A POLYPEPTIDE FROM TOMATO LEAVES INDUCES WOUND-INDUCIBLE PROTEINASE-INHIBITOR PROTEINS

被引：781

作者：

PEARCE, G ^{[1
]}

STRYDOM, D ^{[1
]}

JOHNSON, S ^{[1
]}

RYAN, CA ^{[1
]}

机构：

[1] HARVARD UNIV,SCH MED,CTR BIOCHEM & BIOPHYS SCI & MED,BOSTON,MA 02115

来源：

SCIENCE | 1991年 / 253卷 / 5022期

关键词：

D O I：

10.1126/science.253.5022.895

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

Defensive genes in plants can be activated by several different types of nonpeptide signaling molecules. An endogenous polypeptide, consisting of 18 amino acids, was isolated from tomato leaves and was able at very low concentrations to induce the synthesis of two wound-inducible proteinase inhibitor proteins when supplied to young tomato plants. The sequence of the polypeptide was determined, and an identical polypeptide was synthesized that possessed full inducing activity. These data establish that a polypeptide factor can initiate signal transduction to regulate the synthesis of defensive proteins in plant tissues.

引用

页码：895 / 898

页数：4

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