This research was designed to assess the changes in anthocyanin content in grape skins of Vitis amurensis and to explore m RNA transcriptions of 11 structural genes（PAL,CHS3, CHI1, F3H2, F30 H, F3050 H, DFR, LDOX, UF...This research was designed to assess the changes in anthocyanin content in grape skins of Vitis amurensis and to explore m RNA transcriptions of 11 structural genes（PAL,CHS3, CHI1, F3H2, F30 H, F3050 H, DFR, LDOX, UFGT,OMT and GST） related to anthocyanin biosynthesis during grape berry development, by the use of HPLC-MS/MS and real-time Q-PCR analysis. Accumulation of anthocyanins began at veraison, continued throughout the later berry development and reached a peak at maturity. Veraison is the time when the berries turn from green to purple. Expression of PAL, CHI1, and LDOX were up-regulated from 2 to4 weeks after flowering（WAF）, down-regulated from6 WAF to veraison, whereas DFR was up-regulated at8 WAF, and then up-regulated from veraison to maturity.CHS3, F3050 H, UFGT, GST, and OMT were down-regulated from 2 WAF to veraison, and then up-regulated from veraison to maturity. The transcriptional expressions of the11 structural genes also showed positive correlations with the anthocyanin content from veraison to maturity. Positive correlations were also observed between OMT transcriptional level and the content of methoxyl-anthocyanins, and between F3050 H transcriptional level and the content of delphinidin anthocyanins. F3H2 and F30 H expression was up-regulated at 2 WAF. F3H2 expression was down-regulated from 4 WAF to veraison and then up-regulated again from veraison to maturity. F30 H expression was down-regulated at 4 WAF and then up-regulated again from 6 WAF to maturity. F30 H transcriptional level was correlated positively with the cyanidin anthocyanin concentration from veraison to maturity. These results indicate that the onset of anthocyanin synthesis during berry development coincides with a coordinated increase in the expression of a number of genes in the anthocyanin biosynthetic pathway.展开更多
目的：建立并确证实时定量PCR（RT-PCR）定量检测生物基质中质粒DNA的方法,并应用于治疗性核酸疫苗HIV-PV的体内生物分布研究。方法：建立SYBR Green荧光定量PCR绝对定量方法（Q-PCR）,考察方法的特异性、灵敏度、精密度、准确度以及生...目的：建立并确证实时定量PCR（RT-PCR）定量检测生物基质中质粒DNA的方法,并应用于治疗性核酸疫苗HIV-PV的体内生物分布研究。方法：建立SYBR Green荧光定量PCR绝对定量方法（Q-PCR）,考察方法的特异性、灵敏度、精密度、准确度以及生物基质对PCR的抑制效应。小鼠尾静脉注射裸质粒DNA、小鼠尾静脉注射和灌胃2种途径免疫HIV-PV DNA疫苗,考察建立的Q-PCR方法对于不同形式的质粒DNA疫苗以及不同免疫方式的适用性。结果：Q-PCR方法可特异检测目标DNA,定量检测范围为10-10^7拷贝/100 ng基因组DNA（gDNA）,定量下限（LLOQ）为10拷贝/100 ng gDNA。批内和批间精密度分别〈11%和8%;由高至低4种浓度（10^7,10^4,100,10拷贝/100 ng gDNA）QC样品准确度分别为（1.57±0.02）%,（1.60±0.01）%,（2.20±0.02）%和（2.28±0.02）%。用Q-PCR方法成功得到不同形式DNA疫苗和不同免疫途径（尾静脉注射和灌胃HIV-PV疫苗）下该质粒DNA的生物分布模式。结论：利用RT-PCR技术,建立了符合DNA疫苗生物分布研究要求的定量检测生物基质中质粒DNA的方法学,并成功应用于不同质粒DNA疫苗形式和不同免疫途径下的DNA疫苗的生物分布研究。展开更多
