Pretreatment with 5-aminolevulinic acid mitigates heat stress of cucumber leaves

被引：69
|
作者：
Zhang, J. [1 ]
Li, D. -M. [1 ]
Gao, Y. [1 ]
Yu, B. [1 ]
Xia, C. -X. [2 ]
Bai, J. -G. [1 ]
机构：
[1] Shandong Agr Univ, State Key Lab Crop Biol, Coll Life Sci, Tai An 271018, Shandong, Peoples R China
[2] Shandong Agr Univ, Coll Food Sci & Engn, Tai An 271018, Shandong, Peoples R China
来源：
BIOLOGIA PLANTARUM | 2012年 / 56卷 / 04期
关键词：
5-aminolevulinic acid; antioxidant enzyme; Cucumis sativus; heat; proline; soluble sugar; SUPEROXIDE-DISMUTASE; ANTIOXIDANT ENZYMES; LIPID-PEROXIDATION; TOLERANCE; ULTRASTRUCTURE; INCREASE; L; CHLOROPLASTS; GLUTATHIONE; CULTIVARS;
D O I：
10.1007/s10535-012-0136-9
中图分类号：
Q94 [植物学];
学科分类号：
071001 ;
摘要：
Cucumber seedlings were pretreated with 3 mu M 5-aminolevulinic acid (ALA) followed by cultivation at normal (25/18 A degrees C) or high (42/38 A degrees C) day/night temperature to investigate the protective effects of ALA on heat stress in plants. Heat elevated the contents of malondiadehyde (MDA), superoxide radical (O-2 (.-)) and hydrogen peroxide (H2O2) in leaves of all plants but less in ALA-pretreated plants. Heat treatment resulted in higher antioxidant enzyme activities and proline and soluble sugar contents and weaker growth inhibition in ALA-pretreated plants than in those treated with heat alone. These results indicate that ALA pretreatment increased the tolerance of seedlings to heat stress.
引用
收藏
页码：780 / 784
页数：5
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