INTERACTION OF FREE INDOLE-3-ACETIC-ACID AND ITS AMINO-ACID CONJUGATES IN TOMATO HYPOCOTYL CULTURES

被引：20

作者：

MAGNUS, V

HANGARTER, RP

GOOD, NE

机构：

[1] OHIO STATE UNIV, DEPT PLANT BIOL, COLUMBUS, OH 43210 USA

[2] MICHIGAN STATE UNIV, DEPT BOT & PLANT PATHOL, E LANSING, MI 48824 USA

来源：

JOURNAL OF PLANT GROWTH REGULATION | 1992年 / 11卷 / 02期

关键词：

D O I：

10.1007/BF00198017

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

The interaction of free IAA and its amino acid conjugates on growth and development of cultured tomato hypocotyl tissue (Lycopersicon esculentum Mill. cv. Marglobe) was studied. In a nutrient medium containing 10-mu-mol/L of benzyladenine, free IAA stimulated shoot and root development with little callus proliferation. In contrast, all IAA-amino acid conjugates tested supported mostly callus growth. Simultaneous application of free IAA and its conjugates resulted in the expression of mixed morphogenetic responses (i.e., both vigorous callus growth and organogenesis resulted). Growth kinetics and the effect of temporal exposure of the tissues to the bound and the free auxin suggest that some IAA-amino acid conjugates may specifically influence plant morphogenesis in ways that cannot be easily explained as simply a function of their slow hydrolysis to release free IAA.

引用

页码：67 / 75

页数：9

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