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| 不同UV-C辐射时间对豌豆幼苗光合特性及抗氧化酶活性的影响 | |
| 引用本文： | 李雪梅,张利红,马莲菊,陈强,王兰兰.不同UV-C辐射时间对豌豆幼苗光合特性及抗氧化酶活性的影响[J].生态与农村环境学报,2006,22(1):34-37. |
| 作者姓名： | 李雪梅 张利红 马莲菊 陈强 王兰兰 |
| 作者单位： | 1. 沈阳师范大学,化学与生命科学学院,辽宁,沈阳,1110034;中国科学院,沈阳应用生态研究所,辽宁,沈阳,110016 2. 中国科学院,沈阳应用生态研究所,辽宁,沈阳,110016 3. 沈阳师范大学,化学与生命科学学院,辽宁,沈阳,1110034 |
| 基金项目： | 国家自然科学基金;沈阳师范大学校科研和教改项目 |
| 摘 要： | 研究了不同UV-C辐射时间对豌豆幼苗光合特性及抗氧化酶活性的影响。结果表明,UV-C辐射增强使叶片光合速率减弱,气孔导度、胞间CO2浓度、蒸腾速率和羧化效率明显降低,CO2补偿点升高。随着UV-C辐射时间的延长,POD和CAT活性先升高随后降低,SOD活性、叶绿素含量则逐渐降低,但丙二醛含量逐渐增加。这说明UV-C辐射增强引起抗氧化酶活性降低,使膜脂过氧化,导致光合作用减弱。 |
| 关 键 词： | UV-C辐射 光合作用 豌豆 抗氧化酶 |
| 文章编号： | 1673-4831(2006)01-0034-04 |
| 收稿时间： | 2005-09-20 |
| 修稿时间： | 2005年9月20日 |
Effects of duration of UV-C Radiation on Photosynthetic Characteristics and Activity of Antioxidant Enzyme in Pea Seedlings |
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| LI Xue-mei,ZHANG Li-hong,MA Lian-ju,CHEN Qiang,WANG Lan-lan.Effects of duration of UV-C Radiation on Photosynthetic Characteristics and Activity of Antioxidant Enzyme in Pea Seedlings[J].Journal of Ecology and Rural Environment,2006,22(1):34-37. | |
| Authors: | LI Xue-mei ZHANG Li-hong MA Lian-ju CHEN Qiang WANG Lan-lan |
| Institution: | 1. College of Chemistry and Life Science, Shenyang Normal University, Shenyang 110034, China; 2. Shenyang Institute of Applied Ecology, Chinese Academy of Sciences, Shenyang 110016, China |
| Abstract: | Effects of duration of UV-C radiation on photosynthetic characteristics and activity of antioxidant enzyme in pea seedlings were studied.Results show that Enhanced UV-C radiation significantly decreased photosynthesis rate(P_n),stomatal conductance(G_s),intercellular CO_2 concentration(C_i),transpiration rate(E_(tr))and carboxylation efficiency(CE).Prolonged duration of UV-C radiation increased the activities of POD and CAT,which soon declined,and kept the activity of SOD,and the content of chlorophyll gradually going down,but the content of MDA going up.The results suggest that enhanced UV-C radiation decreased activities of the antioxidant enzymes and made membrane peroxidated,thus leading to weakened photosynthesis. |
| Keywords: | UV-C radiation photosynthesis pea antioxidant enzyme |
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