Trizol法提取植物总的RNA及反转录可用于RT-PCR【中文版】一、植物总RNA的提取抽提RNA所用的研钵酒精灼烧5-10min或灭菌.,器皿均高温高压灭菌,以去除RNA酶,所有试剂都保证没有RNA酶污染。1)1.5ml离心管,取0.1g组织在液氮中研磨至粉末,立即加入1mlTrizol,涡旋充分混匀后放置2min。2)加0.2体积(氯仿Chloroform),剧烈振荡15s(vortex),室温放置3min(或不放置,直接离心)。3)4℃,12000rpm离心5min,样品会分成3层,取上层水相,取上清。4)加等体积的异丙醇,混匀,4℃放置10min以上。或可以-80℃过夜。5)4℃,12000rpm离心20min,4℃弃上清,管底管侧形成胶状沉淀(可看到白色沉淀)。6)加1ml75%乙醇,充分溶解沉淀。4℃,12000rpm离心5min。倒掉上清,用移液器吸干。7)晾干约10min。(不要晾太长时间,看不到水就可以加灭菌水)8)加50μl灭菌的超纯水,65℃溶解,-20℃(最好-80℃)保存。(注:要是处理DNase就不能加这么多水。可以加5μl)整个提取步骤最好咋在4℃或冰上完成二、DNaseI处理消化植物总RNA中的基因组DNA1)将上述全部提取的植物总RNA5μl,然后顺序加入1μl10×缓冲液,1μlDNase,3μlRNase-free水,总体积10μl,充分混匀后,37℃温育30min。2)加入300ul灭菌水提高体积,然后加入300ulPCI,vortex;4℃,12000rpm离心5min;3)加入1/10体积3M醋酸钠(autoclaved)pH5.2,和2倍体积的100%EtOH;(-20℃,10-30min或可以-80℃过夜)4)4℃,12000rpm离心15min,6)75%EtOH,300ul,12000rpm5min7)dry(10-15min)andadd30-50ulofddH2O三、反转录cDNA1)在上述总体积为11μl反应液中加入1μlOligo(dT)18引物4μl5×缓冲液,2μldNTP,1μl反转录酶,1μlRNase抑制剂,总体积20μl,充分混匀后,42℃温育1-1.5hr。2)70℃温育10min,终止反应RNAextractionfromplantsusingTRIZOLandreversetranscription【Englishvision】RNAextractionfromplants:1.Prepare1.5mlSafe-lockEppendorftubesandadd0.1gtissueofplant,grindinliquidnitrogen,Immediatelyadd1mlofTRIZOLtothehomogenizedtissueatRTfor2min.2.Add0.2mlofchloroformper1mlTRIZOL10.Shakevigorouslybyhandfor15seconds.11.IncubateatRTfor3min.12.Centrifugethesamplesat13000rpmfor15minat4°Cforphaseseparation.13.Transfertheaqueousupperphasetonewtubes(ca50-60%ofTRIZOLvol.)14.PrecipitateRNAbymixingwith0.5mlisopropanolper1mlTRIZOL15.IncubateatRTfor10minutes16.Centrifugethesamplesat13000rpmfor10minat4°CtoobtainpelletsRNAwash:17.Removesupernatantandwashpelletswith1ml75%EtOH(dilutedwithDEPCtreatedwater).18.Vortexonceandcentrifugeat7500xgfor5minat4°C19.Discardsupernatantanddrypelletsfor5minatRT(orinspeed-vac)20.DissolvepelletsinDEPCtreatedwater21.Incubateat55°Cfor10minutes.Storeat–80°Cuntiluse.3)4degree,12000rpm,5min4)add1/10volumeof3MSodiumacetate(autoclaved)pH5.2,and2volumeof100%EtOH.4)Storeat-80degreeovernightormorelonger.5)12000rpm,4degree,15min6)75%EtOH,300ul,12000rpm5min7)dryandadd30-50ulofddH2O