COMMON BEAN ROOT EXUDATES CONTAIN ELEVATED LEVELS OF DAIDZEIN AND COUMESTROL IN RESPONSE TO RHIZOBIUM INOCULATION

被引：48

作者：

DAKORA, FD ^{[1
]}

JOSEPH, CM ^{[1
]}

PHILLIPS, DA ^{[1
]}

机构：

[1] UNIV CALIF DAVIS, DEPT AGRON & RANGE SCI, DAVIS, CA 95616 USA

来源：

MOLECULAR PLANT-MICROBE INTERACTIONS | 1993年 / 6卷 / 05期

关键词：

D O I：

10.1094/MPMI-6-665

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：

Root exudate of common bean (Phaseolus vulgaris) inoculated with symbiotic Rhizobium leguminosarum bv. phaseoli bacteria contained more of the phytoalexin coumestrol and its isoflavonoid precursor daidzein than did exudates of uninoculated plants. Both compounds induced transcription of a nod::lacZ fusion in R. l. bv. phaseoli. Because coumestrol is elicited in bean by pathogens, these results indicate that parallel biochemical changes occur when this legume responds to symbiotic and pathogenic microbes.

引用

页码：665 / 668

页数：4

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