The Effects of Arbuscular Mycorrhizal Fungi on Reactive Oxyradical Scavenging System of Tomato Under Salt Tolerance

文献类型： 外文期刊

第一作者： Huang Zhi

作者： Huang Zhi;He Chao-xing;Zhang Zhi-bin;Huang Zhi;Zou Zhi-rong;Huang Zhi;He Zhong-qun

作者机构：

关键词： arbuscular mycorrhizal fungi (AMF);osmoregulation;salt stress;tomato

期刊名称：AGRICULTURAL SCIENCES IN CHINA （ 影响因子：0.82； 五年影响因子：0.997 ）

ISSN： 1671-2927

年卷期： 2010 年 9 卷 8 期

页码：

收录情况： SCI

摘要： The effects of arbuscular mycorrhizal fungi (AM F), Glomus mosseae, on oxygen radical scavenging system of tomato under salt stress were studied in potted culture experiments. The response of tomato (Lycopersicon esculentum L.) cultivar Zhongza 9 seedlings with AM F inoculation and control to salt stress (0, 0.5 and 1.0% NaCl solution, respectively) was investigated. The results showed that the salt stress significantly reduced the dry matter content of roots, stems and leaves, and also the leaf area as compared with the control treatment. However, arbuscular mycorrhizal-inoculated (AM) significantly improved the dry matter and the leaf area in the salt-stressed plants. The effect of AMF on dry matter was more pronounced in aerial biomass than in root biomass which might be due to AM colonization. The activities of SOD, POD, ASA-POD, and CAT in leaves and roots of mycorrhizal and non-mycorrhizal treatment of tomato plants were increased and had different rules under different NaCl concentrations (solution of 0, 0.5 and 1% NaCl), but all enzymes had a rise in the beginning of treatment under salt stress conditions. The AMF did not change the rule of tomato itself under salt stress, but AMF increased these enzyme activities in different levels. The AMF treatment significantly increased SOD, POD and ASA-POD activities in leaves and roots, whereas it had little effects on CAT in root. O2(center dot-) production rate and MDA content in leaves increased continuously, which showed a positive line correlation with salt stress concentration. O(2)(center dot-) production rate and MDA content in tomato plants significantly decreased by AM treatment compared with non-mycorrhizal treatment. In conclusion, AM could alleviate the growth limitations imposed by saline conditions, and thereby play a very important role in promoting plant growth under salt stress in tomato.

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