Physiological significance of vanadium uptake during N2 and NC3- metabolism in various strains of a N2-fixing cyanobacterium nostoc muscorum

Abstract

The nitrogenase and nitrate reductase activities of the molybdenum (Mo)-requiring parent Nostoc muscorum and its tungsten (W)- and chromium (Cr)-requiring mutant strains, growing with Mo, W and Cr, respectively, were significantly enhanced by the addition of 0.063 μM vanadium (V). Such interactions were not observed with NO2- as a nitrogen source. © 1984 The Japanese Society of Plant Physiologists.