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Induction of the nodA promoter of Rhizobium leguminosarum Sym plasmid pRL1JI by plant flavanones and flavones

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Zaat, S A, Wijffelman, C A, Spaink, H P, van Brussel, A A, Okker, R J, Lugtenberg, B J·1987·Journal of Bacteriology

Abstract

An expression vector containing the Rhizobium leguminosarum nodA promoter cloned in front of the Escherichia coli lacZ gene was used to characterize the properties of the R. leguminosarum nodA gene-inducing compound(s) present in sterile root exudate of the host plant Vicia sativa L. subsp. nigra (L.). The major inducing compound was flavonoid in nature, most likely a flavanone. The commercially available flavonoids naringenin (5,7,4'-trihydroxyflavanone), eriodictyol (5,7,3'4'-tetrahydroxyflavanone), apigenin (5,7,4'-trihydroxyflavone), and luteolin (5,7,3',4'-tetrahydroxyflavone) induced the nodA promoter to the same level as the root exudate. On the basis of chromatographic properties, it was concluded that none of these compounds is identical to the inducer that is present in root exudate. The induction of the nodA promoter by root exudate and by the most effective inducer naringenin was very similar, as judged from the genetic requirements and the kinetics of induction.

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Metadata

Authors
Zaat, S. A., Wijffelman, C. A., Spaink, H. P., van Brussel, A. A., Okker, R. J., & Lugtenberg, B. J.
Venue
Journal of Bacteriology
Published
1987-01
Volume
169
Issue
1
Pages
198-204
ISSN
  • 0021-9193 (ISSN-L)
  • 1098-5530
OpenAlex
W1488425971
Cited by
162
References
0
FWCI
29.88
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: Induction of the nodA promoter of Rhizobium leguminosarum Sym plasmid pRL1JI by plant flavanones and flavones. https://app.cochat.ai/papers/10.1128/jb.169.1.198-204.1987
The paper
Zaat, S. A., Wijffelman, C. A., Spaink, H. P., van Brussel, A. A., Okker, R. J., & Lugtenberg, B. J. (1987). Induction of the nodA promoter of Rhizobium leguminosarum Sym plasmid pRL1JI by plant flavanones and flavones. Journal of Bacteriology. https://doi.org/10.1128/jb.169.1.198-204.1987

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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).

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