Trizol试剂法快速高效提取3种作物不同组织总RNA
文献类型: 中文期刊
作者: 黄诚梅;李杨瑞;杨丽涛;吴建明
作者机构:
关键词: RNA;Trizol试剂法;改良Trizol-异丙醇法;甘蔗;水稻;玉米
期刊名称:南方农业学报
ISSN: 2095-1191
年卷期: 2012 年 43 卷 12 期
页码: 1934-1939
收录情况: CSCD
摘要: 【目的】建立适用于禾本科作物不同组织总RNA的快速、高效提取方法,为进行后续的分子生物学研究奠定基础。【方法】采用Trizol试剂法,通过改变抽提上清液吸取量、沉淀方法及沉淀漂洗次数,对甘蔗、玉米和水稻的叶片、茎尖和根尖的总RNA提取方法进行优化。【结果】与吸取0.4mL上清液相比,吸取0.2mL上清液的总RNA OD260/OD280、OD260/OD230值分别在1.95~2.00和2.11~2.44,所获得的总RNA纯度较高。沉淀漂洗两次的OD260/OD230值(2.11~2.47)明显高于沉淀漂洗1次的总RNA OD260/OD230值(1.01~1.61),总RNA纯度较高。经异丙醇沉淀所得的各材料的总RNA28S、18S和5S谱带清晰,无拖尾现象,总RNA完整性较好;LiCl沉淀法的RNA条带较模糊粘连,5S条带明显弥散,总RNA产率相对较低。以Trizol-异丙醇法提取的甘蔗总RNA为模板进行GAPDH基因片段扩增,所获甘蔗的叶片、茎尖和根尖的GAPDH基因表达丰度很强,无特异扩增,目的片段长度为153bp。【结论】改良Trizol-异丙醇法提取甘蔗、玉米和水稻不同组织的总RNA带型清晰、完整性好、纯度和产率高,适用于快速、高效提取禾本科植物不同组织总RNA。
分类号: S184
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