Repressor Mutant Forms of the Azospirillum brasilense NtrC Protein

AUTOR(ES)

Huergo, Luciano F.

FONTE

American Society for Microbiology

RESUMO

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.

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