相关实验视频
Updated: Jul 6, 2025

09:40
Novel Sequence Discovery by Subtractive Genomics
Published on: January 25, 2019
8.7K
关于Penstemon davidsonii的全基因组测序和注释
Kate L Ostevik1,2, Magdy Alabady3, Mengrui Zhang4
1Department of Evolution, Ecology, and Organismal Biology, University of California Riverside, Riverside, CA 92521, USA.
G3 (Bethesda, Md.)
|December 29, 2023
概括
研究人员已经对Penstemon davidsonii的第一个参考基因组进行了测序,这是一个关键的开花植物. 这种基因组资源有助于研究北美Penstemon进化和遗传多样性的研究.
科学领域:
- 植物基因组学 植物基因组学
- 进化生物学是进化的生物学.
- 植物学 植物学
背景情况:
- Penstemon是一种多样化的北美开花植物属.
- 它的物种表现出各种适应性,使其成为进化研究的典范.
研究的目的:
- 报告第一个关于Penstemon davidsonii的第一个完整参考基因组组合和注释.
- 为Penstemon进化研究提供一个基础资源.
主要方法:
- 利用PacBio的长读测序来进行基因组构造.
- 采用Hi-C支架技术进行基因组组装.
- 进行了 de novo 组装和基因注释.
主要成果:
- 产生了437,568,744个基基准基因组.
- 实现了 40 Mb 的 N50 和 5.50 的 L50 的 contig.
- 标注了18199个具有高度完整性的基因模型 (超过95%的尤迪科特布斯科).
结论:
- Penstemon davidsonii的基因组组合是一个重要的资源.
- 它将促进对该属的进化历史和遗传多样性的研究.
相关概念视频
Genome Annotation and Assembly
18.9K
The genome refers to all of the genetic material in an organism. It can range from a few million base pairs in microbial cells to several billion base pairs in many eukaryotic organisms. Genome assembly refers to the process of taking the DNA sequencing data and putting it all back together in a correct order to create a close representation of the original genome. This is followed by the identification of functional elements on the newly assembled genome, a process called genome annotation.
18.9K
Multi-species Conserved Sequences
3.9K
Next-generation sequencing technologies have created large genomic databases of a variety of animals and plants. Ever since the human genome project was completed, scientists studied the genome of primates, mammals, and other phylogenetically distant living beings. Such large-scale studies have provided new insights into the evolutionary relationship between organisms.
Although the genome of each species varies greatly from each other, a few sequences are highly conserved. Such conserved...
Although the genome of each species varies greatly from each other, a few sequences are highly conserved. Such conserved...
3.9K
Maxam-Gilbert Sequencing
11.2K
In the same year as the discovery of the Sanger sequencing method, another group of scientists, Allan Maxam and Walter Gilbert, demonstrated their chemical-cleavage method for DNA sequencing. The Maxam-Gilbert method relies on using different chemicals that can cleave the DNA sequence at specific sites, the separation of resulting DNA fragments of variable size using electrophoresis, and deciphering the DNA sequence from the resulting gel bands.
Challenges of the Maxam-Gilbert Method
The...
Challenges of the Maxam-Gilbert Method
The...
11.2K
Next-generation Sequencing
88.9K
The first human genome sequencing project cost $2.7 billion and was declared complete in 2003, after 15 years of international cooperation and collaboration between several research teams and funding agencies. Today, with the advent of next-generation sequencing technologies, the cost and time of sequencing a human genome have dropped over 100 fold.
Next-Generation Sequencing Methods
Although all next-generation methods use different technologies, they all share a set of standard features....
Next-Generation Sequencing Methods
Although all next-generation methods use different technologies, they all share a set of standard features....
88.9K
Sanger Sequencing
754.5K
DNA sequencing is a fundamental technique that is routinely used in the biological sciences. This method can be applied to a range of questions at different scales - from the sequencing of a cloned DNA fragment or the study of a mutation in a gene up to whole-genome sequencing. However, despite the widespread use of sequencing today, it was not until 1977 that Fredrick Sanger and his collaborators developed the chain-termination method to decode DNA sequences. It relies on the separation of a...
754.5K

