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引用本文:武晓燕,施国新,徐勤松,王春涛,王学,马广岳,胡金朝,吴国荣.外源ASA对菹草(Potamogeton crispus)抗Cd2+毒害的实验分析.湖泊科学,2005,17(1):87-92. DOI:10.18307/2005.0114
WU Xiaoyan,SHI Guoxin,WANG Chuntao,XU Qinsong,WANG Xue,MA Guangyue,HU Jinzhao,WU Guor-ong.Experimental Analysis in Resistance of Toxic Effects of Cd2+ on Potamogeton crispus Induced by Exogenous Acetosalicylic Acid. J. Lake Sci.2005,17(1):87-92. DOI:10.18307/2005.0114
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外源ASA对菹草(Potamogeton crispus)抗Cd2+毒害的实验分析
武晓燕, 施国新, 徐勤松, 王春涛, 王学, 马广岳, 胡金朝, 吴国荣
南京师范大学生命科学院, 南京210097
摘要:
实验以高等水生沉水植物菹草为材料,研究在不同浓度Cd2+毒害条件下外施乙酰水杨酸(ASA)对菹草叶中叶绿素含量、可容性蛋白含量、O2·产生速率、保护酶—超氧化物歧化酶(SOD)、过氧化物酶(POD)、过氧化氢酶(CAT)活性的影响.结果表明,施用ASA可以显著提高叶绿素和可溶性蛋白的含量,增强保护酶的活性,降低O2·产生速率,从而减轻了重金属Cd2+胁迫对植物体造成的伤害.
关键词:  Cd2+  O2padding-top: 0px  ">·    乙酰水杨酸  菹草
DOI:10.18307/2005.0114
分类号:
基金项目:国家自然科学基金(30370083)、教育部科学技术研究重点项目(010143)、江苏省教育厅自然科学基金(03KJB180062)、江苏省重点实验室开放基金项目联合资助.
Experimental Analysis in Resistance of Toxic Effects of Cd2+ on Potamogeton crispus Induced by Exogenous Acetosalicylic Acid
WU Xiaoyan, SHI Guoxin, WANG Chuntao, XU Qinsong, WANG Xue, MA Guangyue, HU Jinzhao, WU Guor-ong
College of Life Science, Nanjing Normal University, Nanjing 210097, P. R. China
Abstract:
Changes of chlorophyll content, soluble protein content, O2· generating rate and activity of protective enzymes (SOD, POD, CAT) in leaves of Potamogeton crispus Linn, under different concentration gradient of Cd2+ stress or exogenous acetosalicylic acid treatment were studied and analyzed.The results showed that exogenous acetosalicylic acid could increase chlorophyll and soluble protein content clearly, and markly enhance activity of protective enzymes.At the same time O2· generating rate was lower than those of trearaent under single Cd2+ stress.So it was concluded that acetosalicylic acid could alleviate the toxic effects caused by Cd2+ stress.
Key words:  Cd2+  O2padding-top: 0px  ">·   Potamogeton crispus  acetosalicylic acid
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