%0 Journal Article
%T Effects of lead stress on anti-oxidative enzyme activities and isoenzymes in cucumber seedlings<br>铅胁迫对黄瓜幼苗抗氧化酶活性及同工酶的影响
%A LIU Suchun
%A XIAO Langtao
%A LIAO Bohan
%A LU Xudong
%A KUANG Fengchun
%A ZHAO Wenkui
%A TONG Jianhua
%A <br>刘素纯
%A 萧浪涛
%A 廖柏寒
%A 鲁旭东
%A 匡逢春
%A 赵文魁
%A 童建华
%J 应用生态学报
%D 2006
%I 
%X With hydroponics and polyacrylamide gel electrophoresis (PAGE), this paper studied the effects of lead stress on the activities of peroxidase (POD), superoxide dismutase (SOD) and catalase (CAT), and their isoenzymic band numbers in cucumber seedlings. The results showed that the isoenzymic bands and expression quantity of POD decreased gradually with increasing lead concentration. The SOD activity increased with increasing lead concentration within the range of 0-500 mg Pb x L(-1), reached the maximum at 7th day, and then decreased rapidly, being lower than the control of the same period. Under the concentration of 900 mg Pb x L(-1), the SOD activity decreased with time. The isoenzymic bands and expression quantity of SOD were negatively related to lead concentration. No significant change was observed in the isoenzymic bands of CAT, but a significant difference was found in the expression quantity of CAT isoenzymes.
%K Lead stress
%K Cucumber seedling
%K Isoenzyme
%K Peroxidase
%K Superoxide dismutase
%K Catalase<br>铅胁迫
%K 黄瓜幼苗
%K 同工酶
%K 过氧化物酶
%K 超氧化物歧化酶
%K 过氧化氢酶
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=90BA3D13E7F3BC869AC96FB3DA594E3FE34FBF7B8BC0E591&jid=42FEDDFE54F8BCD9D5FD1926ABDD7722&aid=3CFB9AA303E2B603&yid=37904DC365DD7266&vid=BCA2697F357F2001&iid=0B39A22176CE99FB&sid=B1E36BF7B9783A85&eid=8ED630AD8C61FAE8&journal_id=1001-9332&journal_name=应用生态学报&referenced_num=22&reference_num=29