite and a lower growth rate and yield than the known anammox species.