Effects of 2,4-dihydroxy-1,4-benzoxazin-3-ones on the activity of plasma membrane H+-ATPase

被引：57

作者：

Friebe, A ^{[1
]}

Roth, U ^{[1
]}

Kuck, P ^{[1
]}

Schnabl, H ^{[1
]}

Schulz, M ^{[1
]}

机构：

[1] UNIV BONN, INST LANDWIRTSCH BOT, D-53115 BONN, GERMANY

来源：

PHYTOCHEMISTRY | 1997年 / 44卷 / 06期

关键词：

Avena sativa; Vicia faba; allelopathy; plasma-membrane; Hi-ATPase; 2,4-dihydroxy-1,4-benzoxazin-3-one; DIBOA; DIMBOA; 2(3H)-benzoxazolinone; BOA;

D O I：

10.1016/S0031-9422(96)00677-2

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 action of 2,4-dihydroxy-1,4-benzoxazin-3-ones and their corresponding benzoxazolinone (BOA) derivatives on the activity of plasma membrane H+-ATPase from roots of Avena sativa and Vicia faba was investigated. Significant inhibitory effects were found with 2,4-dihydroxy-1,4-benzoxazin-3-one (DIBOA) and 2,4-dihydroxy-7-methoxy-1,4-benzoxazin-3-one in concentrations of 0.25 mM or higher. Benzoxazolinone compounds caused a weaker inhibition of the enzyme. At low effector concentrations stimulatory effects were observed. The H+-ATPase activity of A. sativa and V. faba was reduced by DIBOA to the same extent. The allelopathic effects of DIBOA and BOA on radicle elongation of A. sativa are correlated with the H+-ATPase activity. Copyright (C) 1997 Elsevier Science Ltd.

引用

页码：979 / 983

页数：5

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