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ID:40705857
大小:3.81 MB
页数:14页
时间:2019-08-06
《2015-PCaP2 regulates nuclear positioning in growing Arabidopsis thaliana root hairs by modulating filamentous actin organization.》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、PlantCellRep(2015)34:1317–1330DOI10.1007/s00299-015-1789-6ORIGINALPAPERPCaP2regulatesnuclearpositioningingrowingArabidopsisthalianaroothairsbymodulatingfilamentousactinorganization11111YanZhang•ErfangKang•MingYuan•YingFu•LeiZhuReceived:15February2015/Revi
2、sed:23March2015/Accepted:31March2015/Publishedonline:1May2015ÓSpringer-VerlagBerlinHeidelberg2015AbstractKeywordsNucleusRoothairTipgrowthActinKeymessagePCaP2playsakeyroleinmaintainingfilamentActin-bindingproteinArabidopsisthalianathenucleusatarelativ
3、elyfixeddistancefromtheapexduringroothairgrowthbymodulatingactinfilaments.AbstractDuringroothairgrowth,thenucleuslocalizesataIntroductionrelativelyfixeddistancefromtheapex.InArabidopsisthaliana,thepositionofthenucleusismainlydependentonRoothairsaretubularpr
4、otrusionsonrootepidermalcells.theconfigurationofmicrofilaments(filamentousactin).TheformationofroothairsexpandstherootsurfaceareaHowever,themechanismsunderlyingtheregulationofactinandfacilitatestheuptakeofwaterandnutrientsfromthedynamicsandorganizationfornu
5、clearpositioningarelargelysurroundingenvironment(Dolanetal.1994;Ketelaarandunknown.Inthepresentstudy,wedemonstratedthatplasmaEmons2001,2009;Libaultetal.2010).Roothairsexhibit2?membrane-associatedCabindingprotein2(PCaP2)in-typicaltipgrowth,whichisregulate
6、dbyavarietyoffac-fluencesthepositionofthenucleusduringroothairgrowth.tors,includingcytoskeletonelements,vesiculartransport,AbnormalexpressionofPCaP2inpcap2andPCaP2over-andcellwallsynthesisprocesses(CarolandDolan2002;expressionplantsledtothedisorganization
7、ofactinfilaments,Dietetal.2006;Ovecˇkaetal.2005;Peietal.2012).Fineratherthanmicrotubules,intheapexandsub-apicalregionsfilamentousactininthesub-apicalregionofgrowingrootofroothairs,whichresultedinaberrantroothairgrowthhairslikelyplaysanimportantroleinthereg
8、ulationofrootpatternsandmisplacednuclei.AnalysesusingaPCaP2mu-hairtipgrowthbydeliveringnewmembraneandcellwalltantproteinrevealedthatactin-severingactivityisessentialmaterialtothegrowthsite(Milleretal.1999;Fanetal.forthefun
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