ETHYLENE-ENHANCED CATABOLISM OF [C-14] INDOLE-3-ACETIC-ACID TO INDOLE-3-CARBOXYLIC ACID IN CITRUS LEAF TISSUES

被引：22

作者：

SAGEE, O ^{[1
]}

RIOV, J ^{[1
]}

GOREN, R ^{[1
]}

机构：

[1] HEBREW UNIV JERUSALEM,FAC AGR,DEPT HORT,IL-76100 REHOVOT,ISRAEL

来源：

PLANT PHYSIOLOGY | 1990年 / 92卷 / 01期

关键词：

D O I：

10.1104/pp.92.1.54

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

Exogenous [14C]indole-3-acetic acid (IAA) is conjugated in citrus (Citrus sinensis) leaf tissues to one major substance which has been identified as indole-3-acetylaspartic acid (IAAsp). Ethylene pretreatment enhanced the catabolism of [14C]IAA to indole3-carboxylic acid (ICA), which accumulated as glucose esters (ICGIu). Increased formation of ICGIu by ethylene was accompanied by a concomitant decrease in IAAsp formation. IAAsp and ICGIu were identified by combined gas chromatography-mass spectrometry. Formation of ICGIu was dependent on the concentration of ethylene and the duration of the ethylene pretreatment. It is suggested that the catabolism of IAA to ICA may be one of the mechanisms by which ethylene reduces endogenous IAA levels.

引用

页码：54 / 60

页数：7

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