Promotion of nod gene inducers and nodulation in common bean (Phaseolus vulgaris) roots inoculated with Azospirillum brasilense Cd

Saul Burdman, Hanne Volpin, Jaijvle Kigel, Yoram Kapulnik, Yaacov Okon*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

67 Scopus citations

Abstract

Inoculation of phaseolus vulgaris with Azospirillum brasilense Cd promoted root hair formation in seedling roots and significantly increased total and upper nodule numbers at different concentrations of Rhizobium inoculum. In experiments carried out in a hydroponic system, A. brasilense caused an increase in the secretion of nod gene-inducing flavonoids, as was observed by nod gene induction assays of root exudates fractionated by high- performance liquid chromatography. Possible mechanisms involved in the influence of A. brasilense on this symbiotic system are discussed.

Original languageAmerican English
Pages (from-to)3030-3033
Number of pages4
JournalApplied and Environmental Microbiology
Volume62
Issue number8
DOIs
StatePublished - Aug 1996

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