相关实验视频
Updated: May 26, 2025

09:40
Novel Sequence Discovery by Subtractive Genomics
Published on: January 25, 2019
8.6K
在蒙古的Tulipa uniflora (百合植物) 的完整的叶绿体基因组
Shukherdorj Baasanmunkh1, Nudkhuu Nyamgerel1, Batlai Oyuntsetseg2
1Department of Biology and Chemistry, Changwon National University, Changwon, South Korea.
Mitochondrial DNA. Part B, Resources
|February 25, 2025
概括
对Tulipa uniflora的完整叶绿体基因组进行了测序,揭示了其独特的遗传结构. 这项分析表明,T. uniflora与其他郁金香物种的早期分离.
科学领域:
- 植物基因组学 植物基因组学
- 分子进化是分子进化的过程.
- 叶绿体的DNA分析
背景情况:
- 郁金香 (Tulipa uniflora) 是一种植物物种,在中国,蒙古和俄罗斯广泛分布.
- 了解T. uniflora的遗传构成对于其分类学分类和进化研究至关重要.
研究的目的:
- 为了确定Tulipa uniflora的完整的叶绿体基因组序列.
- 分析T. uniflora chloroplast基因组的结构和组成特征.
- 为了调查T. uniflora在Tulipa属中的遗传学位置.
主要方法:
- 使用高通量测序来获得完整的叶绿体基因组.
- 进行了生物信息分析,以注释基因,识别重复,并分析代码的使用.
- 基于整个叶绿体基因组进行了植物遗传学分析.
主要成果:
- 成功测序了T. uniflora的全质基因组,测量了152,254 bp,GC含量为36.5%.
- 该基因组呈现四部分结构,含有98个独特的基因 (4个rRNA,29个tRNA,75个蛋白质编码).
- 对叶绿体基因组的分析表明,T. uniflora很早就从其他郁金香物种中分离出来.
结论:
- 测序的叶绿体基因组为未来对T. uniflora.的研究提供了宝贵的资源.
- 遗传数据支持T. uniflora与其同类的早期分歧.
- 叶绿体基因组信息可以帮助解决Tulipa属内的遗传学关系.
相关概念视频
Comparing Mitochondrial, Chloroplast, and Prokaryotic Genomes
12.0K
The present-day mitochondrial and chloroplast genomes have retained some of the characteristics of their ancestral prokaryotes and also have acquired new attributes during their evolution within eukaryotic cells. Like prokaryotic genomes, mitochondrial and chloroplast genomes neither bind with histone-like proteins nor show complex packaging into chromosome-like structures, as observed in eukaryotes. Unlike mitotic cell divisions observed in eukaryotic cells, mitochondria and chloroplasts...
12.0K
Export of Mitochondrial and Chloroplast Genes
3.6K
A eukaryotic cell can have up to three different types of genetic systems: nuclear, mitochondrial, and chloroplast. During evolution, organelles have exported many genes to the nucleus; this transfer is still ongoing in some plant species. Approximately 18% of the Arabidopsis thaliana nuclear genome is thought to be derived from the chloroplast’s cyanobacterial ancestor, and around 75% of the yeast genome derived from the mitochondria’s bacterial ancestor. This export has occurred...
3.6K
The Anatomy of Chloroplasts
5.0K
Green algae and plants, including green stems and unripe fruit, harbor specialized organelles called chloroplasts to carry out photosynthesis. They coordinate both stages of photosynthesis — the light-dependent reactions and the light-independent reactions. The light-dependent reactions use sunlight to release oxygen and produce chemical energy in the form of ATP and NADPH, and the light-independent reactions capture CO2 and use ATP and NADPH to produce sugar.
Structure of...
Structure of...
5.0K
Anatomy of Chloroplasts
108.3K
Green algae and plants, including green stems and unripe fruit, harbor chloroplasts—the vital organelles where photosynthesis takes place. In plants, the highest density of chloroplasts is found in the mesophyll cells of leaves.
108.3K
Protein Transport to the Outer Chloroplast Membrane
1.9K
Chloroplast outer membrane proteins encoded by the nucleus are synthesized in the cytosol. Soon after synthesis, they bind cytosolic factors such as 14-3-3 protein and the Hsp70 chaperones that keep these precursors in an unfolded state until their translocation.
Two models describe the mechanism of precursor recognition and entry across the outer membrane through the TOC complex. Model 1 suggests the newly synthesized precursor binds to the TOC receptor 159 and forms a complex.
Two models describe the mechanism of precursor recognition and entry across the outer membrane through the TOC complex. Model 1 suggests the newly synthesized precursor binds to the TOC receptor 159 and forms a complex.
1.9K
Protein Transport to the Inner Chloroplast Membrane
2.1K
Proteins targeted to the inner chloroplast membrane, or plastid proteins, are transported by two general pathways: the stop-transfer and the re-insertion or post-import pathways. Most plastid proteins carry N-terminal transit sequences and internal import sequences targeting it to the specific chloroplast subcompartment. Proteins targeted by the stop-transfer pathway have internal hydrophobic sequences that inhibit their translocation into the stroma. As a result, these precursors are arrested...
2.1K

