[1]赵旭,姚慧敏,杨洁.长期不同根际O2浓度处理对雾培番茄植株抗氧化酶系统的影响[J].北方园艺,2020,44(17):1-7.[doi:10.11937/bfyy.20200080]
　ZHAO Xu,YAO Huimin,YANG Jie.Effects of Long-term Different Rhizosphere O2 Concentrations on Antioxidant System of Tomato Plants in Aeroponic Culture[J].Northern Horticulture,2020,44(17):1-7.[doi:10.11937/bfyy.20200080]
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长期不同根际O2浓度处理对雾培番茄植株抗氧化酶系统的影响

《北方园艺》[ISSN:1001-0009/CN:23-1247/S] 卷: 第44卷 期数: 2020年17 页码: 1-7 栏目: 出版日期: 2020-09-15
Title:
Effects of Long-term Different Rhizosphere O2 Concentrations on Antioxidant System of Tomato Plants in Aeroponic Culture
作者:
赵旭1; 2; 姚慧敏1; 2; 杨洁1; 2
（1.山东省农业可持续发展研究所,山东 济南 250100；2.农业农村部华东都市农业重点实验室，山东 济南 250100）
Author(s):
ZHAO Xu1; 2; YAO Huimin1; 2; YANG Jie1; 2
(1.Shandong Institute of Agricultural Sustainable Development，Jinan,Shandong 250100;2.Key Laboratary of East China Urban Agriculture，Ministry of Agriculture and Rural Area，Jinan，Shandong 250100)
关键词:
根际O2浓度; 雾培; 番茄; 抗氧化酶系统
Keywords:
root-zone O2 concentration; aeroponic culture; tomato; antioxidant system
DOI:
10.11937/bfyy.20200080
文献标志码:
A
摘要:
以“辽园多丽”番茄为试材，采用气雾法栽培，自第一花序花全部开放时连续处理45 d，研究根际O2处理浓度分别在21%（对照）、10%、5%处理条件下对番茄植株抗氧化系统的影响，以期为番茄高产优质栽培提供参考依据。结果表明：5%和10%低氧处理的番茄植株根系和叶片在根际处理前期保护酶活性升高，可一定程度上降低活性氧自由基的浓度，对于膜脂的过氧化程度也有减弱作用。当处理时长增加时，发挥保护作用的各种酶类会出现活性降低的现象，番茄根系和叶片细胞的膜脂过氧化程度也会更严重，植株的正常代谢遭到一定程度的影响，在处理结束时，5%和10%低氧处理根系MDA含量分别是对照的1.9倍和1.6倍，POD活性分别是对照的1.3倍和1.2倍，CAT活性分别是对照的2.4倍和2.0倍；叶片MDA含量分别是对照的1.8倍和1.6倍，POD活性分别是对照的1.96倍和1.20倍，CAT活性分别为对照的2.02倍和1.70倍。上述结果表明，长期根际低氧显著影响植株的抗氧化酶活性，对植株根系和叶片造成一定的生理影响。根际O2富足可能是雾培条件下植株生长发育旺盛的重要原因之一。
Abstract:
Using ‘Liaoyuan Duoli’ tomato as the test material，the root systems of tomato plants were treated with three different O2 concentration，21%(CK)，10%，and 5%，at first inflorescence a thesis by areoponic culture for 45 days to investigate the response of antioxidant system of tomato plants.The results showed that the protective enzyme activities of roots and leaves of 5% and 10% hypoxia treated tomato plants increased in the early stage of rhizosphere treatment，which could remove active oxygen free radicals and reduce the degree of membrane lipid peroxidation.With the prolongation of treatment time，the comprehensive ability of various protective enzymes to synergistically remove active oxygen decreased，and the degree of membrane lipid peroxidation in roots and leaves of tomato plants increased.At the end of treatments，the MDA content in the roots of 5% and 10% hypoxia treatment was respectively 1.9 times and 1.6 times of the control.POD activity was respectively 1.3 times and 1.2 times of the control.CAT activity was respectively 2.4 times and 2.0 times of control.The leaf MDA content was 1.8 times and 1.6 times of the control.POD activity was respectively 1.96 times and 1.20 times of control.CAT activity was respectively 2.02 times and 1.70 times of control.The above results indicated that long-term root-zone hypoxia significantly affects the antioxidant enzyme activity of the plant，and had a certain physiological impact on the plant roots and leaves.Enriched O2 around root zone may be the main reason of aeroponic tomato growing stronger.

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备注/Memo

第一作者简介：赵旭（1980-），女，辽宁沈阳人，博士，高级农艺师，现主要从事设施蔬菜生理生态及都市农业栽培模式等研究工作。E-mail:cfszhaoxu@shandong.cn.责任作者：姚慧敏（1979-），女，山东菏泽人，硕士，副研究员，现主要从事都市农业栽培模式等研究工作。E-mail:LDZDGC@163.com.基金项目：山东省农业科学院农业科技创新工程资助项目(CXGC2017B03)。收稿日期：2020-01-06

更新日期/Last Update: 2020-11-24