| 水杨酸对高温强光下小麦抗氧化及光合作用的影响 |
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| 引用本文： | 马培芳,杨亚军,赵会杰.水杨酸对高温强光下小麦抗氧化及光合作用的影响[J].河南农业科学,2009(4). |
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| 作者姓名： | 马培芳 杨亚军 赵会杰 |
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| 作者单位： | 河南农业大学,生命科学学院,河南,郑州,450002 |
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| 摘 要： | 以浓度为0.5 mmol/L的水杨酸(SA)水溶液喷施灌浆期小麦叶片,然后进行高温强光胁迫处理,研究SA对高温强光下小麦叶片氧化损伤及光合机构运转的影响。结果表明,SA能有效防护高温强光所致的氧化损伤,维持较高的SOD和APX活性,减少H2O2的积累,抑制脂质过氧化作用。明显减轻高温强光胁迫对光合机构的破坏,维持较高的PSⅡ原初光化学效率(Fv/Fm)、实际光化学效率(ФPSⅡ)、光化学猝灭系数(qP)和净光合速率(Pn)。
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| 关 键 词： | 水杨酸 高温强光胁迫 小麦叶片 氧化损伤 光合作用 |
Effects of Salicylic Acid on Antioxidant Metabolism and Photosynthesis of Wheat Leaves under Heat and Irradiance Stress |
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| MA Pei-fang,YANG Ya-jun,ZHAO Hui-jie.Effects of Salicylic Acid on Antioxidant Metabolism and Photosynthesis of Wheat Leaves under Heat and Irradiance Stress[J].Journal of Henan Agricultural Sciences,2009(4). |
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| Authors: | MA Pei-fang YANG Ya-jun ZHAO Hui-jie |
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| Institution: | College of Life Sciences;Henan Agricultural University;Zhengzhou 450002;China |
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| Abstract: | The wheat leaves at grain-filling stage were sprayed with 0.5mmol/L of salicylic acid(SA) and then treated with high temperature and high irradiance to study the effects of salicylic acid(SA) on active oxygen metabolism and operation of photosynthetic apparatus in wheat leaves.The results showed that SA could maintain higher activities of superoxide dismutase(SOD) and ascorbate peroxidase(APX),and reduce the contents of H2O2and malondialdehyde(MDA),indicating that SA protected wheat leaves from oxidative da... |
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| Keywords: | Salicylic acid Heat and high irradiance stress Wheat leaves Oxidative damage Photosynthesis |
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