Physiological and ecological response of lorn to heavy metal toxicity under the action of chelate and AM mycorrhira joint remediation
Test was conducted to compare the physiological and ecological response of maize (Zea mays L) by singly or compositely adding different kinds of chelates (EDTA,EDDS,AES and IDSA)and Arbuscular Mycorrhizal (AM).The results show that AM decreases malondialdehyde (MDA) concentration (the value is 139%) and improves superoxide dismutase (SOD),catalase (CAT) and ascorbate peroxidase (APX) activity in maize leaves,of which SOD activity is increased by 57.2% and APX activity is 4.3 times of the control; Adding chelating agents increases MDA concentration,of which MDA concentration in maize leaves is increased respectively by 65.3%,163.2% and 87.4% by adding EDTA,EDDS and AES; Compositely adding chelating agents and AM mycorrhizal enhances the effect of singly adding chelating agents,of which compared with EDTA and EDDS,MDA concentration in AM&EDTA and AM&EDDS is decreased respectively by 30.0% and 305.8%,compared with AES and IDSA,CAT activity in AM&AES and AM&IDSA is increased respectively by 166.6% and 61.4% and compared with EDTA,AES and IDSA,APX activity in AM&EDTA,AM&AES and AM&IDSA is increased respectively by 165.2%,51.2% and 118.5%.
Y.Z.Wang Z.Q.Zhao X.N.Liu
School of Land Science and Technology, China University of Geosciences, Beijing, China Key Laboratory of Land Consolidation and Rehabilitation, Ministry of Land and Resources, Beijing, China
国际会议
北京
英文
417-421
2014-10-16（万方平台首次上网日期，不代表论文的发表时间）