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ID:36548218
大小:4.97 MB
页数:101页
时间:2019-05-11
《甜菜抗丛根病信号转导机制的研究--着重于SA、CA2信号分子的研究》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、内蒙古农业大学博士学位论文甜菜抗丛根病信号转导机制的研究——着重于SA、Ca<'2+>信号分子的研究姓名:陈贵华申请学位级别:博士专业:植物学指导教师:张少英20090601量,增强代谢,提高甜菜对丛根病的抗性,Ca2+.CaM系统在甜菜抗丛根病信号转导过程中起重要作用。本课题其它信号分子的研究工作正在进行中。关键词:甜菜;丛根病;信号转导;SA;H202;Ca-CaMStudiesonSignalTransductionM£chanismsoftheResistancetoRhizomaniawithEmphasisonS
2、ignalingofSalicylicAcidandC一十inSugarBee.tAbstractSugarbeet(Betavutgaris三.)is锄importantsugarcropintheworld,butitsyieldandqualityareattackedseverelybymanydiseases.Sugarbeetrhizomaniadiseaseisthebestseveriousinthesugarbeet.ItcausedbyBeetnecroticyellowveinvirusandtrans
3、mittedbythesoil-borneparasitePolymyxabeta.Forsolutingrhizomaniadisease,ThemechanismofresistancetoRhizomaniawasinvestigatedinsugarbeet.ThesignalfunctionofthesignaltransductionintroductionofSA、H202andCa2+assignalmoleculeandsignaltransductionprocesswereattractedmoreat
4、tentionalsostudied.Theresultsshowedasfollows:.1.EffectofRhizomaniaonantioxidantsystem(Superoxidedismutase.SOD;PeroxidasePOD)andHydrogenperoxide(H202)、hyp、ligninofsugarbeetcellwallwerestudied.111eresultshowedthatthecontentH202washigherthanthatofthenormalgrowthcondit
5、ion;UndertheinfectedofRhizomania,SODactivity、PODactivity、thecontentofligninandhypofresistantvarietieswerehigherthansusceptiblevarieties.TKsresultshowed:thereexistacloserelationshipbetweenresistancetoRhizomaniaandthecontentH202ofcellwallonshgarbeet.2.nlesalicylicaci
6、dplaysailimportantroleinplantsdiseaseresistance.EffectsofrhizomaniaOffthecontentofsalicylicacid,pathogenesis-relatedprotein,H202,lig血andCatalase(CAT)activity,Phenyllalanineammonialyase(PAL)activityofsugarbeetwerestudied.mresultshowedthatthecontentsalicylicacid,H202
7、,pathogenesis—relatedprotein,ligninwerehigherthanthatofthenormalgrowtheondition;Undertheinfectedofrhiaomania,Catalase(CAT)activity,Phenyllalanineammonialyase(PAL)activityofresistantvarietieswerehigherthansusceptiblevarieties.Catalase(CAT)activity,Phenyllalanineammo
8、nialyase(PAL)activity.Thisresultshowed:salicylicacidistheoneofsisaltransduction.3.Effectsof3inhibitorsofCa2+(EGTA,LaClsandW7)onthecontentoCalmomd
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