DIFFERENTIAL EXPRESSION OF PHENYLALANINE AMMONIA-LYASE AND CHALCONE SYNTHASE DURING SOYBEAN NODULE DEVELOPMENT

被引：99

作者：

ESTABROOK, EM ^{[1
]}

SENGUPTAGOPALAN, C ^{[1
]}

机构：

[1] NEW MEXICO STATE UNIV, DEPT AGRON & HORT,MOLEC BIOL PROGRAM, PLANT GENET ENGN LAB,BOX 3GL, LAS CRUCES, NM 88003 USA

来源：

PLANT CELL | 1991年 / 3卷 / 03期

关键词：

D O I：

10.1105/tpc.3.3.299

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：

We have used conserved and nonconserved regions of cDNA clones for phenylalanine ammonia-lyase (PAL) and chalcone synthase (CHS) isolated from a soybean-nodule cDNA library to monitor the expression of members of the two gene families during the early stages of the soybean-Bradyrhizobium japonicum symbiosis. Our results demonstrate that subsets of the PAL and CHS gene families are specifically induced in soybean roots after infection with B. japonicum. Furthermore, by analyzing a supernodulating mutant line of soybean that differs from the wild-type parent in the number of successful infections, we show that the induction of PAL and CHS is related to postinfection events. Nodulated roots formed by a Nod+ Fix- strain of B. japonicum, resembling a pathogenic association, display induction of another distinct set of PAL and CHS genes. Our results suggest that the symbiosis-specific PAL and CHS genes in soybean are not induced by stress or pathogen interaction.

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页码：299 / 308

页数：10

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