[1]吴晓蕾,张颖,贾邱颖,等.低氧胁迫下γ-氨基丁酸（GABA）对甜瓜植株活性氧代谢的影响[J].北方园艺,2019,43(13):53-58.[doi:10.11937/bfyy.20183916]
　WU Xiaolei,ZHANG Ying,JIA Qiuying,et al.Effect of Exogenous γ-aminobutyric Acid(GABA) on Reactive Oxygen Species Metabolism of Melon Under Hypoxia Stress[J].Northern Horticulture,2019,43(13):53-58.[doi:10.11937/bfyy.20183916]
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低氧胁迫下γ-氨基丁酸（GABA）对甜瓜植株活性氧代谢的影响

《北方园艺》[ISSN:1001-0009/CN:23-1247/S] 卷: 43卷 期数: 2019年13 页码: 53-58 栏目: 出版日期: 2019-07-15
Title:
Effect of Exogenous γ-aminobutyric Acid(GABA) on Reactive Oxygen Species Metabolism of Melon Under Hypoxia Stress
作者:
吴晓蕾1; 张颖1; 贾邱颖1; 李敬蕊1; 高秀瑞2; 高洪波1
（1.河北农业大学 园艺学院，河北 保定 071000；2.河北省农林科学院 经济作物研究所，河北 石家庄 050051）
Author(s):
WU Xiaolei1; ZHANG Ying1; JIA Qiuying1; LI Jingrui1; GAO Xiurui2; GAO Hongbo1
(1.College of Horticulture，Hebei Agricultural University，Baoding，Hebei 071001；2.Institute of Economic Crops，Hebei Academy of agriculture and Forestry Sciences，Shijiazhuang，Hebei 050051)
关键词:
甜瓜; γ-氨基丁酸（GABA）; 低氧胁迫; 活性氧代谢
Keywords:
melon; γ-aminobutyric acid(GABA); stress of hypoxia; metabolism of reactive oxygen species
DOI:
10.11937/bfyy.20183916
文献标志码:
A
摘要:
以‘西域一号’甜瓜为试材，采用营养液水培法，研究了外源γ-氨基丁酸（GABA）对低氧胁迫下甜瓜植株根系和叶片活性氧代谢的影响，以期了解外源GABA对甜瓜低氧胁迫伤害缓解的活性氧代谢机制。结果表明：低氧胁迫条件下，甜瓜植株根系和叶片的抗氧化酶如超氧化物歧化酶（SOD）、过氧化物酶（POD）、过氧化氢酶（CAT）的活性均显著上升，且H2O2含量、O?[TX-*4]2产生速率和丙二醛（MDA）含量也较通气对照显著上升；营养液中添加5 mmol?L-1 GABA后，根系和叶片中的SOD、POD和CAT活性显著高于低氧胁迫处理，而植株体内O?[TX-*4]2产生速率、H2O2和MDA含量则显著降低。证明外源GABA可通过提高植株体内抗氧化酶活性，降低活性氧的积累，减轻活性氧对于细胞的伤害，从而促进甜瓜的耐低氧能力的提高。
Abstract:
By the method of hydroponic culture，the effects of exogenous γ-aminobutyric acid (GABA) on active oxygen metabolism of roots and leave of ‘Xiyu No.1’ muskmelon under hypoxia stress were studied，in order to elucidate the mechanism of active oxygen metabolism of exogenous GABA in alleviating hypoxic stress injury of Melon.It showed that the activity of SOD,POD and CAT，and H2O2,MDA content and O?[TX-*4]2 productive rate of hypoxia stress treatment were all dramatically rised，compared to ventilation control.Exogenous 5 mmol?L-1 GABA could effectively alleviate the harm of hypoxia stress in roots and leaves of melon.Activities of SOD，POD and CAT of roots and leaves of melon plant dramatically rised,and O?[TX-*4]2 productive rate，the contents of H2O2 and MDA dramatically decreased.It suggested that exogenous GABA could increase the resistance of melon plant under hypoxia stress most likely by improvng the activity of antioxidant enzymes in plants and decreasing the accumulation of reactive oxygen species.

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备注/Memo

第一作者简介：吴晓蕾（1979-），女，天津人，博士，副教授，研究方向为设施作物栽培与生理。E-mail：yywxl@hebau.edu.cn.责任作者：高洪波（1976-），女，河北秦皇岛人，博士，教授，博士生导师，现主要从事设施蔬菜和无土栽培的教学和研究等工作。E-mail：hongbogao@hebau.edu.cn.基金项目：河北省自然科学基金资助项目（C2014204074）；河北省财政资助项目（F17R04）；河北农业大学中青年骨干教师境外研修资助项目（2016）。收稿日期：2019-02-18

更新日期/Last Update: 2019-07-31