Arbuscular mycorrhizal influence on growth, photosynthetic pigments, osmotic adjustment and oxidative stress in tomato plants subjected to low temperature stress

文献类型： 外文期刊

第一作者： Latef, Arafat Abdel Hamed Abdel

作者： Latef, Arafat Abdel Hamed Abdel;He Chaoxing

作者机构：

关键词： catalase: 9001-05-2;EC 1.11.1.6;malondialdehyde: 542-78-9;sugar: 57-50-1;peroxidase: 9003-99-0;EC 1.11.1.7;proline: 609-36-9;antioxidant enzyme;superoxide dismutase: 9054-89-1;EC 1.15.1.1;photosynthetic pigment;ascorbate peroxidase:72906-87-7;EC 1.11.1.11;soluble protein;oxidative stress;enzyme activity;osmotic adjustment;growth effect;low temperature stress;host biomass;lipid peroxidation mechanism;cold tolerance mechanism

期刊名称：ACTA PHYSIOLOGIAE PLANTARUM （ 影响因子：2.354； 五年影响因子：2.711 ）

ISSN：

年卷期：

页码：

收录情况： SCI

摘要： The influence of the arbuscular mycorrhizal (AM) fungus, Glomus mosseae, on characteristics of growth, photosynthetic pigments, osmotic adjustment, membrane lipid peroxidation and activity of antioxidant enzymes in leaves of tomato (Lycopersicon esculentum cv Zhongzha105) plants was studied in pot culture under low temperature stress. The tomato plants were placed in a sand and soil mixture at 25A degrees C for 6 weeks, and then subjected to 8A degrees C for 1 week. AM symbiosis decreased malondialdehyde (MDA) content in leaves. The contents of photosynthetic pigments, sugars and soluble protein in leaves were higher, but leaf proline content was lower in mycorrhizal than non-mycorrhizal plants. AM colonization increased the activities of superoxide dismutase (SOD), catalase (CAT), peroxidase (POD), and ascorbate peroxidase (APX) in leaves. The results indicate that the AM fungus is capable of alleviating the damage caused by low temperature stress on tomato plants by reducing membrane lipid peroxidation and increasing the photosynthetic pigments, accumulation of osmotic adjustment compounds, and antioxidant enzyme activity. Consequently, arbuscular mycorrhiza formation highly enhanced the cold tolerance of tomato plant, which increased host biomass and promoted plant growth.

分类号： Q94

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