全球Brassicaceae家族基因基于对1000个基因数据集的过
Kasper P Hendriks1, Christiane Kiefer2, Ihsan A Al-Shehbaz3
1Department of Biology, Botany, University of Osnabrück, Barbarastraße 11, 49076 Osnabrück, Germany; Functional Traits Group, Naturalis Biodiversity Center, Darwinweg 2, 2333 CR Leiden, the Netherlands.
Current biology : CB
|September 2, 2023
概括
树生命之树 (BrassiToL) 呈现了末家族最全面的族系,揭示了杂交的影响,并支持一个新的分类,包括两个子家族和58个部落.
科学领域:
- 植物系统学和植物遗传学
- 分子进化分子进化
- 生物多样性研究 生物多样性研究
背景情况:
- 布拉西卡家族,包括阿拉比多普西斯 (Arabidopsis thaliana) 和重要作物,缺乏完整的家族遗传树木.
- 现有的族系通常遭受不完整的抽样和不良的分支支持.
- 了解Brassicaceae的进化关系对于农业和植物生物学来说至关重要.
研究的目的:
- 为了构建迄今为止最完整的Brassicaceae家族的属级别的基因组.
- 调查细胞核异调及其原因,如杂交.
- 为了为未来的 Brassicaceae 研究提供一个强大的遗传学框架.
主要方法:
- 用广泛的核 (1,081个基因) 和塑体 (60个基因) 数据进行了家族遗传学分析.
- 包括349个属中的319个和全部58个部落.
- 基因采样程序以解决潜在的相似基因影响和杂交效应.
主要成果:
- 布拉西科科 (Brassicaceae) 生命之树 (BrassiToL) 是该家族最全面的族系.
- 检测到细胞核异调,可能是由于杂交.
- 297个核基因的清理子集为部落提供了高支持,对超级部落提供了适度支持.
- 据估计,家族起源于公元后期到奥利古纪后期之间.
- 结果强烈支持最近的分类,分为两个子家族和58个部落.
结论:
- 在BrassiToL的基因组为Brassicaceae生物多样性和植物生物学研究提供了一个不可或缺的工具.
- 这项研究强调了杂交在塑造布拉西卡ceae进化中的重要作用.
- 这些发现证实了新的家族分类,增强了我们对布拉西卡ceae多样性的理解.
相关概念视频
Evolutionary Relationships through Genome Comparisons
5.8K
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...
5.8K
Phylogeny
44.3K
Phylogeny is concerned with the evolutionary diversification of organisms or groups of organisms. A group of organisms with a name is called a taxon (singular). Taxa (plural) can span different levels of the evolutionary hierarchy. For instance, the group containing all birds is a taxon (comprising the class Aves), and the group of all species of daisies (the genus Bellis) is a taxon. Phylogenies can likewise include just one genus (i.e., depict species relationships) or span an entire kingdom.
44.3K
Gene Evolution - Fast or Slow?
7.2K
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...
7.2K
Phylogenetic Trees
45.4K
Phylogenetic trees come in many forms. It matters in which sequence the organisms are arranged from the bottom to the top of the tree, but the branches can rotate at their nodes without altering the information. The lines connecting individual nodes can be straight, angled, or even curved.
45.4K
Modern Molecular Taxonomy
52
Advancements in molecular biology have revolutionized the identification and characterization of bacteria, with multiple methods leveraging DNA sequencing for enhanced precision. As sequencing technologies improve and costs decline, these approaches are increasingly used in clinical, environmental, and evolutionary studies.Multilocus Sequence Typing (MLST) examines several housekeeping genes, essential chromosomal genes encoding cellular functions, to distinguish strains. Approximately...
52
Genetics of Speciation
19.3K
Speciation is the evolutionary process resulting in the formation of new, distinct species—groups of reproductively isolated populations.
19.3K


