生态学杂志2025，Vol.44Issue(4)：1181-1190,10.DOI:10.13292/j.1000-4890.202504.034
三种草本植物对Pb、Zn和Cd复合重金属的胁迫响应及富集特征
Stress response and enrichment characteristics of three herbaceous species to Pb,Zn and Cd compound heavy metals
摘要
Abstract
To screen plants that can tolerate and accumulate high levels of Pb,Zn and Cd compound heavy metals,a pot experiment was conducted with seven combination concentrations of Pb,Zn and Cd.The response of antioxi-dant enzymes(SOD,CAT,POD)and other physiological indicators(MDA and Pro)in leaves of Symphytum offi-cinale,Ricinus communis,and Lolium perenne under the stress of Pb,Zn and Cd compound pollution were exa-mined.The enrichment characteristics(enrichment amount,bioaccumulation factor(BCF),and translocation fac-tor(TF))for Pb,Zn and Cd in different parts of three species were observed.The results showed that SOD of S.officinale and R.communis increased with intensified composite stress of Pb,Zn,and Cd.The SOD of L.perenne increased first and then decreased.The CAT of S.officinale and L.perenne showed the"hormesis effect".The CAT of R.communis decreased gradually.The POD of S.officinale and L.Perenne decreased first and then increased.The POD of R.communis increased first,then decreased and then increased.The MDA of S.officinale showed a de-creasing trend.The MDA of R.communis showed an increasing trend.The MDA of L.perenne was small.The Pro of R.communis and L.perenne showed a pattern of first rising and then falling,while that S.officinale showed a gradu-ally decreasing trend.In general,the SOD,CAT,POD,MDA,and Pro of the three species differed across the concentration gradient(P＜0.05).Based on the enrichment characteristics of Pb,Zn and Cd in the three species,the enrichment amount,BCF and TF of S.officinale for Pb,Zn,and Cd simultaneously achieve the limit require-ments of each index of hyperaccumulator.S.officinale is a potential hyperaccumulating species for Pb,Zn and Cd complex heavy metals and can be used as a preferred plant for remediation of Pb,Zn and Cd contaminated soil.关键词
重金属/超富集植物/土壤修复/植物修复/胁迫响应Key words
heavy metal/hyperaccumulator/soil remediation/phytoremediation/stress response引用本文复制引用
孙旻涵,范拴喜,张楠..三种草本植物对Pb、Zn和Cd复合重金属的胁迫响应及富集特征[J].生态学杂志,2025,44(4):1181-1190,10.基金项目
陕西省科技厅自然科学基金项目(2020SF-438)、宝鸡文理学院博士启动资金资助. （2020SF-438）
