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1、植物激素的相互作用InteractionofplanthormonesAbstract:planthormoneisanimportantpartofplantphysiology,afteryearsofresearch,nowbasicallymasteredthestructureandfunctionofplanthormonemechanism,accordingtothenatureofplanthormones,hormonelikeplantgrowthregulatorshavebeensynthesized,widelyusedinpro
2、duction,hasachievedgreateconomicbenefitsandsocialbenefits,butplantsareoftenseveralhormonesexistatthesametime,tocontrolanyphysiologicalprocessesofplantgrowthanddevelopmentintheprocessof.Theirexisteneecanpromoteandcoordinateeachother,andcanalsocounteracteachother・Therefore,weconducte
3、danexperimentalstudyandsummarizedtheinteractionsbetweenplanthormones(plantregulators).Keywords:planthormone;auxin;gibberellin;cytokinin;abscisicacid;ethylene;synergism;antagonism1overviewofplanthormonesHormones(plant)isatraceorganicsubstancethatissynthesizedinplantsandcanbemoved,wh
4、ichplaysanimportantroleingrowthanddevelopment・Atpresent,planthormonesfoundinplantsincludeauxinlikeIAA(auxin),gibberellin,GAs(gibberellins),cytokininCTK(cytokinin),abscisicacidABA(abscisin)andethyleneETH(ethylene)・Weusedtocallthemtheclassicfivemajorplanthormones・Inrecentyears,ithasb
5、eenfoundthatnaturalsubstancessuchasrapeoil,jasmonicacid,polyaminesandsalicylicacidplayavarietyofregulatoryrolesinthegrowthanddevelopmentofplants,andhavebeenregardedasquasiplanthormones.1.1auxinDiscoveryof1.1.1auxinC.D.Darwin,whostudiedplanttropismin1880,foundthattheyoungtipofthepla
6、ntwasaffectedbyurdlaterallight,whichspreadtotheelongationzoneofthestem,causingcurvature・In1928,F.W.winter,Holland,isolatedaphysiologicallyactivesubstancefromthetipoftheoatgermbud,calledauxin,whichisthesubstancethatcausescoleoptileelongation.1934HollandF・&getauxincrystallizationfrom
7、humanurine,identifiedasindoleaceticacid・1.1.2auxindistributionConcentratedinthevigorousgrowth,youngparts,suchascerealcoleoptile,dicotstemtop,leaf,pollenandovaryandgrowingfruits,seedsandotherorganswereveryfew;aging・1.1.3auxintransportCuttingsegmentswithcoleoptileprovesthatauxininpla
8、ntsisusuallytransportedonl
