平头 (Pseudaspius leptocephalus) 的染色体层次的基因组组合
Xiong Gong1,2,3,4, Zufa Ding3,5, Haifeng Jiang6
1Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Harbin, 150070, China.
Scientific data
|February 22, 2025
概括
研究人员对Pseudaspius leptocephalus的完整基因组进行了测序,Pseudaspius leptocephalus是黑龙江河流盆地的关键鱼类. 这种染色体水平的基因组组合为物种提供了关键数据.
科学领域:
- 基因组学就是基因组学.
- 水生生物学 水生生物学
- 保护遗传学 保护遗传学
背景情况:
- 鱼 (Pseudaspius leptocephalus) 是一个经济和生态上重要的鱼类.
- 它是黑龙江河流盆地的特有物种,突出其独特的生态作用.
- 完整的基因组序列对于理解和改善其繁殖和保护至关重要.
研究的目的:
- 为了生成Pseudaspius leptocephalus的染色体级基因组组合.
- 利用先进的测序技术来获得高质量的基因组数据.
- 为未来对该物种的基因组和进化研究奠定基础.
主要方法:
- 使用PacBio测序进行初始基因组组装.
- 利用Hi-C测序进行染色体映射和支架.
- 预测和注释蛋白质编码基因并分析重复序列.
主要成果:
- 实现了889.21 Mb的基因组组装,并具有10.9 Mb的N50结合.
- 成功地绘制了25个染色体序列,准确率为95.0%.
- 确定了25531个编码蛋白质的基因和发现的重复序列,占基因组的39.5%.
结论:
- 这项研究介绍了Pseudaspius leptocephalus的第一个染色体级基因组.
- 这种基因组资源将支持人工育种计划和保护工作.
- 为进一步的基因组和进化研究提供了宝贵的基础.
相关概念视频
01:51Lampbrush Chromosomes
7.8K
In 1882, Flemming observed lampbrush chromosomes (LBC) in salamander eggs. Later in 1892, Rückert observed LBCs in shark egg cells and coined the term "lampbrush chromosomes" because they looked like brushes used to clean kerosene lamps.
LBCs are made up of two pairs of conjugating homologous chromatids. Each chromatid consists of alternatively positioned regions of condensed-inactive chromatin and loosely placed-active side loops, which can be contracted and extended. The loops...
LBCs are made up of two pairs of conjugating homologous chromatids. Each chromatid consists of alternatively positioned regions of condensed-inactive chromatin and loosely placed-active side loops, which can be contracted and extended. The loops...
7.8K
03:36Genome Annotation and Assembly
18.8K
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.
18.8K
02:54Evolutionary Relationships through Genome Comparisons
5.7K
Genome comparison is one of the excellent ways to interpret the evolutionary relationships between organisms. The basic principle of genome comparison is that if two species share a common feature, it is likely encoded by the DNA sequence conserved between both species. The advent of genome sequencing technologies in the late 20th century enabled scientists to understand the concept of conservation of domains between species and helped them to deduce evolutionary relationships across diverse...
5.7K