RHIZOBIUM-MELILOTI CHROMOSOMAL LOCI REQUIRED FOR SUPPRESSION OF EXOPOLYSACCHARIDE MUTATIONS BY LIPOPOLYSACCHARIDE

被引：14

作者：

WILLIAMS, MNV

HOLLINGSWORTH, RI

BRZOSKA, PM

SIGNER, ER

机构：

[1] MIT,DEPT BIOL,CAMBRIDGE,MA 02139

[2] MICHIGAN STATE UNIV,DEPT BIOCHEM,E LANSING,MI 48824

来源：

JOURNAL OF BACTERIOLOGY | 1990年 / 172卷 / 11期

关键词：

D O I：

10.1128/jb.172.11.6596-6598.1990

中图分类号：

Q93 [微生物学];

学科分类号：

071005 ; 100705 ;

摘要：

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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页码：6596 / 6598

页数：3

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