Ammonia leaching by resting cells of a photosynthetic purple non-sulfur bacterium, Rhodobacter sphaeroides O.U. 001

Abstract

Resting cells of Rhodobacter sphaeroides O.V 001 were tested for their ability to leach out ammonia in the absence of combined nitrogen sources in the assay medium, with or without malate under vanous gas phases. A maximum of 159.uM ammonia (mg dry Wt)-l was produced in 72 hours under air as.gas phase in the absence of malate.