Salt-induced/repressed genes were isolated at the transciption level in P.euphratica using subtractive hybridization technique.About 40 cDNA fragments were obtained with polyacrylamide gel electrophoresis from +6/-6 t...Salt-induced/repressed genes were isolated at the transciption level in P.euphratica using subtractive hybridization technique.About 40 cDNA fragments were obtained with polyacrylamide gel electrophoresis from +6/-6 to +8/-8 cDNA hybridization cycles,which will be used for screen and cloning salt-tolerant genes of P.eupharatica and studying the mechanism of salt-tolerant.展开更多
目的:对忍冬不同器官,即花蕾、叶和茎中HQT(hydroxycinnamoyl CoA quinate hydroxycinnamoyl transfer-ase)基因的相对表达量进行研究,以揭示HQT基因与忍冬绿原酸生物合成之间的相关性。方法:利用半定量RT-PCR方法对忍冬不同器官中的内...目的:对忍冬不同器官,即花蕾、叶和茎中HQT(hydroxycinnamoyl CoA quinate hydroxycinnamoyl transfer-ase)基因的相对表达量进行研究,以揭示HQT基因与忍冬绿原酸生物合成之间的相关性。方法:利用半定量RT-PCR方法对忍冬不同器官中的内参Actin基因以及HQT基因进行测定,通过琼脂糖凝胶电泳对PCR结果进行分析。结果:忍冬不同器官中Actin基因条带亮度比较接近,而HQT基因条带亮度差异较大,花蕾中HQT基因条带最亮,叶中次之,而茎中HQT基因条带非常微弱。此结果与绿原酸在忍冬不同器官中的含量相一致。结论:忍冬HQT基因的表达与绿原酸的合成之间可能存在有必然的联系。展开更多
文摘Salt-induced/repressed genes were isolated at the transciption level in P.euphratica using subtractive hybridization technique.About 40 cDNA fragments were obtained with polyacrylamide gel electrophoresis from +6/-6 to +8/-8 cDNA hybridization cycles,which will be used for screen and cloning salt-tolerant genes of P.eupharatica and studying the mechanism of salt-tolerant.
文摘利用正交试验方法优化得到绿豆皮中总黄酮的最佳提取工艺。以芦丁为标准品,采用分光光度法在510 nm下对提取液中总黄酮含量进行测定。通过提取时间、乙醇体积分数、提取温度、固液比与提取次数5个因素的单因素试验,设计L16(45)正交试验筛选最佳工艺。结果表明:提取时间150 m in,乙醇体积分数50%,提取温度80℃,固液比1∶10,提取次数2次,绿豆皮中总黄酮的提取量为3.879 mg/g,平均回收率为100.84%,精密度试验RSD为0.18%。
文摘目的:对忍冬不同器官,即花蕾、叶和茎中HQT(hydroxycinnamoyl CoA quinate hydroxycinnamoyl transfer-ase)基因的相对表达量进行研究,以揭示HQT基因与忍冬绿原酸生物合成之间的相关性。方法:利用半定量RT-PCR方法对忍冬不同器官中的内参Actin基因以及HQT基因进行测定,通过琼脂糖凝胶电泳对PCR结果进行分析。结果:忍冬不同器官中Actin基因条带亮度比较接近,而HQT基因条带亮度差异较大,花蕾中HQT基因条带最亮,叶中次之,而茎中HQT基因条带非常微弱。此结果与绿原酸在忍冬不同器官中的含量相一致。结论:忍冬HQT基因的表达与绿原酸的合成之间可能存在有必然的联系。
