%0 Journal Article
%T ACCUMULATION OF SUPEROXIDE RADICAL IN WHEAT LEAVES UNDER CADMIUM STRESS<br>镉胁迫下小麦叶中超氧阴离子自由基的积累
%A Luo Lixin
%A Sun Tieheng
%A Jin Yuehua
%A <br>罗立新
%A 孙铁珩
%A 靳月华
%J 环境科学学报
%D 1998
%I 
%X Germinating seedlings of wheat (Triticum aestivum) were treated with different concentrations of cadmium acetate (0.05, 0.1, 0.3, 0.5 and 1.0 mmol/L. Cd2+ treatment significantly enhanced the accumulations of superoxide radical (O-·2) and malondialdehyde (MDA) in wheat leaves. Under cadmium stress, the activity of superoxide dismutase (EC1.15.1.1) apparently decreased while catalase (EC1.11.1.6) changed insignificantly. Furthermore, the content of sulfhyryl group was lower, and the electrolyte leakage outward leave cells was much high. Our results suggest that effects of Cd2+ on wheat seeding are achieved by excessive accumulation of superoxide radical which results from the degradation of the free radical scavenging system.
%K cadmium
%K wheat
%K membrane lipid peroxidation
%K superoxide radical
%K superoxide dismutase<br>镉
%K 小麦
%K 超氧阴离子
%K 作物监测
%K SOD
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=3FF3ABA7486768130C3FF830376F43B398E0C97F0FF2DD53&cid=A7CA601309F5FED03C078BCE383971DC&jid=03A55E61A8750ACAC6AF81EF9E2AC838&aid=14782EA6C2D8F095&yid=8CAA3A429E3EA654&vid=13553B2D12F347E8&iid=94C357A881DFC066&sid=DDDA4F26E8AD3C0E&eid=A03A15CF5604A8B0&journal_id=0253-2468&journal_name=环境科学学报&referenced_num=98&reference_num=9