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DNA Isolation01:24

DNA Isolation

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DNA isolation protocols can be fast and straightforward or complex and time-consuming depending on the type and quality of DNA required for further processing. For example, plasmid DNA extraction is a bit more complicated than genomic DNA extraction because of the need for an appropriate lysis method to separate plasmid DNA from gDNA during isolation. However, for specific applications, such as long-range DNA sequencing that require a good yield of high- quality DNA samples, we need to follow...
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DNA Isolation01:34

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DNA from cells is required for many biotechnology and research applications, such as molecular cloning. To remove and purify DNA from cells, researchers use various methods of DNA extraction. While the specifics of different protocols may vary, some general concepts underlie the process of DNA extraction.
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相关实验视频

Updated: Feb 22, 2026

Extraction of High Molecular Weight Genomic DNA from Soils and Sediments
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从农业土壤中有效提取DNA的优化方法.

Elías Hernández-Cruz1, Lorena Jacqueline Gómez-Godínez1, José Martín Ruvalcaba-Gómez1

  • 1Centro Nacional de Recursos Genéticos, Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias, Boulevard de la Biodiversidad 400, Rancho las Cruces, Tepatitlán de Morelos 47600, Jalisco, Mexico.

Methods and protocols
|February 20, 2026
PubMed
概括
此摘要是机器生成的。

一种用于土壤DNA提取的新方法有效地去除了像酸和金属离子这样的抑制剂. 这个国家基因资源-微生物收集中心 (CNRG-CM) 方法为微生物社区研究提供了高质量的元基因组DNA.

关键词:
提取DNA 提取DNA的方法抑制性化合物 抑制性化合物预先洗可以进行洗.

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A Hybrid DNA Extraction Method for the Qualitative and Quantitative Assessment of Bacterial Communities from Poultry Production Samples
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Last Updated: Feb 22, 2026

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科学领域:

  • 环境微生物学环境微生物学
  • 分子生态学分子生态学
  • 生物技术是生物技术.

背景情况:

  • 土壤微生物群落对于生态系统的功能至关重要.
  • 高通量测序需要高质量的DNA才能进行准确的元基因组分析.
  • 土壤的物理化学特性和像酸这样的抑制剂往往会阻碍DNA提取.

研究的目的:

  • 开发和验证一种有效的方法,从不同类型的土壤中提取高分子量元基因组DNA.
  • 为了克服现有的商业DNA提取套件的局限性.
  • 为了提高下游元基因组应用的DNA产量和纯度.

主要方法:

  • 开发了国家遗传资源-微生物收集中心 (CNRG-CM) 协议.
  • 包含用酸盐缓冲盐水 (PBS) 和酸去除抑制剂的预洗步骤.
  • 使用 cetyltrimethylammonium bromide (CTAB) /chloroform 提取用于DNA隔离.

主要成果:

  • 在三种不同的土壤类型中,CNRG-CM方法实现了10001300 ng/μL的DNA度和3048 μg/g-1的产量.
  • 这些结果明显超过了标准商业套件的结果 (最大360 ng/μL DNA,43 μg/g-1收益率).
  • 该协议有效地去除了酸和金属离子,这对于高质量的DNA至关重要.

结论:

  • CNRG-CM方法是从各种土壤中提取元基因组DNA的强大而适应性的替代方案.
  • 该议定书加强了在各种农业和生态环境中对土壤微生物群落的研究.
  • 高质量的DNA产量使得下游更全面的元基因组分析成为可能.