共查询到17条相似文献,搜索用时 187 毫秒
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以一种土壤DNA直接提取法为基础,比较了TENP-PBS预处理在土壤DNA提取中的应用效果。OD260/OD230和OD260/OD280以及PCR扩增结果表明,在提取DNA之前用TENP-PBS对土壤进行预处理可以有效去除腐殖酸污染,提高DNA纯度。 相似文献
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优化醋酸钾(KAC)法提取蚜虫基因组DNA 总被引:1,自引:0,他引:1
[目的]探索一种简便、有效的单头蚜虫基因组DNA提取方法。[方法]以从不同地区采集的桃蚜为试材,采用改进的KAC法和优化的KAC法提取单头桃蚜的基因组DNA,用紫外分光光度计测定所提DNA的浓度(以OD260/280表示),用0.8%琼脂糖凝胶电泳检测所提DNA的纯度,比较2种方法的提取效果;对优化KAC法所提DNA进行PCR扩增和电泳检测。[结果]优化KAC法提取的单头蚜虫基因组DNA的OD260/280为1.6-1.9,浓度为20-50 ng/g;改进KAC法提取的单头蚜虫基因组DNA的OD260/280为1.4-1.7,浓度为8-25 ng/g;来自同一地方桃蚜的基因组DNA PCR扩增产物的电泳条带基本相同。[结论]优化改进的KAC法提取的桃蚜基因组DNA浓度和纯度均较高。 相似文献
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通过优化土壤微生物总DNA的提取方法,获得高纯度、高得率和完整性好的总DNA,为桉树种植地土壤微生物群落多样性的分析奠定基础。综合比较已报道的土壤微生物DNA提取方法的优缺点,设计了7种从巨桉(Eucalyptus grandis Hill ex Maiden)人工林根际土壤中直接提取微生物DNA的方法,并通过PCR扩增、DGGE电泳及荧光定量PCR分析比较了不同方法所提取DNA的质量以及对后期分子生物学研究的适用性。结果表明,使用PVPP和硫酸铝铵联用吸附腐殖酸杂质后,采用PEG 8 000沉淀能够有效地提取桉树根际土壤DNA。该方法提取的DNA纯度最高,OD260 nm/OD230 nm达到2.45,OD260 nm/OD280 nm达到1.78,DNA得率为5.56μg/g土壤,适用于PCR扩增和荧光定量分析,并且通过DGGE电泳分离出最丰富的条带,是一种高效的提取土壤微生物DNA方法。 相似文献
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采用改良CTAB法,提取了23个梨品种基因组DNA。结果表明:所提取DNA产率在200μg/g鲜叶以上,大部分梨品种OD260/OD280在1.8左右,用于PCR-RFLP分析时,PCR扩增产物谱带清晰,且PCR扩增产物能被相应的限制性内切酶酶切。 相似文献
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提取高质量的叶绿体基因组DNA是叶绿体基因组测序分析的重要环节。研究以冬枣、晋枣成熟叶片为材料,采用高盐-低pH法和改良的高盐-低pH法比较研究枣叶绿体分离和叶绿体DNA(cpDNA)提取。结果表明,高盐-低pH法提取的cpDNA,其OD260nm/OD280nm值均为1.28,质量低,不能满足后续测序要求;改良高盐-低pH法提取的cpDNA产量明显得到提高,且cpDNA结构完整、质量高、纯度好,OD260nm/OD280nm值介于1.8~2.0,无降解现象,RNA消化完全,能满足后续测序要求。 相似文献
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比较了常规CTAB法、改良CTAB法和SDS法对太行花叶片总DNA的提取效果,并对改良CTAB法提取的DNA在多种分子标记中的适用性进行了测试.结果表明:常规CTAB法提取的DNA难以完全溶解,且有褐化现象;SDS法提取的DNA产率及纯度都很低;改良CTAB法提取的DNA产率高且稳定,无明显降解,杂质少,OD260/OD280值在1.8左右.以改良CTAB法提取的DNA为模板,应用叶绿体和线粒体通用引物扩增出了特异性的高效产物,ISSR和RAPD引物对总DNA的扩增也获得理想结果.因此,改良CTAB法适用于太行花总DNA提取,其产物能满足核、叶绿体和线粒体基因组分子实验的要求. 相似文献
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四倍体菘蓝基因组DNA提取方法的比较 总被引:1,自引:0,他引:1
[目的]探讨四倍体菘蓝组培苗高质量DNA的提取方法。[方法]分别采用CTAB法1、CTAB法2、SDS法1、SDS法2和碱裂解法对四倍体菘蓝组培苗DNA进行提取试验,通过紫外分光光度法和琼脂糖凝胶电泳,比较了5种DNA提取方法对四倍体菘蓝组培苗的提取效果。[结果]CTAB法2提取DNA的OD260/OD230值为2.311,OD260/OD280值为1.774,DNA纯度最大,浓度最大,提取率最高,PCR扩增条带清晰,重复性好,所得DNA的质量最好。[结论]CTAB法2是提取四倍体菘蓝组培苗基因组DNA最有效的方法。 相似文献
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A Method Suitable for Extracting Genomic DNA from Animal and Plant——Modified CTAB Method 总被引:6,自引:0,他引:6
[Objective] The study aimed to introduea a rapid and effective method that is suitable for extracting genomic DNA from animal and plant. [Method] The genomic DNAs were extracted from tender leaves of 24 peanut cuhivars and from the liver, lung and kidney of white mouse through the spe-cifically modified CTAB method. The DNAs were run on agarose gel, next detected by DNA/Protein analyzer. Finally PCR amplification was conducted to detect the quality of DNAs extracted using the modified CTAB method. [Result] The clear and orderly bands were observed in gel detection, and the val-ues of OD260/OD280 for DNAs extracted via modified CTAB method were between 1.77 - I. 83. The DNAs performed well in PCR amplification. [Conclu-sion] The DNAs extracted by modified CTAB method could satisfy the requirement of PCR amplification. 相似文献
