SPECIFIC ACTIVATION OF SOYBEAN DEFENSE GENES BY THE PHOSPHOPROTEIN PHOSPHATASE INHIBITOR OKADAIC ACID

被引：18

作者：

GIANFAGNA, TJ ^{[1
]}

LAWTON, MA ^{[1
]}

机构：

[1] RUTGERS STATE UNIV,AGR BIOTECHNOL CTR,NEW BRUNSWICK,NJ 08903

来源：

PLANT SCIENCE | 1995年 / 109卷 / 02期

关键词：

OKADAIC ACID; ENZYME INDUCTION; PLANT DEFENSE RESPONSE;

D O I：

10.1016/0168-9452(95)04162-N

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：

The protein phosphatase inhibitor, okadaic acid (OKA) increased phenylalanine ammonia lyase (PAL) activity by 30-fold in soybean (Glycine max L.) cell suspension cultures. The increase in PAL activity was preceded by an increase in PAL mRNA. In addition, mRNA for chalcone synthase and a hydroxyproline-rich glycoprotein also increased concomitantly with PAL mRNA. In contrast, mRNA levels for the cytoskeletal proteins tubulin and actin, decreased in response to OKA treatment. The induction of the typical transcriptionally activated plant defense response to pathogens by OKA, suggests that the signal transduction pathway includes a protein phosphorylation cascade in which a protein phosphatase plays a key role.

引用

页码：165 / 170

页数：6

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