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1、南方農(nóng)業(yè)學(xué)報JournalofSouthernAgricultureISSN2095—1191;CODENNNXAABhttp://www.nfnyxb.cnDOI:10.3969/j:issn.2095—1191.2015.5.745轉(zhuǎn)基因煙草中外源基因?qū)崟r熒光定量PCR檢測方法的建立王盛,謝芝勛+,謝麗基,謝志勤,黃莉,羅思思,鄧顯文,黃嬌玲,劉加波(廣西獸醫(yī)研究所/廣西畜禽疫苗新技術(shù)重點(diǎn)實(shí)驗(yàn)室.南寧530001)摘要:【目的】建立SYBRGreenI實(shí)時熒光定量PCR檢測轉(zhuǎn)基因煙草中外源基因拷貝數(shù)的方法,為轉(zhuǎn)基因植物中外源基因拷貝數(shù)的檢測提供參考。【方法】采
2、用SYBRGreenI實(shí)時熒光定量PCR方法,檢測轉(zhuǎn)基因煙草中外源綠色熒光蛋白基因(GFP)的拷貝數(shù),以煙草單拷貝的內(nèi)源核糖核酸還原酶基因(RNR2)作為內(nèi)參基因,建立相對定量的雙標(biāo)準(zhǔn)曲線法檢測轉(zhuǎn)基因煙草中外源基因拷貝數(shù)的方法?!窘Y(jié)果】構(gòu)建RNR2基因、餅P基因?qū)崟r熒光定量PCR的標(biāo)準(zhǔn)曲線,分別為尸.0.2858x+5.6695和y----0.2826x+2.1048,R2分別為0.9994和0.9989,相關(guān)性較高。在檢測的5株轉(zhuǎn)基因煙草中Gj:隧因的拷貝數(shù)分別為5、8、19、28和45,非轉(zhuǎn)基因煙草植株的GFP基因拷貝數(shù)為0?!窘Y(jié)論】建立的轉(zhuǎn)基因煙草中外源基因
3、SYBRGreenI實(shí)時熒光定量PCR檢測方法具有簡單、快速、準(zhǔn)確等優(yōu)點(diǎn),可用于基因工程中對優(yōu)良轉(zhuǎn)化植株的篩選及外源基因表達(dá)量的快速檢測和定量分析。關(guān)鍵詞:轉(zhuǎn)基因煙草;雙標(biāo)準(zhǔn)曲線法;外源基因;拷貝數(shù);SYBRGreenI實(shí)時熒光定量PCR中圖分類號:Q786文獻(xiàn)標(biāo)志碼:A文章編號:2095—1191(2015)05—0745—05Detectionmethodofexogenousgeneintransgenictobaccobyreal-timefluorcquantitativePCRreal-timenuorescencequantitativeWANGSh
4、eng,XIEZhi-xun+,XIELi-ji,XIEZhi-qin,HUANGLi,LUOSi—si,DENGXian—wen,HUANGJiao-ling,LIUJia—bo(GuangxiVeterinaryResearchInstitute/GuangxiKeyLaboratoryofAnimalVaccinesandNewTechnology,Nannmg530001,China)Abstract:【Objective]TheSYBRGreenIreal-timequantitativePCRmethodfordetectingcopynumberof
5、exogenousgeneintransgenictobaccowasestablishtoprividereferencefordetectingcopynumberofexogenousgeneintransgenicplant.【Method]BySYBRGreenIreal—timefluorescencequantitativePCRtechnique,thecopynumberofgreen—fluores—centproteingene(GFP)asexogenousgeneintransgenictobaccowasdetected,takinge
6、ndogenousribonucleotidereductasegene(RNR2)oftobaccoasreferencegene.ThentwostandardCurvemethodofrelativequantificationwasestablishtode—tectcopynumberofexogenousgeneintransgenictobacco.【Resuh】ThestandardcurvesofGFPgeneandRNR2genewereconstructed.whichwerey:一0.2826x+2.1048andy=一0.2858x+5.
7、6695,respectively,andthecorrelationeoefficientswere0.9994and0.9989.Thecopynumbersofthefiveputativetransgenictobaccoswere5,8,19,28and45,respec—tively,andthatofnon—transgenictobaccowas0.【Conclusion】TheSYBRGreenIreal-timequantitativePCRmethodfordetectingcopynumberofexogenousgeneisrapid,c
8、onven