A putative ECF σ factor gene, rpoI, regulates siderophore production in Rhizobium leguminosarum

A putative ECF σ factor gene, rpoI, regulates siderophore production in Rhizobium leguminosarum

A cloned Rhizobium leguminosarum gene, termed rpoI, when transferred to wild-type strains, caused overproduction of the siderophore vicibactin. An rpoI mutant was defective in Fe uptake but was unaffected in symbiotic N 2 fixation. The RpoI gene product was similar in sequence to extra-cytoplasmic σ...

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Veröffentlicht in:Molecular plant-microbe interactions 1999-11, Vol.12 (11), p.994-999
Hauptverfasser: YEOMAN, K. H, MAY, A. G, DELUCA, N. G, STUCKEY, D. B, JOHNSTON, A. W. B
Format: Artikel
Sprache:eng
Schlagworte:
Bacteriology
Biological and medical sciences
ccm
Fundamental and applied biological sciences. Psychology
Genetics
Microbiology
nodules
peas
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Zusammenfassung:A cloned Rhizobium leguminosarum gene, termed rpoI, when transferred to wild-type strains, caused overproduction of the siderophore vicibactin. An rpoI mutant was defective in Fe uptake but was unaffected in symbiotic N 2 fixation. The RpoI gene product was similar in sequence to extra-cytoplasmic σ factors of RNA polymerase. Transcription of rpoI was reduced in cells grown in medium that was replete with Fe.
ISSN:0894-0282
1943-7706
DOI:10.1094/MPMI.1999.12.11.994