广西植物2011，Vol.31Issue(5)：659-663,626,6.DOI:10.3969/j.issn.1000-3142.2011.05.017
两种光照条件下白花泡桐幼苗对Pb胁迫的生理响应研究
Effect of two light irradiances on physiological response of Paulownia f ortunei seedling roots to Pb stress
摘要
Abstract
The physiological responses of P. Fortunei seedling roots to Pb stress under natural light and 50% natural light treatments were investigated. Results showed that production rate of superoxide anion, hydrogen peroxide and MDA contents consistently increased with the increase of added Pb. Compared to natural light treatment, their increasing trends were less sharper under 50% natural light treatment. Under natural light treatment,the activities of SOD,CAT and APX increased firstly and then decreased with the increase of added Pb,while the activities of POD consistently increased. At 50% natural light treatment, all the antioxidant enzyme activities consistently increased with the increase of added Pb. The activities of SOD and POD under 50% natural light treatment were higher than those under natural light treatment. Results suggested that the decrease of light irradiance relieved the oxidative damage of Pb stress to the roots of P. Fortunei.关键词
光/铅/白花泡桐/抗氧化性Key words
light/ Pbj Pauloumia fortunei/ antioxidant分类
生物科学引用本文复制引用
郑巧巧,刘相宁,李月灵,罗兴,付嵩君,王江..两种光照条件下白花泡桐幼苗对Pb胁迫的生理响应研究[J].广西植物,2011,31(5):659-663,626,6.基金项目
浙江省自然科学基金(Y5100016) （Y5100016）
台州学院大学生科研项目(10XS20)[Supported by the Natural Science Foundation of Zhejiang Province,China(5100016) （10XS20）
the Student Science Foundation of Taizhou University(10XS20)] （10XS20）
