植物研究 ›› 2004, Vol. 24 ›› Issue (4): 443-446.
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马广岳, 施国新, 王学
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MA Guang-Yue, SHI Guo-Xin, WANG Xue
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摘要： 铈能减缓铜胁迫导致的紫萍(Spirodela polyrhiza L.)叶片膜透性的增加、可溶性蛋白含量和叶绿素a/b 值的下降以及超氧阴离子(O2·)、丙二醛(MDA)的积累。与同浓度的单一铜处理相比, 加入20 mg/L 的铈后, 超氧化物歧化酶(SOD)、过氧化氢酶(CAT)、过氧化物酶(POD)的活性和类胡萝卜素(Car)、抗坏血酸(AsA)含量不同程度的增强或增多, 暗示铈可能通过提高紫萍活性氧清除能力以增强对铜的抗性和耐性。
关键词: 铜, 铈, 紫萍, 抗性
Abstract: Cerous relieved the increase of membrance penetrability (MP), the decrease of soluble protein content and chlorophyll a/b value, the accumulation of O2· andMDA in Spirodela polyrhiza L.leaves under stress of Cu2+.Compared with those of single Cu2+ treatment, 20 mg/L Ce improved the activities of superoxide dismutase( SOD), catlase(CAT)and peroxidase(POD), the content of Car and AsA to a certain extent.The results implied that Ce could enhance the abilities of reactive oxygen species(ROS)scavenging system in the plant, therefore increase the resistance and tolerance to Cu stress.
Key words: Cu, Ce, Spirodela polyrhiza L., resistance
马广岳, 施国新, 王学. 铈对紫萍抗铜能力的影响[J]. 植物研究, 2004, 24(4): 443-446.
MA Guang-Yue, SHI Guo-Xin, WANG Xue. Effects of Cerous on the Cu-resistance of Spirodela polyrhiza[J]. Bulletin of Botanical Research, 2004, 24(4): 443-446.
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https://bbr.nefu.edu.cn/CN/Y2004/V24/I4/443
