Cyclic-ß-glucans of Rhizobium (Sinorhizobium) sp. strain NGR234 are required for hypo-osmotic adaptation, motility, and efficient symbiosis with host plants.
FEMS Microbiol Lett
; 333(1): 28-36, 2012 Aug.
Article
in En
| MEDLINE
| ID: mdl-22583376
ABSTRACT
Cyclic-ß-glucans (CßG) consist of cyclic homo-polymers of glucose that are present in the periplasmic space of many Gram-negative bacteria. A number of studies have demonstrated their importance for bacterial infection of plant and animal cells. In this study, a mutant of Rhizobium (Sinorhizobium) sp. strain NGR234 (NGR234) was generated in the cyclic glucan synthase (ndvB)-encoding gene. The great majority of CßG produced by wild-type NGR234 are negatively charged and substituted. The ndvB mutation abolished CßG biosynthesis. We found that, in NGR234, a functional ndvB gene is essential for hypo-osmotic adaptation and swimming, attachment to the roots, and efficient infection of Vigna unguiculata and Leucaena leucocephala.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Symbiosis
/
Adaptation, Physiological
/
Sinorhizobium
/
Beta-Glucans
/
Root Nodules, Plant
Language:
En
Journal:
FEMS Microbiol Lett
Year:
2012
Document type:
Article
Affiliation country: