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《Chinese Agricultural Science Bulletin》 2009-09
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The Effects of Copper Stresses on the Growth and Physiological Characteristics for Commelina communis

Tian Shengni1, Peng Shaolin2, Zhang Yuqiong1, He Jinlin1, Zhou Jiangli1 (1School of Life Sciences, Anhui Agricultural University, Hefei 230036; 2School of Life Sciences, Zhongshan University, Guangzhou 510275)  
The effects of different concentrations Cu2+ on the growth and physiological characteristics for C. communis were studied by pot trials in this article. Cu2+ concentration used for the trials was 20, 50, 100, 200, 400 mg/L, respectively, and the deionized water was control group. The results showed that C.communis watered by 5 different concentrations Cu2+ solution could grow normally. Comparing with the control group, C. communis grew quickly in the earlier stage, but slowed down in the later stage. With the increasing of Cu2+ concentration, the average height of C. communis was increasing gradually. After various concentrations of Cu2+ Stresses treatment, SOD enzyme activities and proline contents of C. communis leaves were promoted gradually. Variance anlysis results showed that there were no significant difference among all treatments groups for SOD enzyme activities and proline contents. But the biomass of the upground and underground parts decreased with the increasing of Cu2+ concentration. This result indicated that C.communis presented strong resistance to Cu2+ stresses, which could resist heavy metal Cu2+ toxicity through promoting the proline contents and SOD enzyme activities and the physiological response in the body.
【Fund】: 安徽省教育厅自然科学基金“铜矿区植物金属耐性或超富集的机理研究”(KJ2007B120);; 安徽农业大学博士启动基金资助项目“植物对金属耐性的机理研究”(wd2006-12)
【CateGory Index】: X173
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