RETARDATION OF SENESCENCE BY UV-A LIGHT IN BARLEY (HORDEUM-VULGARE L) LEAF SEGMENTS

被引：5

作者：

CUELLO, J ^{[1
]}

SANCHEZ, MD ^{[1
]}

SABATER, B ^{[1
]}

机构：

[1] UNIV ALCALA DE HENARES, DEPT BIOL VEGETAL, E-28871 MADRID, SPAIN

来源：

ENVIRONMENTAL AND EXPERIMENTAL BOTANY | 1994年 / 34卷 / 01期

关键词：

CHLOROPLASTS; HORDEUM VULGARE; SENESCENCE; ULTRAVIOLET LIGHT;

D O I：

10.1016/0098-8472(94)90002-7

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

The effects of low intensity (0.9-2.2 W m(-2)) UV-A radiation on barley leaf senescence were investigated. UV-A inhibited chlorophyll loss and caused increases in membrane permeability and chloroplast endopeptidases associated with senescence. The treatment of leaf segments with UV-A changed the type of proteins synthesized by chloroplasts, stimulating the synthesis of some specific polypeptides. It is concluded that the senescence of detached leaves provides an appropriate system for investigating effects of low UV-A intensities which are probably mediated by synthesis of specific proteins.

引用

页码：1 / 8

页数：8

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