NDLI: Identification of a novel ABC transporter required for desiccation tolerance, and biofilm formation in Rhizobium leguminosarum bv. viciae 3841

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Identification of a novel ABC transporter required for desiccation tolerance, and biofilm formation in Rhizobium leguminosarum bv. viciae 3841

Content Provider	PubMed Central
Author	Vanderlinde, Elizabeth M. Harrison, Joe J. Artur, Muszyński Carlson, Russell W. Turner, Raymond J. Yost, Christopher K.
Editor	Philippe, Lemanceau
Copyright Year	2009
Abstract	Rhizobium leguminosarum is a soil bacterium with the ability to form nitrogen-fixing nodules on the roots of leguminous plants. Soil-dwelling, free-living R. leguminosarum often encounters desiccation stress, which impacts its survival within the soil. The mechanisms by which soil bacteria resist the effects of desiccation stress have been described. However, the role of the cell envelope in the desiccation tolerance mechanisms of rhizobia is relatively uncharacterized. Using a transposon mutagenesis approach, a mutant of R. leguminosarum bv. viciae was isolated that was highly sensitive to desiccation. The mutation is located in the ATP-binding protein of an uncharacterized ATP-binding cassette transporter operon (RL2975–RL2977). Exopolysaccharide accumulation was significantly lower in the mutant and the decrease in desiccation tolerance was attributed to the decreased accumulation of exopolysaccharide. In addition to desiccation sensitivity, the mutant was severely impaired in biofilm formation, an important adaptation used by soil bacteria for survival. This work has identified a novel transporter required for physiological traits that are important for the survival of R. leguminosarum in the rhizosphere environment.
Related Links	http://dx.doi.org/10.1111/j.1574-6941.2009.00824.x
Ending Page	340
Page Count	14
Starting Page	327
File Format	PDF
ISSN	01686496
e-ISSN	15746941
Journal	FEMS microbiology ecology
Issue Number	3
Volume Number	71
Language	English
Publisher Date	2010-03-01
Access Restriction	Open
Subject Keyword	Ecology Applied Microbiology and Biotechnology Microbiology Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Ecology Microbiology Applied Microbiology and Biotechnology

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