Transcription of the Azospirillum brasilense nifH gene is positively regulated by NifA and NtrA and is negatively controlled by the cellular nitrogen status

Experiments in molecular genetics

1972 • 28,260 citations

Assaying chimeric genes in plants: The GUS gene fusion system

1987 • 4,516 citations

A manual for the practical study of root-nodule bacteria

1970 • 4,158 citations

Broad host range DNA cloning system for gram-negative bacteria: construction of a gene bank of Rhizobium meliloti.

1980 • 2,669 citations

Physical and genetic characterization of symbiotic and auxotrophic mutants of Rhizobium meliloti induced by transposon Tn5 mutagenesis

1982 • 971 citations

A taxonomic study of the Spirillum lipoferum group, with descriptions of a new genus, Azospirillum gen. nov. and two species, Azospirillum lipoferum (Beijerinck) comb. nov. and Azospirillum brasilense sp. nov.

1978 • 808 citations

Correlation between ultrastructural differentiation of bacteroids and nitrogen fixation in alfalfa nodules

1990 • 567 citations

Transcription of glnA in E. coli is stimulated by activator bound to sites far from the promoter

1986 • 444 citations

Cascade regulation of nif gene expression in Rhizobium meliloti

1988 • 415 citations

Strong cellular preference in the expression of a housekeeping gene of Arabidopsis thaliana encoding S-adenosylmethionine synthetase.

1989 • 242 citations

Rhizobium meliloti ntrA (rpoN) gene is required for diverse metabolic functions

1987 • 241 citations

Establishment of inoculated Azospirillum spp. in the rhizosphere and in roots of field grown wheat and sorghum

1986 • 194 citations

Temporal and spatial regulation of the symbiotic genes of Rhizobium meliloti in planta revealed by transposon Tn5-gusA.

1990 • 190 citations

Analysis of regulation of Klebsiella pneumoniae nitrogen fixation (nif) gene cluster with gene fusions

1980 • 188 citations

Positive control and autogenous regulation of the nifLA promoter in Klebsiella pneumoniae

1983 • 173 citations

Establishment of inoculatedAzospirillum spp. in the rhizosphere and in roots of field grown wheat and sorghum

1986 • 173 citations

The ?24/?12 promoter comes of age

1989 • 172 citations

Identification and characterization of the Rhizobium meliloti ntrC gene: R. meliloti has separate regulatory pathways for activation of nitrogen fixation genes in free-living and symbiotic cells

1987 • 170 citations

A Rhizobium meliloti symbiotic regulatory gene

1984 • 164 citations

Nitrogen fixation gene (nifL) involved in oxygen regulation of nitrogenase synthesis in K. peumoniae

1981 • 164 citations

The nifA gene of Rhizobium meliloti is oxygen regulated

1987 • 163 citations

Transposon Mutagenesis of Azospirillum brasilense and Azospirillum lipoferum : Physical Analysis of Tn 5 and Tn 5 -Mob Insertion Mutants

1987 • 157 citations

Regulation of nitrogenase activity by ammonium chloride in Azospirillum spp

1986 • 152 citations

Regulation of nitrogen metabolism genes by nifA gene product in Klebsiella pneumoniae

1983 • 150 citations

Deletion analysis of Rhizobium meliloti symbiotic promoters

1985 • 93 citations

Cloning of a nitrogen fixation (nif) gene cluster of Azospirillum brasilense

1982 • 92 citations

Cloning of the glnA, ntrB and ntrC genes of Klebsiella pneumoniae and studies of their role in regulation of the nitrogen fixation (nif) gene cluster

1982 • 88 citations

Activation of Klebsiella pneumoniae and Rhizobium meliloti nitrogenase promoters by gln (ntr) regulatory proteins.

1983 • 77 citations

Mutations in the RNA polymerase recognition sequence of theKlebsiella pneumoniae nifHpromoter permitting transcriptional activation in the absence of NifA binding to upstream activator sequences

1989 • 70 citations

Expression and functional analysis of the Rhizobium meliloti nif A gene

1988 • 69 citations

Identification of DNA Regions Homologous to Nitrogen Fixation Genes nifE, nifUS and fixABC in Azospirillum brasilense Sp7

1989 • 64 citations

Regulation of transcription and promoter mapping of the structural genes for nitrogenase (nifHDK) of Azospirillum brasilense Sp7

1989 • 60 citations

Nucleotide sequence of the gene encoding the nitrogenase iron protein (nifH) of Azospirillum brasilense and identification of a region controlling nifH transcription

1989 • 38 citations

Effect of nitrogen compounds on nitrogenase activity inAzospirillum brasilense

1985 • 28 citations

Methods for Isolation of Auxotrophic Mutants of Methanobacterium ivanovii and Initial Characterization of Acetate Auxotrophs

1987 • 17 citations