四川林业科技2012，Vol.33Issue(6)：50-53,4.
铅胁迫对4种木本植物酶保护系统的影响
Effect of Lead Stress on Enzyme System of Four Woody Plants
摘要
Abstract
Along with urbanization and industrialization,lead pollution in a city has a heavy side effect on the urbanecological system. Therefore the study of response of the enzyme system in woody plant species to the lead stress is important for the urban ecological system. Studies on the enzyme characteristics and mechanism of leaves in Loropetalum chinese ( R. Rr. ) Oliv. , Platycladus orientalis ( L. ) Endll, Acacia famesiana ( Linn. ) Willd, Populusdeltoides x Populus nigara were carried out under four lead gradient (0,300,450,600 mg· kg-1 and the control sample without lead). The changes in their enzyme system were measured and analysed under the lead stress. The results were as follows). Under lead conditions, the activity of SOD, and POD of Populusdeltoides x Populus nigara, Platycladus orientalis ( L. ) Endll and Loropetalum chinese ( R. Rr. ) Oliv. was markedly higher than that of the the activity of SOD, and POD of Populusdeltoides x Populus nigara was the highest, reaching 800 U · g-1 and 103 U · g-1 . min-i respectively,while Acacia famesiana (Linn.)Willd decreased when the lead stress was over 300 mg ·kg-1. There was significantly different activity of CAT among four woody species. All the results showed that there were different responses on lead-stress among four woody species and their anti-lead pollution ability was Populusdeltoides x Populus nigara 〉 Loropetalum chinese ( R. Rr. ) Oliv. 〉 Platycladus orientalis ( L. ) Endll 〉 Acacia famesiana ( Linn. ) Willd.关键词
铅胁迫/酶/木本植物Key words
Lead stress/Enzyme system/Woody plants分类
农业科技引用本文复制引用
李二龙..铅胁迫对4种木本植物酶保护系统的影响[J].四川林业科技,2012,33(6):50-53,4.基金项目
四川省“十一五”重点公益性项目：四川主要农区面源污染控制与污染土壤生态修复技术与示范（2007NGY006）资助. （）
