https://www.ahs.ac.cn/images/0513-353X/images/top-banner1.jpg|#|苹果
https://www.ahs.ac.cn/images/0513-353X/images/top-banner2.jpg|#|甘蓝
https://www.ahs.ac.cn/images/0513-353X/images/top-banner3.jpg|#|菊花
https://www.ahs.ac.cn/images/0513-353X/images/top-banner4.jpg|#|灵芝
https://www.ahs.ac.cn/images/0513-353X/images/top-banner5.jpg|#|桃
https://www.ahs.ac.cn/images/0513-353X/images/top-banner6.jpg|#|黄瓜
https://www.ahs.ac.cn/images/0513-353X/images/top-banner7.jpg|#|蝴蝶兰
https://www.ahs.ac.cn/images/0513-353X/images/top-banner8.jpg|#|樱桃
https://www.ahs.ac.cn/images/0513-353X/images/top-banner9.jpg|#|观赏荷花
https://www.ahs.ac.cn/images/0513-353X/images/top-banner10.jpg|#|菊花
https://www.ahs.ac.cn/images/0513-353X/images/top-banner11.jpg|#|月季
https://www.ahs.ac.cn/images/0513-353X/images/top-banner12.jpg|#|菊花

园艺学报 ›› 2007, Vol. 34 ›› Issue (6): 1373-1378.

• 果树 • 上一篇    下一篇

过氧化氢在采后香蕉果实耐冷性诱导中的作用

庞学群1,2;潘少丽1;王海波1;黄椿颖1;张昭其1*   

  1. 1华南农业大学园艺学院,广州 510642;2华南农业大学生命科学学院,广州 510642)
  • 收稿日期:2007-05-17 修回日期:2007-09-12 出版日期:2007-12-25 发布日期:2007-12-25
  • 通讯作者: 张昭其

Role of Hydrogen Peroxide on Chilling Resistance of Postharvest Banana Fruits

PANG Xue-qun1,2, PAN Shao-li1, WANG Hai-bo1, HUANG Chun-ying1, ZHANG Zhao-qi1*   

  1. (1College of Horticulture , South China Agricultural University, Guangzhou 510642, China; 2College of Biotechnology ,South China Agricultural University, Guangzhou 510642, China)
  • Received:2007-05-17 Revised:2007-09-12 Online:2007-12-25 Published:2007-12-25

摘要: 采用外源过氧化氢(H2O2)、能诱导植物产生内源H2O2的茉莉酸甲酯(MJ)和水杨酸(SA)处理采后香蕉果实,探讨H2O2在采后香蕉果实耐冷诱导中的作用,结果表明:在7℃下贮藏,外源20 mmol·L-1 H2O2、0.7 mmol·L-1 SA、0.1mmol·L-1 MJ处理能使果实冷害症状推迟2~5d出现;处理还延缓了香蕉果皮细胞膜透性和MDA含量的增加,提高了超氧化物歧化酶(SOD)和过氧化物酶(POD)活性,抑制了过氧化氢酶(CAT)活性,从而导致香蕉果皮H2O2积累。推测H2O2可能作为信号分子参与诱导了采后香蕉果实的抗冷性。

关键词: 香蕉, 过氧化氢, 水杨酸, 茉莉酸甲酯, 冷害, 耐冷性

Abstract: Exogenous hydrogen peroxide, and salicylic acid and methyl jasmonate,which induced the accumulation of endogenous hydrogen peroxide in plants, were used to investigate the role of hydrogen peroxide on induction of chilling resistance of postharvest banana fruits. The results indicated that 20 mmol·L-1 hydrogen peroxide, 0.7 mmol·L-1 salicylic acid and 0.1 mmol·L-1 methyl jasmonate treatments delayed the occurrence of chilling injury symptom of banana fruits by 2-5 d at 7℃. The treatments also delayed the increase of membrane permeability and MDA contents, induced the activities of SOD and POD, inhibited the activities of CAT, and therefore resulted in accumulation of endogenous hydrogen peroxide in pericarp of banana fruits. The results implied that salicylic acid and methyl jasmonate might induce the accumulation of endogenous hydrogen peroxide by inhibition of CAT activity, and hydrogen peroxide might involve in induction of the chilling resistance of postharvest banana fruits by acting as the signal molecule.

Key words: Banana, Hydrogen peroxide, Salicylic acid, Methyl jasmonate, Chilling, Cold resistance

中图分类号: