RT Journal Article SR Electronic(1) A1 Yates, M.G. A1 Campbell, F.O.YR 1989 T1 The Effect of Nutrient Limitation on the Competition between an H2-uptake Hydrogenase Positive (Hup+) Recombinant Strain of Azotobacter chroococcum and the Hup− Mutant Parent in Mixed Populations JF Microbiology, VO 135 IS 2 SP 221 OP 226 DO https://doi.org/10.1099/00221287-135-2-221 PB Microbiology Society, SN 1465-2080, AB Competition studies in continuous culture between a Hup− mutant of Azotobacter chroococcum and its presumed isogenic Hup+ recombinant showed that Hup activity benefited the organism under N2-fixing, sucrose- or phosphate-limiting conditions but was ineffective or disadvantageous under O2-, sulphate- or iron-limitation., UL https://www.microbiologyresearch.org/content/journal/micro/10.1099/00221287-135-2-221