Skip to main page content
U.S. flag

An official website of the United States government

Dot gov

The .gov means it’s official.
Federal government websites often end in .gov or .mil. Before sharing sensitive information, make sure you’re on a federal government site.

Https

The site is secure.
The https:// ensures that you are connecting to the official website and that any information you provide is encrypted and transmitted securely.

Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
. 1990 May;172(5):2622-32.
doi: 10.1128/jb.172.5.2622-2632.1990.

The symbiotic defect of Rhizobium meliloti exopolysaccharide mutants is suppressed by lpsZ+, a gene involved in lipopolysaccharide biosynthesis

M N Williams  1 , R I Hollingsworth, S Klein, E R Signer
Affiliations

The symbiotic defect of Rhizobium meliloti exopolysaccharide mutants is suppressed by lpsZ+, a gene involved in lipopolysaccharide biosynthesis

M N Williams et al. J Bacteriol. 1990 May.

Abstract

exo mutants of Rhizobium meliloti SU47, which fail to secrete acidic extracellular polysaccharide (EPS), induce Fix- nodules on alfalfa. However, mutants of R. meliloti Rm41 carrying the same exo lesions induce normal Fix+ nodules. We show that such induction is due to a gene from strain Rm41, which we call lpsZ+, that is missing in strain SU47. lpsZ+ does not restore EPS production but instead alters the composition and structure of lipopolysaccharide. In both SU47 and Rm41, either lpsZ+ or exo+ is sufficient for normal nodulation. This suggests that in R. meliloti EPS and lipopolysaccharide can perform the same function in nodule development.

PubMed Disclaimer

Similar articles

See all similar articles

Cited by

See all "Cited by" articles

References

    1. J Bacteriol. 1987 Nov;169(11):4923-8 - PubMed
    1. Proc Natl Acad Sci U S A. 1985 Sep;82(18):6231-5 - PubMed
    1. Cell. 1989 Feb 24;56(4):661-72 - PubMed
    1. J Bacteriol. 1989 Sep;171(9):4821-30 - PubMed
    1. Appl Environ Microbiol. 1989 Dec;55(12):3229-30 - PubMed

Publication types

Substances

LinkOut - more resources