Nitrosomonas communis Strain YNSRA,an Ammonia-Oxidizing Bacterium,Isolated from the Reed Rhizoplane in an Aquaponics Plant

摘要

An ammonia-oxidizing bacterium (strain YNSRA) was isolated from the rhizoplane of the reed (Phragmites communis) used in an aquaponics plant which is a wastewater treatment plant.Strain YNSRA was identified as Nitrosomonas communis by taxonomic studies.The hydroxylamine-cyto-chrome c reductase (HCR) of strain YNSRA was found to have a higher activity (25.60 u/mg) than that of Nitrosomonas europaea ATCC25978~T (8.94 u/mg).Ribulose-l,5-bisphosphate carboxylase (RubisCO) activity was detected at very low levels in strain YNSRA,whereas strain ATCC25978~T had definite activity.