海洋科学2024，Vol.48Issue(9)：1-12,12.DOI:10.11759/hykx20231023001
多种痕量元素对鳗草毒性的半效应浓度研究:以地上部分伸长长度和最大光量子产量为指标
Study on toxicity by half-effect concentrations of trace ele-ments in eelgrass:aboveground elongation length and maxi-mum light quantum yield as indexes
摘要
Abstract
Eelgrass has a complete structure consisting of roots,stems,and leaves and completes its entire life cycle in seawater.In this study,the toxic effects of sodium arsenite(NaAsO2),sodium chromate tetrahydrate(Na2CrO4·4H2O),mercury chloride(HgCl2),nano-silver(AgNPs),nickel sulfate hexahydrate(NiSO4·6H2O),and zinc sulfate heptahy-drate(ZnSO4·7H2O)on eelgrass were studied through laboratory simulation experiments.The different concentrations used for inducing stress were NaAsO2(0,1,2,4,and 8 mg/L),Na2CrO4·4H2O(0,20,40,80,and 120 mg/L),HgCl2(0,0.4,0.5,0.6,and 0.7 mg/L),AgNPs(0,1,4,7,and 10 mg/L),NiSO4·6H2O(0,1×103,3×103,5×103,and 10×103 mg/L),and ZnSO4·7H2O(0,0.01×103,0.05×103,0.1×103,0.5×103 mg/L).The partial elongation length and maximum light quantum yield(Fv/Fm)were inhibited by all six elements.The half-effect concentrations of NaAsO2,Na2CrO4·4H2O,HgCl2,AgNPs,NiSO4·6H2O,and ZnSO4·7H2O were 2.1 mg/L(As:16.0 μmol/L)and 89.8 mg/L(Cr:384.6 μmol/L),0.65 mg/L(Hg:2.2 μmol/L),8.1 mg/Ml(Ag:75.0 μmol/L),3.0×103 mg/L(Ni:1.1×104 μmol/L),7.5×104 mg/L(Zn:2.6×105 μmol/L).The toxicity was in the order of Hg>As>AgNPs>Cr>Ni>Zn.关键词
鳗草/痕量元素/生长/叶绿素荧光/EC50Key words
eelgrass/trace elements/plant growth/chlorophyll fluorescence/EC50分类
海洋科学引用本文复制引用
王新华,张玉,刘明杰,徐少春,岳世栋,张晓梅,周毅..多种痕量元素对鳗草毒性的半效应浓度研究:以地上部分伸长长度和最大光量子产量为指标[J].海洋科学,2024,48(9):1-12,12.基金项目
国家重点研发计划专项(2022YFD2401300) （2022YFD2401300）
国家自然科学基金项目(32270405 （）
42206142) National Key Research and Development Program,No.2022YFD2401300 （）
National Natural Science Foundation of China,Nos.32270405,42206142 （）
