相关实验视频
Updated: May 5, 2026
10:24
Next-generation Sequencing of 16S Ribosomal RNA Gene Amplicons
Published on: August 29, 2014
85.9K
NifH基因扩增序列测序和元基因组方法在评估二中的多样性方面是互补的
Shunyan Cheung1, Michael Morando2, Jonathan Magasin2
1Institute of Marine Biology and Center of Excellence for the Oceans, National Taiwan Ocean University, 2 Beining Road, Keelung 20224, Taiwan.
ISME communications
|April 4, 2025
概括
通过PCR扩增序列测定,可以准确地检测到海洋食动物的多样性,包括以前认为错过的种群. 这种方法仍然是一个有价值的工具,补充了大基因组学,以了解海洋中的固定.
科学领域:
- 海洋微生物学 海洋微生物学
- 分子生态学分子生态学
- 气循环是指气循环的过程.
背景情况:
- 通过固定气,类动物对海洋生产力至关重要.
- 化酶 (nifH) 基因是研究性的多样性的目标.
- 使用nifH1-nifH4原料进行PCR片序列测序是一种常见的方法,但其准确性受到质疑.
研究的目的:
- 为了研究基因组衍生nifH序列与nifH1-nifH4 PCR原始体之间的核酸不匹配.
- 为了确定这些不匹配是否会影响海洋虫多样性的检测和表示.
- 评估nifH安普利康序列的有用性,作为一种用于研究海洋性动物的工具.
主要方法:
- 在元基因组衍生nifH序列中分析核酸不匹配.
- 对全球海洋nifH amplicon数据集进行检查,以发现不匹配序列的存在.
- 从元基因组学和PCR测序获得的安普利康序列变异 (ASV) 的相对丰度的比较.
主要成果:
- 基因组nifH序列和nifH1-nifH4原始体之间的不匹配主要是nifH4的5'-末端的单基,并且不会阻碍基因检测.
- 具有这些不匹配的Diazotroph种群存在,并在全球海洋nifH amplicon数据集中发现了高的相对丰度.
- 虽然元基因组nifH基因仅占ASVs的一小部分,但它们对应的安普利康序列变异在数据集中可能非常丰富.
结论:
- 使用nifH1-nifH4原始体进行安普利康测序是评估海洋亚热生物多样性的可靠方法.
- 这种基于PCR的方法可以有效地检测到二氧化的种类,即使是那些有轻微的原料不匹配的种类.
- 片序列测序 (amplicon sequencing) 作为一种有价值的补充物,可以用于对海洋二氧化和固化的综合性研究.
相关概念视频
01:29Modern Molecular Taxonomy
865
Advancements in molecular biology have revolutionized the identification and characterization of bacteria, with multiple methods leveraging DNA sequencing for enhanced precision. As sequencing technologies improve and costs decline, these approaches are increasingly used in clinical, environmental, and evolutionary studies.Multilocus Sequence Typing (MLST) examines several housekeeping genes, essential chromosomal genes encoding cellular functions, to distinguish strains. Approximately...
865
01:20Applications of Molecular Taxonomy
717
Molecular taxonomy has revolutionized the understanding and classification of bacteria, providing precise insights into their diversity, evolutionary relationships, and ecological roles. By utilizing molecular techniques such as DNA sequencing and fingerprinting, researchers have made significant strides in various fields related to bacterial studies.Resolving Taxonomic AmbiguitiesMolecular taxonomy has been instrumental in distinguishing closely related bacterial species initially thought to...
717
01:30Methods to Assess Microbial Populations
102
Assessing microbial populations is crucial for understanding microbial roles in health, ecology, and industry. Various complementary techniques—both culture-based and molecular—enable detailed analysis of microbial abundance, diversity, and function.Viable Plate CountThe viable plate count is a traditional culture-based method used to estimate the number of living microbes in a sample. After serial dilution, the sample is spread onto nutrient agar plates. Each viable cell forms a...
102
01:19Methods to Assess Microbial Communities
66
Microbial communities, comprising bacteria, archaea, and eukaryotic microorganisms, inhabit diverse ecosystems and play crucial roles in environmental and biological processes. Their diversity is defined by three main parameters: species richness (the number of distinct species), species abundance (the relative quantity of each species), and species evenness (how uniformly individual species are distributed in various locations). These factors together shape the structure and ecological balance...
66