硒对箭叶淫羊藿有害元素吸收及黄酮类成分含量的影响  

Effects of selenium on harmful element absorption and flavonoid content in Epimedium sagittatum(Sieb.et Zucc.)Maxim

作　　者：陈春丽 王斌[1,2] 王恩 余海琼 王佳楠 董静洲 张燕君 Chen Chunli;Wang Bin;Wang En;Yu Haiqiong;Wang Jia'nan;Dong Jingzhou;Zhang Yanjun(Wuhan Polytechnic University,School of Selenium Science and Engineering,Wuhan 430074,China;Wuhan Botanical Garden,Chinese Academy of Sciences,Wuhan 430074,China;Hubei Enshi Tujia Miao Autonomous Prefecture Xianfeng County Agriculture and Rural Affairs Bureau,Enshi,Hubei 444300,China)

机构地区：[1]武汉轻工大学硒科学与工程现代产业学院,武汉430074 [2]中国科学院武汉植物园,武汉430074 [3]湖北恩施土家族苗族自治州咸丰县农业农村局,湖北恩施444300

出　　处：《植物科学学报》2024年第6期800-805,共6页Plant Science Journal

基　　金：国家自然科学基金项目(31670346,32071675,32270403);中国科学院战略生物资源计划项目(KFJ-BRP-007-016)。

摘　　要：以亚硒酸钠为外源硒,采用叶面和土壤施肥两种方式进行富硒栽培,研究硒对箭叶淫羊藿(Epimedium sagittatum(Sieb.et Zucc.)Maxim)吸收铅(Pb)、镉(Cd)、汞(Hg)、砷(As)等有害元素的影响,以及对其总黄酮、淫羊藿苷和朝藿定A、朝藿定B、朝藿定C含量的影响。结果显示:(1)土壤施硒时,除As外,10 mg/kg处理组可抑制箭叶淫羊藿对有害元素的吸收,更高浓度的硒则促进有害元素的吸收;叶面施硒时,4种元素的吸收均受到抑制,且具有剂量效应。(2)箭叶淫羊藿富硒效果显著,叶片中的硒含量随硒处理浓度的升高而增加;同时,叶面施硒肥可促进箭叶淫羊藿叶片的生长。(3)硒处理可促进黄酮类化合物的积累,且呈浓度依赖性关系。研究结果表明,叶面施硒能减少有害元素的积累,有利于药材质量的提升,未来可作为箭叶淫羊藿药材开发利用的新途径。Sodium selenite was applied as a selenium fertilizer for selenium-enriched cultivation of Epimedium sagittatum(Sieb.et Zucc.)Maxim.This study investigated the effects of selenium on the absorption of Pb,Cd,Hg,and As,as well as on the accumulation of flavonoids,such as icariin,epimedin A,epimedin B,and epimedin C.Results showed that:(1)At a soil selenium concentration of 10 mg/kg,the uptake of harmful elements by E.sagittatum was inhibited,except for As,while higher selenium concentrations promoted the absorption of all harmful elements.In contrast,foliar selenium application inhibited the absorption of all four harmful elements in a dose-dependent manner.(2)Selenium enrichment in E.sagittatum showed a significant dose-dependent relationship with selenium content,and foliar selenium application promoted leaf growth.(3)Selenium enrichment dose dependently increased the accumulation of flavonoids in E.sagittatum.In conclusion,foliar selenium application may reduce the accumulation of harmful elements in E.sagittatum and improve the quality of Epimedium herbs,presenting a new approach for their development and utilization.

关 键 词：亚硒酸钠 箭叶淫羊藿 有害元素 黄酮类化合物 

分 类 号：X173[环境科学与工程—环境科学]