Interspecies homology of nodulation genes in Rhizobium

Francisco Rodriguez-Quinones, Z. Bánfalvi, Peter Murphy, Adam Kondorosi

Research output: Contribution to journalArticle

19 Citations (Scopus)

Abstract

The internal structural portion of genes nodC and nodD (representatives of the two transcription units coding for common nodulation functions) and of hsnB and hsnD (genes from the two transcription units determining host-specificity of nodulation) have been cloned from Rhizobium meliloti into M13 vectors and used as probes against genomic DNAs from different Rhizobium strains and species. nodC and nodD were found in all species with one exception, indicating that they are common and widely spread genes, though the nodD gene hybridized only very weakly with slow-growing rhizobia. Interestingly, reiteration of nodD sequences was observed in almost all fast-growing strains (with the exception of R. leguminosarum). hsnB and, more so, hsnD are present only in a few species tested, supporting their specific involvement in R. meliloti-Medicago sativa symbiosis. In several cases the hybridizing bands from total Rhizobium DNA were compared to those found in recombinant plasmids carrying functional nodulation regions, and these analyses supported the notion that the bands indicate the presence of functional genes.

Original languageEnglish
Pages (from-to)61-75
Number of pages15
JournalPlant Molecular Biology
Volume8
Issue number1
DOIs
Publication statusPublished - Jan 1987

Fingerprint

Rhizobium
nodulation
Genes
Sinorhizobium meliloti
Ensifer meliloti
Transcription
genes
transcription (genetics)
fast growing strains
Symbiosis
Medicago sativa
Host Specificity
DNA
host specificity
symbiosis
plasmids
Plasmids
genomics

Keywords

  • host-specific nodulation genes
  • nod gene homology
  • Rhizobium
  • symbiotic genes

ASJC Scopus subject areas

  • Biochemistry
  • Biochemistry, Genetics and Molecular Biology(all)

Cite this

Interspecies homology of nodulation genes in Rhizobium. / Rodriguez-Quinones, Francisco; Bánfalvi, Z.; Murphy, Peter; Kondorosi, Adam.

In: Plant Molecular Biology, Vol. 8, No. 1, 01.1987, p. 61-75.

Research output: Contribution to journalArticle

Rodriguez-Quinones, F, Bánfalvi, Z, Murphy, P & Kondorosi, A 1987, 'Interspecies homology of nodulation genes in Rhizobium', Plant Molecular Biology, vol. 8, no. 1, pp. 61-75. https://doi.org/10.1007/BF00016435
Rodriguez-Quinones, Francisco ; Bánfalvi, Z. ; Murphy, Peter ; Kondorosi, Adam. / Interspecies homology of nodulation genes in Rhizobium. In: Plant Molecular Biology. 1987 ; Vol. 8, No. 1. pp. 61-75.
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