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1、中国水稻科学(ChinJRiceSci),２０１６,３０(４):３８０－３８８http://www．ricesci．cn３８０DOI:１０．１６８１９/j．１００１Ｇ７２１６．２０１６．６０３１不同镉浓度处理下水稻植株镉含量变化及其镉调控相关基因表达分析周全王宏张迎信董青孟帅曹立勇邵国胜∗沈希宏∗(中国水稻研究所,杭州３１０００６;∗通讯联系人,EＧmail:shaoguosheng＠caas．cn;xihongshen＠１２６．com)ChangesinCadmiumConcentrationinRicePlantsUnderDifferentCadmium
2、LevelsandExpressionAnalysisofGenesRetatedtoCadmiumRegulationZHOUQuan,WANGHong,ZHANGYingＧxin,DONGQing,MENGShuai,CAOLiＧyong,SHAOGuoＧsheng∗,SHENXiＧhong∗(ChinaNationalRiceResearchInstitute,Hangzhou３１０００６,China;∗Correspondingauthor,EＧmail:shaoguosheng＠caasc．n;xiＧhongshen＠１２６c．om)ZHOUQuan
3、,WANGHong,ZHANGYingxin,etal．Changesincadmiumconcentrationinriceplantsunderdifferentcadmiumlevelsandexpressionanalysisofgenesretatedtocadmiumregulation．ChinJRiceSci,２０１６,３０(４):３８０Ｇ３８８．Abstract:Usingsixindicaandsixjaponicacultivars,differedincadmiumconcentrationsintheaboveＧgroundparts
4、,thegrowth,heavymetalcontentsandexpressionlevelsofheavymetaltransporterrelatedgeneswerestudiedinahydroponicexperimentatsixcadmiumlevels．Cadmiumstressreducedplantheight,shootdryweightandchlorophyllcontentinriceleaves,inhibitingricegrowth．Significantdifferenceincadmiumcontentinriceroo
5、tsandshootsamongricecultivarswerefoundunderdifferentcadmiumtreatments,andtheresultsshowedthatrootＧtoＧshoottranslocationmaybeakeyprocessthatdeterminethedifferenceincadmiumcontentsbetweenricecultivarsandsubspecies,whilecadmiumabsorptionbyrootshadlittleeffect．Atvariouscadmiumlevels(fro
6、m０．５０to２．００mg/kg),saturationofcadmiumaccumulationinriceshootswerefoundinsomecultivarsthatcadmiumcontentstoppedincreasingorevendecreased．Besides,theexpressionlevelsofOsNRMAP１,OsIRT２andOsNAS２weresignificantlyincreasedatsuchcadmiumtreatment,whichmightbeattributedtotheregulationofricepl
7、ants．Keywords:rice;cadmium;genotype;plantgrowth;geneexpression周全,王宏,张迎信,等．不同镉浓度处理下水稻植株镉含量变化及其镉调控相关基因表达分析．中国水稻科学,２０１６,３０(４):３８０Ｇ３８８．摘要:以地上部镉含量不同的籼稻和粳稻品种各６个为材料,采用水培试验,设置６个镉浓度,研究了不同浓度镉处理对不同水稻品种植株生长、镉含量和相关重金属转运蛋白基因表达水平的影响.结果表明,镉胁迫对水稻生长有抑制作用,表现为苗高、地上部干物质量和叶绿素含量下降.在不同镉浓度处理下,植株根部和地上部的镉含量存在
8、显著的基因型差异,植株中镉从根部向地上