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《(《农业科学与技术》)编辑部》2008,(2)
[Objective] The study aimed to introduce a rapid and effective method that is suitable for extracting genomic DNA from animal and plant. [Method] The genomic DNAs were extracted from tender leaves of 24 peanut cultivars and from the liver,lung and kidney of white mouse through the specifically modified CTAB method. The DNAs were run on agarose gel,next detected by DNA/Protein analyzer. Finally PCR amplification was conducted to detect the quality of DNAs extracted using the modified CTAB method. [Result] The clear and orderly bands were observed in gel detection,and the values of OD260/OD280 for DNAs extracted via modified CTAB method were between 1.77-1.83. The DNAs performed well in PCR amplification. [Conclusion] The DNAs extracted by modified CTAB method could satisfy the requirement of PCR amplification. 相似文献
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A Method Suitable for Extracting Genomic DNA from Animal and Plant——Modified CTAB Method 总被引:1,自引:0,他引:1
YAN Miao-miao WEI Guang-cheng PAN Xiao-hong MA Huai-lei LI Wei-zhen Yantai Campus of Binzhou Medical College Yantai 《(《农业科学与技术》)编辑部》2008,(2)
[Objective] The study aimed to introduce a rapid and effective method that is suitable for extracting genomic DNA from animal and plant. [Method] The genomic DNAs were extracted from tender leaves of 24 peanut cultivars and from the liver,lung and kidney of white mouse through the specifically modified CTAB method. The DNAs were run on agarose gel,next detected by DNA/Protein analyzer. Finally PCR amplification was conducted to detect the quality of DNAs extracted using the modified CTAB method. [Result] The clear and orderly bands were observed in gel detection,and the values of OD260/OD280 for DNAs extracted via modified CTAB method were between 1.77-1.83. The DNAs performed well in PCR amplification. [Conclusion] The DNAs extracted by modified CTAB method could satisfy the requirement of PCR amplification. 相似文献
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为了构建运城盐湖土壤微生物宏基因组文库,文章对盐湖土壤微生物总DNA的提取方法进行了比较和探索,通过改良6种植物DNA的提取方法,分别提取了盐湖土壤微生物总DNA,并采用紫外分光光度法、凝胶电泳、内切酶分析和PCR扩增法检测了各个方法所提取的DNA样品的质量。结果表明:改良后的方法3是较适合提取运城盐湖土壤微生物总DNA的方法。采用该方法所得DNA的OD260/280值为1.883,DNA浓度和得率分别为18.1 ng·μL-1和72.4 ng·g-1;DNA片段长度约为23 kb,琼脂糖凝胶电泳条带清晰,无降解;DNA能被EcoRⅠ完全酶切,并可用于PCR扩增分析。 相似文献
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[目的]为分子生物学研究提供高质量、高产量的凉粉草总DNA。[方法]采用改良CTAB法提取总DNA,通过测定OD260/OD280值、琼脂糖凝胶电泳和RAPD扩增对所得DNA的浓度和质量进行检测,考察该方法对DNA的提取效果。[结果]改良CTAB法提取的总DNAOD260/OD280值为1.6~2.0;电泳条带清晰,完整性好,纯度高,总DNA分子量与λDNA相近;以所提DNA为模板进行RAPD扩增时,可得到稳定的扩增条带。[结论]改良CTAB法适合凉粉草基因组DNA的提取。 相似文献
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[目的]建立一种有效的巴旦木花药总RNA提取方法,为巴旦木花粉SFB基因克隆和自交不亲和机制研究奠定基础.[方法]利用改良的CTAB法从巴旦木(Amygdalus communis L.)花药中提取高质量的总RNA.[结果]该方法获得的巴旦木花药总RNA完整性好、无多糖和蛋白质的污染,产量较高(鲜花药为283.44 μg/g),OD260/OD280在1.89~1.99,OD260/OD230>2.0.提取的巴旦木花药总RNA反转录成cDNA,以SFB(S-haplotype-specific F-box gene)基因简并引物PCR扩增,获得了目的片段.[结论]改良的CTAB法是一种简单、快速有效的巴旦木花药总RNA提取方法,提取的花药总RNA能够满足巴旦木进一步的分子生物学研究. 相似文献