中国生态农业学报2011，Vol.19Issue(3)：672-675,4.DOI:10.3724/SP.J.1011.2011.00672
紫苏对不同浓度镉胁迫的生理响应
Physiological response of Perilla frutescens(L.)Britt.to cadimium
摘要
Abstract
Hydroponic culture experiments were conducted to study physiological characteristics of Perilla frutescens (L.) Britt.under cadmium stress.The paper analyzed P.frutescens growth, cadmium accumulation and protective enzyme activities in leaf at Cd2+ concentrations of 0 mg·L-1, 2.0 mg·L-1, 5.0 mg·L-1 and 10.0 mg·L-1, respectively.The study showed that the per plant biomass of P.frutescens under cadmium stress dropped by 28.4％, 42.4％ and 66.0％ compared with control (0 mg·L-1 Cd2+), respectively.Extremely significant differences were noted among the different treatments.Per plant cadmium accumulation capacities under the cadmium treatments were 462.4 μg, 705.0 μg and 609.7 μg, with enrichment coefficients of 91.9, 70.0 and 51.1, respectively.This showed the superior ability of P.frutescens to accumulate cadmium or resist cadmium stress.Tests for SOD, POD and CAT enzyme activities further showed significant increases in SOD activity and MDA content in P.frutescens leaves under cadmium treatments.On the other hand, POD and CAT activities significantly dropped with increasing cadmium concentration.High cadmium concentration destructed protective enzyme balance, which restrained growth of P.frutescens.关键词
紫苏/镉胁迫/生理响应/富集系数/镉积累能力/保护酶/丙二醛分类
农业科学引用本文复制引用
谢惠玲,陈爱萍,张凤英,熊颖,陈艳玲,刘杰,周丽英,林瑞余..紫苏对不同浓度镉胁迫的生理响应[J].中国生态农业学报,2011,19(3):672-675,4.基金项目
福建省自然科学基金项(2009J01056)、福建省教育厅基金项目(JA09084)和国家大学生创新性实验计划项目(091038901)资助 （2009J01056）
