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1、EcotoxicologyandEnvironmentalSafety74(2011)776–786ContentslistsavailableatScienceDirectEcotoxicologyandEnvironmentalSafetyjournalhomepage:www.elsevier.com/locate/ecoenvPlanthightolerancetoexcessmanganeserelatedwithrootgrowth,manganesedistributionandantioxidativeenzymeactivityinthreegrapecultivars
2、a,ba,b,ncaaaDonglingMou,YinanYao,YongqingYang,YuanmingZhang,ChangyanTian,VarenyamAchalaKeyLaboratoryofBiogeographyandBioresources,XinjiangInstituteofEcologyandGeography,ChineseAcademyofSciences,818SouthBeijingRoad,Urumqi830011,PRChinabCollegeofLifeSciences,GuizhouUniversity,Guiyang550025,PRChinac
3、CollegeofLifeSciences,ChongqingNormalUniversity,Chongqing400047,PRChinaarticleinfoabstractArticlehistory:Thecuttingsofgrape(VitisviniferaLinn.)wereexposedtoHoagland’ssolutioncontainingfivedifferentReceived21July2010manganese(Mn)concentrationstoinvestigateMntoxicityandthepossibledetoxifyingresponse
4、s.ThreeReceivedinrevisedformgenotypes(i.e.cultivarsCombiner,JingshouandShuijing)wereusedinpresentstudy.Theresultsshowed25October2010thatgrapespeciesishighlytoleranttoexcessMn.Theplantgrowthisstimulatedbyashighas15orAccepted27October201030mMMn,andthendepressedbyhigherMnlevels.Thegrapetolerancetoex
5、cessMnisrelatedwithplantAvailableonline13November2010capacitytokeepconstantorincreasedrootgrowthaswellastokeephighrootactivity.Also,thegrapeKeywords:couldemploysomeeffectivebutintraspecificstrategiestodetoxifycellularMnstressbyexcludingexcessVitisviniferaMnoutofleaftissuesorbyenhancingantioxidativ
6、ecapacity.Ontheotherhand,thepresentstudyHypertoleranceshowedthatthereexisteddifferent(orcontrast)distributionpatternforexcessMningrape.MajorityofAntioxidativeenzymeMnwastransferredandaccumulatedintheabove-groundpartinCombinerwhileJingshoustoredmostManganesetransferMninrootsystems.Forthefirsttimeou
7、rresultshowedtheextremetoleranceandcontrastperformanceRootgrowthatMntranslocationinanimportantfruitspecieswithrevealedgenomicinformation.&2010ElsevierInc.Allrightsreserved.1.Introduction2000).ThemajorityofthereportedMn
