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Article

ndvF, a novel locus located on megaplasmid pRmeSU47b (pEXO) of Rhizobium meliloti, is required for normal nodule development.

Journal of bacteriology - 1 Jul 1991

Charles T C, Newcomb W, Finan T M

Abstract excerpt

Rhizobium meliloti strains carrying either of two overlapping deletions (delta 5408 and delta F114) of the megaplasmid pRmeSU47b form nodules on alfalfa which fail to fix N2 (Fix-). Strains carrying these deletions also fail to fluoresce on media containing calcofluor, indicating a defect in synt...

Topics

Chromosome Mapping
Cloning, Molecular
Cosmids
DNA Transposable Elements
Genes, Bacterial
Genetic Linkage
Genetic Markers
Medicago sativa
Mutagenesis, Site-Directed
Nitrogen Fixation
Phenotype
Plasmids

Methodology Data sources Editorial policy Privacy About Contact Helena Bioinformatics

Polysaccharides, Bacterial

Rhizobium

Symbiosis

Source

Open in PubMed Open full text

Identifiers

PMID: 1648074
DOI: 10.1128/jb.173.13.3981-3992.1991
PMCID: PMC208044

Provenance

PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 30 Aug 2026. Prepared record publication-1648074-2026-08-30.1. Manifest publication-graph-cohort-2026-08-30.1.

Source receipt: PubMed via Helena Literature Corpus, retrieved 30 Aug 2026.

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ndvF, a novel locus located on megaplasmid pRmeSU47b (pEXO) of Rhizobium meliloti, is required for normal nodule development.PMID 1648074Read ↗

Second site mutations specifically suppress the Fix- phenotype of Rhizobium meliloti ndvF mutations on alfalfa: identification of a conditional ndvF-dependent mucoid colony phenotype.Semantic proximity Read ↗

A phosphate transport system is required for symbiotic nitrogen fixation by Rhizobium meliloti.Semantic proximity Read ↗

Acidic conditions permit effective nodulation of alfalfa by invasion-deficient Rhizobium meliloti exoD mutants.Semantic proximity Read ↗

Symbiotic nitrogen fixation by a nifA deletion mutant of Rhizobium meliloti: the role of an unusual ntrC allele.Semantic proximity Read ↗

Regulation of phosphate assimilation in Rhizobium (Sinorhizobium) meliloti.Semantic proximity Read ↗

Genetic analyses of Rhizobium meliloti exopolysaccharides.Semantic proximity Read ↗

The exoD gene of Rhizobium meliloti encodes a novel function needed for alfalfa nodule invasion.Semantic proximity Read ↗

Two plasmids other than the nodulation plasmid are necessary for formation of nitrogen-fixing nodules by Rhizobium leguminosarum.Semantic proximity Read ↗

The symbiotic defect of Rhizobium meliloti exopolysaccharide mutants is suppressed by lpsZ+, a gene involved in lipopolysaccharide biosynthesis.Semantic proximity Read ↗

Rhizobium meliloti chromosomal loci required for suppression of exopolysaccharide mutations by lipopolysaccharide.Semantic proximity Read ↗

Cloning and characterization of Rhizobium meliloti loci required for symbiotic root nodule invasion.Semantic proximity Read ↗

Suppression of the ndv mutant phenotype of Rhizobium meliloti by cloned exo genes.Semantic proximity Read ↗

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