实时荧光定量PCR(Real Time Quantitative PCR)是把酶动力学、核酸扩增与杂交、光谱分析和实时检测技术巧妙结合的一项技术;并且广泛应用于病毒学、遗传性疾病、肿瘤和癌症的诊断等方面.因此成为分子生物学研究中的重要工具,本文就此技...实时荧光定量PCR(Real Time Quantitative PCR)是把酶动力学、核酸扩增与杂交、光谱分析和实时检测技术巧妙结合的一项技术;并且广泛应用于病毒学、遗传性疾病、肿瘤和癌症的诊断等方面.因此成为分子生物学研究中的重要工具,本文就此技术研究进展及其应用做一综述.展开更多
基金supported by China Agriculture Research System(CARS-30)Jilin Agricultural Science and Technology College seed fund project(2013-903)
文摘This research was designed to assess the changes in anthocyanin content in grape skins of Vitis amurensis and to explore m RNA transcriptions of 11 structural genes（PAL,CHS3, CHI1, F3H2, F30 H, F3050 H, DFR, LDOX, UFGT,OMT and GST） related to anthocyanin biosynthesis during grape berry development, by the use of HPLC-MS/MS and real-time Q-PCR analysis. Accumulation of anthocyanins began at veraison, continued throughout the later berry development and reached a peak at maturity. Veraison is the time when the berries turn from green to purple. Expression of PAL, CHI1, and LDOX were up-regulated from 2 to4 weeks after flowering（WAF）, down-regulated from6 WAF to veraison, whereas DFR was up-regulated at8 WAF, and then up-regulated from veraison to maturity.CHS3, F3050 H, UFGT, GST, and OMT were down-regulated from 2 WAF to veraison, and then up-regulated from veraison to maturity. The transcriptional expressions of the11 structural genes also showed positive correlations with the anthocyanin content from veraison to maturity. Positive correlations were also observed between OMT transcriptional level and the content of methoxyl-anthocyanins, and between F3050 H transcriptional level and the content of delphinidin anthocyanins. F3H2 and F30 H expression was up-regulated at 2 WAF. F3H2 expression was down-regulated from 4 WAF to veraison and then up-regulated again from veraison to maturity. F30 H expression was down-regulated at 4 WAF and then up-regulated again from 6 WAF to maturity. F30 H transcriptional level was correlated positively with the cyanidin anthocyanin concentration from veraison to maturity. These results indicate that the onset of anthocyanin synthesis during berry development coincides with a coordinated increase in the expression of a number of genes in the anthocyanin biosynthetic pathway.
文摘目的：建立并确证实时定量PCR（RT-PCR）定量检测生物基质中质粒DNA的方法,并应用于治疗性核酸疫苗HIV-PV的体内生物分布研究。方法：建立SYBR Green荧光定量PCR绝对定量方法（Q-PCR）,考察方法的特异性、灵敏度、精密度、准确度以及生物基质对PCR的抑制效应。小鼠尾静脉注射裸质粒DNA、小鼠尾静脉注射和灌胃2种途径免疫HIV-PV DNA疫苗,考察建立的Q-PCR方法对于不同形式的质粒DNA疫苗以及不同免疫方式的适用性。结果：Q-PCR方法可特异检测目标DNA,定量检测范围为10-10^7拷贝/100 ng基因组DNA（gDNA）,定量下限（LLOQ）为10拷贝/100 ng gDNA。批内和批间精密度分别〈11%和8%;由高至低4种浓度（10^7,10^4,100,10拷贝/100 ng gDNA）QC样品准确度分别为（1.57±0.02）%,（1.60±0.01）%,（2.20±0.02）%和（2.28±0.02）%。用Q-PCR方法成功得到不同形式DNA疫苗和不同免疫途径（尾静脉注射和灌胃HIV-PV疫苗）下该质粒DNA的生物分布模式。结论：利用RT-PCR技术,建立了符合DNA疫苗生物分布研究要求的定量检测生物基质中质粒DNA的方法学,并成功应用于不同质粒DNA疫苗形式和不同免疫途径下的DNA疫苗的生物分布研究。
