在中国的Rubus的完整叶绿体基因组的比较分析:超变的区域和家族遗传关系
Yufen Xu1,2, Yongquan Li1, Yanzhao Chen1
1Department of Horticulture and Landscape Architecture, Zhongkai University of Agriculture and Engineering, Guangzhou 510225, China.
Genes
|June 27, 2024
概括
这项研究对22种中国鲁布斯物种的塑体进行了测序,揭示了理解鲁布斯系谱的关键遗传标记. 分析澄清了这个多样化的属内的进化关系.
科学领域:
- 植物基因组学和生物信息学
- 系统植物学和进化生物学.
- 罗萨ceae家族的分子系统学.
背景情况:
- 中国是Rubus属多样性的主要中心,有200多种本地物种.
- 在Rubus中理解不完整的基因关系是由于缺乏分子标记物.
- 之前的研究在解决这个复杂的属的进化历史方面是有限的.
研究的目的:
- 测序和组装22个中国鲁布斯物种的塑体,代表三个主要部分.
- 分析这些塑体体内的结构和序列变化.
- 通过使用整体塑体数据,澄清中国鲁布斯物种之间的遗传关系.
主要方法:
- 对22种Rubus物种进行整体塑体测序和组装.
- 对24种Rubus塑料体进行比较分析,其中包括两种以前发表的塑料体.
- 鉴定核酸多态热点和基于完整的塑体序列的遗传学分析.
主要成果:
- 质体从155,464到156,506 bp不等,表现出保存的基因顺序和结构 (LSC,SSC,IRs).
- 确定了11个独特的分歧热点,包括trnH-psbA和ycf1,这对未来的研究很有用.
- 遗传学分析证实了采样的Rubus物种的单体群,但在Idaeobatus和Malachobatus部分发现了多体群.
结论:
- 整体塑体序列提供了一个强大的数据集,用于解决鲁布斯的基因组.
- 该研究强调了某些Rubus部分的多种类性质,需要进行分类学修订.
- 质体数据对于在多样化的Rubus属内推进系统研究至关重要.
相关概念视频
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
02:16Comparing Mitochondrial, Chloroplast, and Prokaryotic Genomes
12.3K
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...
12.3K
02:05Gene Evolution - Fast or Slow?
7.1K
The genomes of eukaryotes are punctuated by long stretches of sequence which do not code for proteins or RNAs. Although some of these regions do contain crucial regulatory sequences, the vast majority of this DNA serves no known function. Typically, these regions of the genome are the ones in which the fastest change, in evolutionary terms, is observed, because there is typically little to no selection pressure acting on these regions to preserve their sequences.
In contrast, regions which code...
In contrast, regions which code...
7.1K
02:19Export of Mitochondrial and Chloroplast Genes
3.7K
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...
3.7K