中国水稻科学(ChinJRiceSci),2023,37(5):486－496486http://www.ricesci.cnDOI:10.16819/j.1001-7216.2023.230203硅对镉胁迫下水稻苗期抗氧化酶系统及镉离子吸收和转运相关基因表达水平的影响黄奇娜1,#徐有祥2,#林光号3党洪阳3郑振权1张燕1王晗1邵国胜1,*尹献远4,*(1中国水稻研究所，杭州310006；2龙游县农业农村局，浙江衢州324400；3常山县农业农村局，浙江衢州324200；4衢州市农业农村局，浙江衢州324000.#共同第一作者；*通信联系人，email:shaoguosheng@caas.cn；yyxxyy1688@163.com)EffectsofSilicononAntioxidantEnzymeSystemandExpressionLevelsofGenesRelatedtoCd2+UptakeandTransportationinRiceSeedlingsUnderCadmiumStressHUANGQina1,#,XUYouxiang2,#,LINGuanghao3,DANGHongyang3,ZHENGZhenquan1,ZHANGYan1,WANGHan1,SHAOGuosheng1,*,YINXianyuan4,*(1ChinaNationalRiceResearchInstitute,Hangzhou310006,China;2AgriculturalandRuralBureauofLongyouCounty,Quzhou324400,China;3AgriculturalandRuralBureauofChangshanCounty,Quzhou324200,China;4AgriculturalandRuralBureauofQuzhou,Quzhou324000,China;#Theseauthorscontributedequallytothiswork;*Correspondingauthor,email:shaoguosheng@caas.cn;yyxxyy1688@163.com)Abstract:【Objective】Toelucidatetheeffectsofexogenoussilicon(Si)onplantheight,dryweight,antioxidantenzymesystem,andtheexpressionlevelsofCd2+relatedgenesinriceundercadmium(Cd)stress,soastolayatheoreticalbasisforclarifyingthemechanismofSiinalleviatingCdtoxicityinrice.【Method】IndicariceFupin36(FP36)andZhongjiazao17(ZJZ17)werehydroculturedundertwoCd2+concentrations(0,5µmol/L)andthreeSitreatments(0,10µmol/L,1mmol/L).Theagronomictraits,antioxidantenzymeactivities,andtheexpressionlevelsofCd2+uptake/transport-relatedgeneswereanalyzed.【Result】Cadmiumstresssignificantlyinhibitedtheagronomictraitsandactivitiesofantioxidantenzymes(superoxidedismutase,peroxidase,catalase,andascorbicacidoxidase)ofZJZ17andFP36,butexogenousSiadditioncouldeffectivelyalleviatethetoxicityofCdtorice,andenhancetheactivitiesofantioxidantenzymes.Moreover,1mmol/LSitreatmentexertedabetteralleviatingeffectonCdstressthan10µmol/LSi.Inaddition,Cdstressalsoaffectedt...
