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Bulletin of Botanical Research ›› 2004, Vol. 24 ›› Issue (4): 443-446.

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Effects of Cerous on the Cu-resistance of Spirodela polyrhiza

MA Guang-Yue, SHI Guo-Xin, WANG Xue   

  1. College of Life Science, Nanjing Normal University, Nanjing 210097
  • Received:2003-11-17 Online:2004-12-15 Published:2016-06-14

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