Literature DB >> 2228976

Rhizobium meliloti chromosomal loci required for suppression of exopolysaccharide mutations by lipopolysaccharide.

M N Williams1, R I Hollingsworth, P M Brzoska, E R Signer.   

Abstract

Mutants of alfalfa symbiont Rhizobium meliloti SU47 that fail to make extracellular polysaccharide (exo mutants) induce the formation of nodules that are devoid of bacteria and consequently do not fix nitrogen. This Fix- phenotype can be suppressed by an R. meliloti Rm41 gene that affects lipopolysaccharide structure. Here we describe mutations preventing suppression that map at two new chromosomal loci, lpsY and lpsX, present in both strains. Two other lps mutations isolated previously from SU47 also prevented suppression.

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Year:  1990        PMID： 2228976      PMCID： PMC526852          DOI： 10.1128/jb.172.11.6596-6598.1990

Source DB:  PubMed          Journal:  J Bacteriol        ISSN： 0021-9193            Impact factor:   3.490


  13 in total

1.  Symbiotic mutants of Rhizobium meliloti that uncouple plant from bacterial differentiation.

Authors:  T M Finan; A M Hirsch; J A Leigh; E Johansen; G A Kuldau; S Deegan; G C Walker; E R Signer
Journal:  Cell       Date:  1985-04       Impact factor: 41.582

2.  A second exopolysaccharide of Rhizobium meliloti strain SU47 that can function in root nodule invasion.

Authors:  H J Zhan; S B Levery; C C Lee; J A Leigh
Journal:  Proc Natl Acad Sci U S A       Date:  1989-05       Impact factor: 11.205

3.  Mutations in Rhizobium phaseoli that lead to arrested development of infection threads.

Authors:  K D Noel; K A Vandenbosch; B Kulpaca
Journal:  J Bacteriol       Date:  1986-12       Impact factor: 3.490

4.  Positive selection of nodulation-deficient Rhizobium phaseoli.

Authors:  E A Raleigh; E R Signer
Journal:  J Bacteriol       Date:  1982-07       Impact factor: 3.490

5.  Lipopolysaccharide mutants of Rhizobium meliloti are not defective in symbiosis.

Authors:  R H Clover; J Kieber; E R Signer
Journal:  J Bacteriol       Date:  1989-07       Impact factor: 3.490

6.  Genetic manipulations in Rhizobium meliloti utilizing two new transposon Tn5 derivatives.

Authors:  G F De Vos; G C Walker; E R Signer
Journal:  Mol Gen Genet       Date:  1986-09

7.  Second symbiotic megaplasmid in Rhizobium meliloti carrying exopolysaccharide and thiamine synthesis genes.

Authors:  T M Finan; B Kunkel; G F De Vos; E R Signer
Journal:  J Bacteriol       Date:  1986-07       Impact factor: 3.490

8.  A novel exopolysaccharide can function in place of the calcofluor-binding exopolysaccharide in nodulation of alfalfa by Rhizobium meliloti.

Authors:  J Glazebrook; G C Walker
Journal:  Cell       Date:  1989-02-24       Impact factor: 41.582

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

Authors:  M N Williams; R I Hollingsworth; S Klein; E R Signer
Journal:  J Bacteriol       Date:  1990-05       Impact factor: 3.490

10.  Rhizobium fix genes mediate at least two communication steps in symbiotic nodule development.

Authors:  P Putnoky; E Grosskopf; D T Ha; G B Kiss; A Kondorosi
Journal:  J Cell Biol       Date:  1988-03       Impact factor: 10.539
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  6 in total

1.  lpsZ, a lipopolysaccharide gene involved in symbiosis of Rhizobium meliloti.

Authors:  P M Brzoska; E R Signer
Journal:  J Bacteriol       Date:  1991-05       Impact factor: 3.490

2.  The "missing" typical Rhizobium leguminosarum O antigen is attached to a fatty acylated glycerol in R. leguminosarum bv. trifolii 4S, a strain that also lacks the usual tetrasaccharide "core" component.

Authors:  R A Cedergren; Y Wang; R I Hollingsworth
Journal:  J Bacteriol       Date:  1996-09       Impact factor: 3.490

3.  A Rhizobium meliloti lipopolysaccharide mutant altered in competitiveness for nodulation of alfalfa.

Authors:  A Lagares; G Caetano-Anollés; K Niehaus; J Lorenzen; H D Ljunggren; A Pühler; G Favelukes
Journal:  J Bacteriol       Date:  1992-09       Impact factor: 3.490

4.  Different phenotypic classes of Sinorhizobium meliloti mutants defective in synthesis of K antigen.

Authors:  G R Campbell; B L Reuhs; G C Walker
Journal:  J Bacteriol       Date:  1998-10       Impact factor: 3.490

5.  Suppression of the Fix- phenotype of Rhizobium meliloti exoB mutants by lpsZ is correlated to a modified expression of the K polysaccharide.

Authors:  B L Reuhs; M N Williams; J S Kim; R W Carlson; F Côté
Journal:  J Bacteriol       Date:  1995-08       Impact factor: 3.490

6.  Rhizobium fredii and Rhizobium meliloti produce 3-deoxy-D-manno-2-octulosonic acid-containing polysaccharides that are structurally analogous to group II K antigens (capsular polysaccharides) found in Escherichia coli.

Authors:  B L Reuhs; R W Carlson; J S Kim
Journal:  J Bacteriol       Date:  1993-06       Impact factor: 3.490
  6 in total

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