Ethylene perception inhibitor 1-MCP decreases oxidative damage of leaves through enhanced antioxidant defense mechanisms in soybean plants grown under high temperature stress

2011 ◽  
Vol 71 (2) ◽  
pp. 215-223 ◽  
Author(s):  
M. Djanaguiraman ◽  
P.V.V. Prasad ◽  
K. Al-Khatib
Keyword(s):  
High Temperature ◽  
Oxidative Damage ◽  
Temperature Stress ◽  
Defense Mechanisms ◽  
Antioxidant Defense ◽  
High Temperature Stress ◽  
Soybean Plants

The role of selenium in amelioration of heat-induced oxidative damage in cucumber under high temperature stress

2016 ◽  
Vol 38 (6) ◽  
Author(s):  
Rashad Mukhatar Balal ◽  
Muhammad Adnan Shahid ◽  
Muhammad Mansoor Javaid ◽  
Zafar Iqbal ◽  
Muhammad Akbar Anjum ◽  
...  
Keyword(s):  
High Temperature ◽  
Oxidative Damage ◽  
Temperature Stress ◽  
High Temperature Stress

scholarly journals Exogenous Spermidine Alleviates the Oxidative Damage in Cucumber Seedlings Subjected to High Temperatures

2012 ◽  
Vol 137 (1) ◽  
pp. 11-19 ◽  
Author(s):  
Jing Tian ◽  
Li-Ping Wang ◽  
Yan-Juan Yang ◽  
Jin Sun ◽  
Shi-Rong Guo
Keyword(s):  
High Temperature ◽  
Oxidative Damage ◽  
Temperature Stress ◽  
Heat Tolerance ◽  
Antioxidant Activities ◽  
Foliar Spray ◽  
High Temperature Stress ◽  
Antioxidant Ability ◽  
Cucumber Seedlings ◽  
Exogenous Spermidine

Heat tolerance is considered to be an essential feature for cucumber (Cucumis sativus) production, and it has been suggested that higher antioxidant ability could prevent the oxidative damage in plants caused by high-temperature stress. We aimed to investigate whether the application of exogenous spermidine (Spd) increases antioxidant activities and, therefore, elevates the heat tolerance of cucumber. Cucumber seedlings (cv. Jinchun No. 4) showing moderate heat tolerance were grown in climate chambers to investigate the effects of exogenous Spd (1 mm) foliar spray treatment on the activities and isozyme levels of antioxidative enzymes under both high-temperature stress 42/32 °C (day/night) and normal temperature 28/18 °C (day/night). On high-temperature stress, the activities of superoxide dismutase and ascorbate peroxidase were significantly reduced; the catalase activity was initially lower and then increased, whereas the peroxidase activity was initially higher and then decreased. The levels of these isozymes also changed differently. On treatment with exogenous Spd, the activities of these antioxidant enzymes were noticeably enhanced, and the isozyme zymogram expression had some changes. It was concluded that foliar spray with Spd effectively improved the total antioxidant ability of cucumber seedlings and, therefore, enhanced the tolerance of the plants to high-temperature stress.

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