烤后烟叶基因组DNA提取条件优化
The optimization of conditions for the extraction of genomic DNA in flue-cured tobacco
-
摘要: 为解决烤后烟叶基因组DNA提取稳定性差的问题,以烤后烟叶为材料,对CTAB法提取基因组DNA进一步改良优化:对CTAB沉淀缓冲液使用量、裂解时间、Tris平衡酚的处理次数和RNase处理时间4个影响因素进行单因素优化.实验结果表明:CTAB沉淀缓冲液使用DNA溶液体积的1.5倍、裂解时间40 min、Tris平衡酚抽提1次和RNase(10 mg/mL,1μL)处理10 min,能得到主带清晰的烤后烟叶基因组DNA.该方法提取得到的烤后烟叶基因组DNA OD260/OD280为1.7~1.9,OD260/OD230>2.0,35 ng左右基因组DNA即能得到清晰的RAPD和SCAR图谱,适用于以PCR为基础的分子生物学实验.Abstract: The experimental method which improves the CTAB for extracting the genomic DNA in flue-cured tobacco was presented in order to stabilize the extraction of the genomic DNA. Each of the four influencing factors in the CATB, namely, the usage amount of precipitate buffer solution, pyrolysis time,number of processing the Tris phenol and the processing time for RNase were optimized respectively. The results showed that after using CATB precipitate buffer solution with the volume 1.5 times larger than that of the DNA solution with pyrolysis time for 40 min, one-time extraction of the Tris phenol and 10 min processing the Rnase (10 mg/mL,1 μL), a clear main band of the genomic DNA in the flue-cured tobacco could be obtained. The extracted genomic DNA OD260/OD280 was between 1.7 and 1.9. OD260/OD230 was greater than 2.0. In this case, with 35 ng genomic DNA, clear RAPD and SCAR maps could be obtained. The extracted genomic DNA can be applied to the molecular biological experiments.
-
Key words:
- flue-cured tobacco /
- genomic DNA /
- extraction of DNA /
- PCR
-
-
[1]
张英,柏干荣,黄明辉,等.植物基因组DNA提取方法的评析与验证[J].药品评价,2004,1(4):292.
-
[2]
魏志刚,王艳敏,杨传平.松科植物基因组总DNA提取方法的比较[J].生物技术通讯,2007,18(2):263.
-
[3]
邓力超,邱道寿,屠乃美,等.PVP对烟草基因组DNA提取的影响[J].广东农业科学,2009(5):37.
-
[4]
梁景霞,祁建民,吴为人,等.烟草DNA的提取与SRAP反应体系的建立[J].中国烟草学报,2005,11(4):33.
-
[5]
郭兆奎,万秀清,魏继承,等.适于PCR分析的烤后烟叶DNA提取方法的研究[J].中国烟草科学,1999(4):5.
-
[6]
Sarala K,Rao R V S.Genetic diversity in Indian FCV andburley tobacco cultivars[J].J of Genetics,2008,87(2):159.
-
[7]
Gadani F,Ward M,Guo Z K,et al.Report of the COREST task force genetically modified tobacco:detetion methods[J].Coresta Bulletin,1999(4):77.
-
[8]
马林,毛华,李元实,等.烤后烟叶RAPD反应体系优化研究[J].郑州轻工业学院学报:自然科学版,2010,25(1):1.
-
[9]
王齐红,黄骥,张红生.一种快速微量提取植物叶片DNA的方法[J].生物技术通讯,2004,15(5):479.
-
[10]
王关林,方宏筠.植物基因工程[M].北京:科学出版社,2002:742-744.
-
[11]
黄萱,高丽美,张永彦,等.一种优化的植物总DNA提取方法[J].西北作物学报,2004,24(6):1103.
-
[1]
计量
- PDF下载量: 35
- 文章访问数: 972
- 引证文献数: 0