Repressor mutant forms of the Azospirillum brasilense NtrC protein.

ABSTRACT: The Azospirillum brasilense mutant strains FP8 and FP9, after treatment with nitrosoguanidine, showed a null Nif phenotype and were unable to use nitrate as their sole nitrogen source. Sequencing of the ntrC genes revealed single nucleotide mutations in the NtrC nucleotide-binding site. The phenotypes of these strains are discussed in relation to their genotypes.

SUBMITTER: Huergo LF 

PROVIDER: S-EPMC522079 | biostudies-literature | 2004 Oct

REPOSITORIES: biostudies-literature