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Position: Home > Articles > Physiological responses of Ottelia acuminatas seedlings to exogenous copper stress Jiangsu Journal of Agricultural Sciences 2015 (4) 883-886

铜胁迫对海菜花幼苗生理特征的影响

作  者:
朱健;张志红;范菲菲;赵丽华
单  位:
贵州省土壤肥料研究所;贵州大学资源与环境工程学院
关键词:
铜;海菜花;叶绿素;抗氧化酶系统;可溶性蛋白质
摘  要:
本研究采用营养液培养法,研究了Cu2+胁迫对海菜花幼苗生理生化指标的影响。结果表明,0.01mg/L、0.05 mg/L、0.10 mg/L、0.20 mg/L和0.40 mg/L浓度的Cu2+胁迫处理显著降低海菜花幼苗叶片中叶绿素a、叶绿素b、总叶绿素及类胡萝卜素含量。随着Cu2+浓度的增加,超氧化歧化酶(SOD)、过氧化物酶(POD)活性、可溶性蛋白质、叶片中Cu2+含量先升高后降低;过氧化氢酶(CAT)呈持续降低趋势,且与对照差异显著。
译  名:
Physiological responses of Ottelia acuminatas seedlings to exogenous copper stress
作  者:
ZHU Jian;ZHANG Zhi-hong;FAN Fei-fei;ZHAO Li-hua;College of Resources and Environmental Engineering,Guizhou University;Guizhou Institute of Soil and Fertilizer;
关键词:
copper;;Ottelia acuminatas;;chlorophyll;;antioxidative enzyme system;;soluble protein
摘  要:
Effects of Cu2 +on physiological and biochemical indices of Ottelia acuminatas were studied by means of nutrient solution culture. The exogenous Cu2 +with varieties of concentrations( 0. 01 mg / L,0. 05 mg / L,0. 10 mg / L,0. 20 mg / L and 0. 40 mg / L) exhibited inhibitory effects on chlorophyll contents and carotinoid content in O. acuminatas leaves.The activities of superoxide dismutase( SOD),peroxidase( POD),soluble protein and leaf Cu2 +contents showed an " increase-first-and-deerease-afterwards" response to the increase of exogenous Cu2 +concentration,however,the activity of catalase( CAT) was continuously decreasing,indicative of intolerance of O. acuminatas to copper stress.

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