the response of plants to drought stress—the role of dehydrins, chaperones, proteases and protease inhibitors in maintaining cellular protein function

the response of plants to drought stress—the role of dehydrins, chaperones, proteases and protease inhibitors in maintaining cellular protein function

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页数:45页

时间:2018-03-22

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1、45TheResponseofPlantstoDroughtStressChapterTheResponseofPlantstoDroughtStress:TheRoleofDehydrins,Chaperones,ProteasesandProteaseInhibitorsinMaintainingCellularProteinFunctionI.Vaseva,1J.Sabotič,2J.Šuštar-Vozlič,3V.Meglič,3M.Kidrič,2K.Demirevska,1andL.Simova-S

2、toilova1*Correspondingauthor,email:lsimova@mail.bg.1DepartmentofPlantStressMolecularBiology,InstituteofPlantPhysiologyandGenetics,BulgarianAcademyofSciences,Sofia,Bulgaria2DepartmentofBiotechnology,JožefStefanInstitute,Ljubljana,Slovenia3CropandSeedProduction

3、Department,AgriculturalInstituteofSlovenia,Ljubljana,SloveniaAbstractAbioticstresseswithadehydrationcomponent(drought,salt,andfreezing)involve,asacommonfeature,increasednumbersofinactiveproteins–denatured,aggregatedoroxidativelydamaged.Maintainingproteinsinth

4、eirfunctionalconformation,preventingaggregationofnon-nativeproteins,refoldingofdenaturedproteinstotheirnativeconformationandremovalofnon-functionalandpotentiallyharmfulpolypeptidesareallvitalforcellsurvivalunderdehydrationstress.Toachievethis,plantsrespondtod

5、roughtbysynthesisofprotectiveproteinssuchasdehydrinsandchaperonesandbydegradationofirreversiblydamagedproteinsbyproteases.Herewereviewtheimportantcellularfunctionsofdehydrins,chaperones,proteasesandproteaseinhibitors,togetherwiththeirroleintheresponsetodrough

6、t,thatmakethempotentialbiochemicalmarkersforassessingdroughttolerance.45TheResponseofPlantstoDroughtStress1.IntroductionDroughtisthemostwidespreadabioticstressintheplantworld.Itreducesyieldsandthreatensthesurvivalofmanyfieldcrops(Passioura,2007,Xoconostle-Cáz

7、aresetal.,2011).Thepossibilityofincreasingdroughttoleranceincropplantshasthereforebeenactivelypursued(Blum1996,Lafitteetal.,2007).Ofthevariousapproachesthathavebeenusedtoaddresstheproblem,plantbreeding,eitherconventionalorinvolvinggeneticengineeringisaneffect

8、iveandeconomicmeansoftailoringcropstogrowsuccessfullyinwater-sparseenvironments(Ashraf,2010).Fortheirexecution,however,suchapproachesrequirebasicknowledge,atthestructuralandmolecularlevel

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