|Table of Contents|

Effects of Long-term Different Rhizosphere O2 Concentrations on Antioxidant System of Tomato Plants in Aeroponic Culture

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2020年17
Page:
1-7
Research Field:
Publishing date:

Info

Title:
Effects of Long-term Different Rhizosphere O2 Concentrations on Antioxidant System of Tomato Plants in Aeroponic Culture
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)
Keywords:
root-zone O2 concentration; aeroponic culture; tomato; antioxidant system
PACS:
-
DOI:
10.11937/bfyy.20200080
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.

References:

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Last Update: 2020-11-24