期刊文献+

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 被引量:10

Effects of duration of UV-C Radiation on Photosynthetic Characteristics and Activity of Antioxidant Enzyme in Pea Seedlings.
下载PDF
导出
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。 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. ), stomatal conductance ( Gs ) ,intercellular CO2 concentration ( Ci ) , transpiration rate (Etr ) 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.
出处 《生态与农村环境学报》 CAS CSCD 北大核心 2006年第1期34-37,共4页 Journal of Ecology and Rural Environment
基金 国家自然科学基金重大课题资助项目(90411019) 沈阳师范大学博士启动基金资助项目
关键词 UV—C辐射 光合作用 豌豆 抗氧化酶 UV-C radiation photosynthesis pea antioxidant enzyme
  • 相关文献

参考文献13

二级参考文献21

共引文献1163

同被引文献198

引证文献10

二级引证文献52

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部