罗莎·达维里卡的第一个叶绿体序列Pall. 这里是 Var. Var. 的位置. 达维里卡达维里卡是什么意思
Yongxiu Xia1, Hua Wu2, Shaofeng Li1
1State Key Laboratory of Tree Genetics and Breeding, Experimental Center of Forestry in North China, National Permanent Scientific Research Base for Warm Temperate Zone Forestry of Jiulong Mountain in Beijing, Chinese Academy of Forestry, Beijing, China.
Mitochondrial DNA. Part B, Resources
|June 16, 2023
概括
罗莎达维里卡的叶绿体基因组被测序,揭示了它的遗传构成. 这为了解它在罗莎属内的进化关系提供了至关重要的数据.
科学领域:
- 植物基因组学 植物基因组学
- 分子生物学分子生物学
- 人类遗传学 是一个学科.
背景情况:
- 罗莎达维里卡 (Rosa davurica) 是花科的一员,具有显著的应用价值.
- 之前没有报道过R. davurica的叶绿体基因组序列,这限制了遗传研究.
研究的目的:
- 测序和分析Rosa davurica的叶绿体基因组.
- 描述其遗传特征和进化关系.
主要方法:
- 整个叶绿体基因组测序.
- 对基因组结构,基因含量和G/C含量的生物信息分析.
- 使用比较基因组学进行的遗传学分析.
主要成果:
- 确定了R. davurica的完整质体基因组序列 (156,971 bp与37.22%的G/C含量).
- 基因组包括大单拷贝 (LSC),小单拷贝 (SSC) 和反向重复 (IRa和IRb) 区域.
- 它包含131个独立基因 (86个蛋白质编码基因,37个tRNA,8个rRNA),其中18个基因在IR区域重复,17个基因含有内基因.
结论:
- 测序的叶绿体基因组为R. davurica的遗传研究提供了基础资源.
- 遗传学分析表明,R. davurica与其他Rosa物种之间存在密切的进化关系,例如Rosa杂交.
相关概念视频
The Anatomy of Chloroplasts
5.3K
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...
5.3K
Anatomy of Chloroplasts
110.1K
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.
110.1K
Comparing Mitochondrial, Chloroplast, and Prokaryotic Genomes
12.6K
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...
12.6K
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
Green Algae
60
Green algae, also referred to as chlorophytes, are different from red algae in having the chloroplasts containing chlorophylls a and b, which give them their distinct green hue. However, they lack phycobiliproteins, preventing them from developing the red or blue-green pigmentation seen in red algae. In terms of photosynthetic pigment composition, green algae closely resemble plants and share a close evolutionary relationship with them. Taxonomically Green algae belong to Phylum Chlorophyta in...
60
Protein Transport to the Outer Chloroplast Membrane
2.0K
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.
2.0K


