Cyclic mononucleotide- and Clr-dependent gene regulation in Sinorhizobium meliloti
نویسندگان
چکیده
منابع مشابه
Formate-dependent autotrophic growth in Sinorhizobium meliloti.
It was found that S. meliloti strain SmA818, which is cured of pSymA, could not grow on defined medium containing only formate and bicarbonate as carbon sources. Growth experiments showed that Rm1021 was capable of formate/bicarbonate-dependent growth, suggesting that it was capable of autotrophic-type growth. The annotated genome of S. meliloti Rm1021 contains three formate dehydrogenase genes...
متن کاملAutoregulation of Sinorhizobium meliloti exoR gene expression
The successful nitrogen-fixing symbiosis between the gram-negative soil bacterium Sinorhizobium meliloti and its leguminous plant host alfalfa (Medicago sativa) requires the bacterial exopolysaccharide succinoglycan. Succinoglycan and flagellum production, along with the ability to metabolize more than 20 different carbon sources and control the expression of a large number of S. meliloti genes...
متن کاملRegulation of succinoglycan and galactoglucan biosynthesis in Sinorhizobium meliloti.
Sinorhizobium meliloti (Rhizobium meliloti) 2011 has the ability to produce the two acidic exopolysaccharides succinoglycan (EPS I) and galactoglucan (EPS II). EPS I is a branched heteropolysaccharide composed of octasaccharide repeating units, whereas EPS II is a linear heteropolysaccharide consisting of disaccharide subunits. The exo-exs and exp gene clusters are involved in the biosynthesis ...
متن کاملsinI- and expR-dependent quorum sensing in Sinorhizobium meliloti.
Quorum sensing (QS) in Sinorhizobium meliloti, the N-fixing bacterial symbiont of Medicago host plants, involves at least half a dozen different N-acyl homoserine lactone (AHL) signals and perhaps an equal number of AHL receptors. The accumulation of 55 proteins was found to be dependent on SinI, the AHL synthase, and/or on ExpR, one of the AHL receptors. Gas chromatography-mass spectrometry an...
متن کاملEnvironmental regulation of exopolysaccharide production in Sinorhizobium meliloti.
Exopolysaccharide production by Sinorhizobium meliloti is required for invasion of root nodules on alfalfa and successful establishment of a nitrogen-fixing symbiosis between the two partners. S. meliloti wild-type strain Rm1021 requires production of either succinoglycan, a polymer of repeating octasaccharide subunits, or EPS II, an exopolysaccharide of repeating dimer subunits. The reason for...
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ژورنال
عنوان ژورنال: Microbiology
سال: 2016
ISSN: 1350-0872,1465-2080
DOI: 10.1099/mic.0.000356