SYMBIOTIC HOST-SPECIFICITY BETWEEN LEGUMINOUS PLANTS AND RHIZOBIA IS DETERMINED BY SUBSTITUTED AND ACYLATED GLUCOSAMINE OLIGOSACCHARIDE SIGNALS

被引:42
作者
LEROUGE, P
机构
关键词
NODULATION FACTOR; NODULE ORGANOGENESIS; PLANT-MICROBE INTERACTION; SYMBIOSIS;
D O I
10.1093/glycob/4.2.127
中图分类号
Q5 [生物化学]; Q7 [分子生物学];
学科分类号
071010 ; 081704 ;
摘要
Rhizobia are nitrogen-fixing bacteria which invade root hairs of leguminous plants and induce, in a specific manner, the formation of root nodules in which they fix nitrogen. The early steps of the symbiosis can be considered as a reciprocal molecular communication between the two partners. Initially, the plant excretes a gene inducer which stimulates the expression of bacterial nodulation genes. These nodulation genes are responsible for the synthesis of extracellular host-specific signals, called nodulation factors. The bacterial nodulation factors were isolated and structurally identified as substituted and N-acylated chitin oligosaccharides. These prokaryotic lipo-oligosaccharide signals play a key role in the symbiosis by controlling the host specificity of the bacteria. They constitute a new class of signalling molecules able to elicit nodule organogenesis in leguminous plants in the absence of bacteria.
引用
收藏
页码:127 / 134
页数:8
相关论文
共 56 条
[1]   OLIGOSACCHARINS [J].
ALBERSHEIM, P ;
DARVILL, AG .
SCIENTIFIC AMERICAN, 1985, 253 (03) :58-&
[2]   RHIZOBIUM-JAPONICUM USDA 191 HAS 2 NODD GENES THAT DIFFER IN PRIMARY STRUCTURE AND FUNCTION [J].
APPELBAUM, ER ;
THOMPSON, DV ;
IDLER, K ;
CHARTRAIN, N .
JOURNAL OF BACTERIOLOGY, 1988, 170 (01) :12-20
[3]  
BARBOUR WM, 1992, BIOL NITROGEN FIXATI, P645
[4]  
BECFERTE MP, 1993, CURR PLANT SCI BIOT, V17, P157
[5]   CHITIN AND NODULATION [J].
BULAWA, CE ;
WASCO, W .
NATURE, 1991, 353 (6346) :710-710
[6]  
CARLSON RW, 1993, J BIOL CHEM, V268, P18372
[7]  
CREMERS HCJ, 1986, J PLANT PHYSIOL, V122, P25, DOI 10.1016/S0176-1617(86)80082-7
[8]   PHYTOALEXINS AND THEIR ELICITORS - A DEFENSE AGAINST MICROBIAL INFECTION IN PLANTS [J].
DARVILL, AG ;
ALBERSHEIM, P .
ANNUAL REVIEW OF PLANT PHYSIOLOGY AND PLANT MOLECULAR BIOLOGY, 1984, 35 :243-275
[9]   THE RHIZOBIUM, BRADYRHIZOBIUM, AND AZORHIZOBIUM NODC PROTEINS ARE HOMOLOGOUS TO YEAST CHITIN SYNTHASES [J].
DEBELLE, F ;
ROSENBERG, C ;
DENARIE, J .
MOLECULAR PLANT-MICROBE INTERACTIONS, 1992, 5 (05) :443-446
[10]   NUCLEOTIDE-SEQUENCE OF RHIZOBIUM-MELILOTI RCR2011 GENES INVOLVED IN HOST SPECIFICITY OF NODULATION [J].
DEBELLE, F ;
SHARMA, SB .
NUCLEIC ACIDS RESEARCH, 1986, 14 (18) :7453-7472