DOI: 10.1128/jb.180.4.815-821.1998. luxI - and luxR -Homologous Genes of Rhizobium etli CNPAF512 Contribute to Synthesis of Autoinducer Molecules and Nodulation of Phaseolus vulgaris

luxI - and luxR -Homologous Genes of Rhizobium etli CNPAF512 Contribute to Synthesis of Autoinducer Molecules and Nodulation of Phaseolus vulgaris

10.1128/jb.180.4.815-821.1998

Crossref journal-article

American Society for Microbiology

Journal of Bacteriology (235)

Abstract

ABSTRACT Autoinduction plays an important role in intercellular communication among symbiotic and pathogenic gram-negative bacteria. We report here that a nitrogen-fixing symbiont of Phaseolus vulgaris , Rhizobium etli CNPAF512, produces at least seven different autoinducer molecules. One of them exhibits a growth-inhibitory effect like that of the bacteriocin small [ N -(3 R -hydroxy-7- cis -tetradecanoyl)- l -homoserine lactone]. At least two of the other autoinducers are synthesized by a LuxI-homologous autoinducer synthase. The corresponding luxI homologous gene ( raiI ) and a luxR homolog ( raiR ) have been identified and characterized. Enhanced expression of raiI is dependent on cell density and on the presence of one or more autoinducer molecules synthesized by R. etli CNPAF512. A raiI mutant was shown to release only three different autoinducer molecules; a raiR mutant releases four different autoinducer molecules. Examination of different mutants for nodulation of beans showed that raiI is involved in the restriction of nodule number, whereas nitrogen-fixing activity in terms of acetylene reduction per nodule was not affected.

Bibliography

Rosemeyer, V., Michiels, J., Verreth, C., & Vanderleyden, J. (1998). luxI - and luxR -Homologous Genes of Rhizobium etli CNPAF512 Contribute to Synthesis of Autoinducer Molecules and Nodulation of Phaseolus vulgaris. Journal of Bacteriology, 180(4), 815â821.

Authors 4

Viola Rosemeyer (first)
Jan Michiels (additional)
Christel Verreth (additional)
Jos Vanderleyden (additional)

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Dates

Type	When
Created	5 years, 7 months ago (Dec. 31, 2019, 11:31 a.m.)
Deposited	4 years, 1 month ago (July 29, 2021, 2:25 p.m.)
Indexed	3 weeks, 1 day ago (Aug. 7, 2025, 4:59 p.m.)
Issued	27 years, 6 months ago (Feb. 15, 1998)
Published	27 years, 6 months ago (Feb. 15, 1998)
Published Print	27 years, 6 months ago (Feb. 15, 1998)

Funders 0

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BibTeX

@article{Rosemeyer_1998, title={luxI - and luxR -Homologous Genes of Rhizobium etli CNPAF512 Contribute to Synthesis of Autoinducer Molecules and Nodulation of Phaseolus vulgaris}, volume={180}, ISSN={1098-5530}, url={http://dx.doi.org/10.1128/jb.180.4.815-821.1998}, DOI={10.1128/jb.180.4.815-821.1998}, number={4}, journal={Journal of Bacteriology}, publisher={American Society for Microbiology}, author={Rosemeyer, Viola and Michiels, Jan and Verreth, Christel and Vanderleyden, Jos}, year={1998}, month=feb, pages={815–821} }

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