The role of gibberellins in the mitigation of chilling injury in cherry tomato (Solanum lycopersicum L.) fruit

被引：90

作者：

Ding, Yang ^{[1
]}

Sheng, Jiping ^{[2
]}

Li, Shuying ^{[1
]}

Nie, Ying ^{[1
]}

Zhao, Jinhong ^{[1
]}

Zhu, Zhen ^{[1
]}

Wang, Zhidong ^{[1
]}

Tang, Xuanming ^{[1
]}

机构：

[1] Chinese Acad Agr Sci, Minist Agr, Inst Agrofood Sci & Technol, Key Opening Lab Agr Prod Proc & Qual Control, Beijing 100193, Peoples R China

[2] Renmin Univ China, Sch Agr Econ & Rural Dev, Beijing 100872, Peoples R China

来源：

POSTHARVEST BIOLOGY AND TECHNOLOGY | 2015年 / 101卷

基金：

中国国家自然科学基金;

关键词：

Chilling injury; Gibberellin homeostasis; Antioxidant capacity; Cherry tomato fruit; SALICYLIC-ACID; ANTIOXIDANT SYSTEM; STRESS TOLERANCE; LOW-TEMPERATURE; ABIOTIC STRESS; PLANT-GROWTH; METABOLISM; EXPRESSION; RESPONSES; GENE;

D O I：

10.1016/j.postharvbio.2014.12.001

中图分类号：

S3 [农学（农艺学）];

学科分类号：

0901 ;

摘要：

Tomato fruit is cold-sensitive and susceptible to chilling injury during cold storage. Bioactive gibberellins (GAs), which play an important role in regulating various physiological processes, have been reported to be involved in stress responses of plant. In this study, we investigated the effect of GA on chilling injury of harvested cherry tomato fruit. We found that low temperature significantly inhibited increase of endogenous levels of gibberellic acid (GA(3)) in fruit. This effect was associated with lower expression of key GA metabolic genes, GA3ox1,GA20ox1 and GA2ox1. GA(3) treatment reduced the chilling injury index, whereas treatment with paclobutrazol (PAC), a GA biosynthesis inhibitor, exacerbated chilling injury. Compared with the control, GA(3) treatment decreased electrolyte leakage and malondialdehyde content, increased proline content, and improved antioxidant enzyme activities. Treatment with PAC caused the opposite effects. These results suggest that endogenous GA levels were positively associated with lipid peroxidation and oxidative stress in chilled fruit. GA appears to play an important role in cold response regulation in fruit. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：88 / 95

页数：8

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