The role of the nodI and nodJ genes in the transport of Nod metabolites in Rhizobium etli

被引:19
作者
Cardenas, L [1 ]
Dominguez, J [1 ]
Santana, O [1 ]
Quinto, C [1 ]
机构
[1] UNIV NACL AUTONOMA MEXICO, INST BIOTECNOL, DEPT BIOL MOL PLANTAS, CUERNAVACA 62271, MORELOS, MEXICO
关键词
nodulation; symbiosis; naringenin; membrane transporters; secretion;
D O I
10.1016/0378-1119(96)00166-7
中图分类号
Q3 [遗传学];
学科分类号
071007 ; 090102 ;
摘要
A kinetic analysis of secretion of lipo-chitin oligosaccharides (LCO) produced by Rhizobium etli (Re) wild-type (wt) strain and derivatives carrying disrupted nodI or nodJ genes was performed. LCO were detected in the growth media of the wt strain as early as 1 h after nod gene induction. In contrast strains carrying nodI or nodJ mutations secreted less LCO, and accumulated LCO metabolites intracellularly after 4 h of induction, These Re mutants presented a delayed nodulation phenotype and a reduction in the maximum number of nodules formed in Phaseolus vulgaris roots.
引用
收藏
页码:183 / 187
页数:5
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