Adaptation to high zinc depends on distinct mechanisms in metallicolous populations of Arabidopsis halleri

Adaptation to high zinc depends on distinct mechanisms in metallicolous populations of Arabidopsis halleri

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时间:2019-08-06

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1、ResearchAdaptationtohighzincdependsondistinctmechanismsinmetallicolouspopulationsofArabidopsishalleri12111M.SolSchvartzman,MassimilianoCorso,NazeerFataftah,MaximeScheepers,CecileNouet,33121BernardBosman,MoniqueCarnol,PatrickMotte,NathalieVerbruggenandMarcHanikenne12InBioS-PhytoSystems,FunctionalG

2、enomicsandPlantMolecularImaging,UniversityofLiege,LiegeB-4000,Belgium;PhysiologyandPlantMolecularGenetics,FreeUniversityofBrussels,3Brussels1050,Belgium;LaboratoryofPlantandMicrobialEcology,DepartmentofBiology,EcologyandEvolution,UniversityofLiege,LiegeB-4000,BelgiumSummaryAuthorforcorresponde

3、nce:Zinc(Zn)hyperaccumulationandhypertolerancearehighlyvariabletraitsinArabidopsisMarcHanikennehalleri.MetallicolouspopulationshaveevolvedfromnearbynonmetallicolouspopulationsinTel:+3243663844multipleindependentadaptationevents.Todeterminewhethertheseeventsresultedinsimi-Email:marc.hanikenne@ulie

4、ge.belarordivergentadaptivestrategiestohighsoilZnconcentrations,wecomparedtwoA.halleriReceived:8September2017metallicolouspopulationsfromdistantgeneticunitsinEurope(Poland(PL22)andItaly(I16)).Accepted:14November2017Theionomic(InductivelyCoupledPlasmaAtomicEmissionSpectroscopy(ICP-AES))andtranscri

5、ptomic(RNAsequencing(RNA-Seq))responsestogrowthat5and150lMZnwereNewPhytologist(2018)analyzedinrootandshoottissuestoexaminethecontributionofthegeographicoriginanddoi:10.1111/nph.14949treatmenttovariationamongpopulations.TheseanalyseswereenabledbythegenerationofareferenceA.halleritranscriptomeassemb

6、ly.Thegeneticunitaccountedforthelargestvariationinthegeneexpressionprofile,whereasKeywords:Arabidopsishalleri,divergentevolution,hyperaccumulation,intraspecificthetwopopulationshadcontrastingZnaccumulationphenotypesandsharedlittlecommonvariation,irondeficiencyresponse,referenceresponsetotheZntreatme

7、nt.ThePL22populationdisplayedanirondeficiencyresponseattranscriptome,zinc.highZninrootsandshoots,whichmayaccountforhigherZnaccumulation.Bycontrast,I16,originatingfromahighlyZn-contaminatedsoil,stronglyrespondedtoc

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