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1、c11BLBK148-KnightFebruary16,200919:51CharCount=AnnualPlantReviews(2009)36,282297www.interscience.wiley.comdoi:10.1111/b.9781405181891.2009.000011.xChapter11THEROLEOFABSCISICACIDINSTRESSTOLERANCESungHyunCho1,KlausvonSchwartzenberg2,andRalphQuatrano31DepartmentofBio
2、logy,PennsylvaniaStateUniversity,UniversityPark,PA16802,USA2BiozentrumKleinFlottbekundBotanischerGarten,UniversitatHamburgD-22609,¨Germany3DepartmentofBiology,WashingtonUniversity,St.Louis,MO63130-4899,USAAbstract:Mosseshaveevolvedcomplexmechanismstoovercomeabioti
3、cstresses.Thephytohormoneabscisicacid(ABA)playsanimportantroleintheestablishmentofstresstoleranceinvascularplantsaswellasinbryophytes.ABApre-treatmentgreatlyenhancestolerancetodehydration,coldtemperatureandosmoticstressesinthemossPhyscomitrellapatens.Theresponseto
4、abioticstressesandABAinP.patensisaccompaniedbytheaccumulationofsugarsalongwithmorphologicalandphysiologicalchanges.SomeofthegenesregulatedbyABAinP.patensarealsocontrolledbytheABA-signallingpathwayinvascularplants.However,therearegenesexpressedinresponsetoABAandabi
5、oticstressinP.patensthatarenotfoundinseedplants.Withtheabilitytoeasilydeleteandreplacegenesbyhomologousrecombination,aswellasafullysequencedandassembledgenome,P.patenswillprovideanexcellentmodelforstudyingstressbiologyinplants.Keywords:ABAsignalling;abioticstress;
6、abscisicacid;coldstress;dehydration;heavymetal;osmoticstress;stresstoleranceAbbreviations:ABAabscisicacidABREABA-responsiveelementAPDaparticulatedomainbHLHZipbasichelix-loop-helix-zipperdomainCHXcycloheximideDREdehydration-responsiveelementERDearlyresponsivetodehy
7、drationESTexpressedsequencetagFJLfracture-jumplesionFTIRFouriertransforminfraredspectroscopyGCRGprotein-coupledreceptor282c11BLBK148-KnightFebruary16,200919:51CharCount=TheRoleofAbscisicAcidinStressTolerance283GSHglutathioneGSK3/Shaggyglycogensynthasekinase3orsha
8、ggykinaseLEAlateembryogenesisabundantMDHARmonodehydroascorbatereductaseMTmetallothioneinPCphytochelatinPEGpolyethyleneglycolPSIIphotosystemIIROSreactive
