安徽农业大学学报2017，Vol.44Issue(3)：508-512,5.DOI:10.13610/j.cnki.1672-352x.20170524.025
外源钙离子对铅胁迫下小麦膜脂过氧化和根系活力的影响
Effects of exogenous Ca2+ on membrane lipid peroxidation and root activity of wheat under lead stress
摘要
Abstract
In order to clarify mechanisms of exogenous Ca2+ on membrane lipid peroxidation and root activity of wheat under Pb stress,effects of exogenous different concentrations Ca2+ on chlorophyll content,antioxidant enzyme activity,MDA content,cell membrane permeability and root activity in Xinmai 26 (grow in 1/2 Hoagland) seedlingunder Pb stress were studied.Results showed that the addition of exogenous calcium could alleviate the toxicity of lead stress on wheat more effectively.Compared with Pb treatment,the chlorophyll content increased significantly by the addition of exogenous calcium and it was raised by 77.3％ in the Ca3 treatment;the MDA content and the level of membrane lipid peroxidation decreased obviously and they were decreased by 29.9％ and 24.5％ respectively in the Ca3 treatment;the antioxidant enzyme activities showed different situations,the activities of the SOD and CAT increased by 48.5％ and 85.6％ respectively,while the POD activity decreased by 26.9％ in the Ca3 treatment;the root activity of wheat was restored and the recovery rate was 56.2％ in the Ca3 treatment.Therefore,the toxicity of lead on Wheat could be alleviated using the CaO (regulate pH) and appropriate CaC12.关键词
小麦/铅胁迫/外源钙/膜脂过氧化/根系活力Key words
wheat/lead stress/exogenous calcium/membrane lipid peroxidation/root activity分类
农业科技引用本文复制引用
赵腾飞,刘颖,王尔美,王晴晴,代莉,张云华..外源钙离子对铅胁迫下小麦膜脂过氧化和根系活力的影响[J].安徽农业大学学报,2017,44(3):508-512,5.基金项目
安徽农业大学2014年度生理生态学科骨干培育(2014XKPY-40)资助. （2014XKPY-40）
