使用ddRADseq数据对中欧Chorthippus和Pseudochorthippus (Orthoptera: Acrididae) 种类的家族遗传见解
Robin Schmidt1, Christophe Dufresnes2, Anton Krištín3
1Zoological Institute, Technische Universität Braunschweig, Mendelssohnstraße 4, 38106 Braunschweig, Germany.
Molecular phylogenetics and evolution
|January 15, 2024
概括
全基因组测序解决了虫的进化,揭示了线粒体DNA的不可靠性. 这项研究阐明了Gomphocerinae亚家族内的复杂的进化关系和分类学分类.
科学领域:
- 进化生物学 进化生物学
- 基因组学就是基因组学.
- 昆虫学 昆虫学是一门学科.
背景情况:
- 草 (Orthoptera: Acrididae) 的进化历史,特别是Gomphocerinae亚家族,由于神秘的物种,人们对其了解甚少.
- 线粒体DNA研究表明与现有的分类学分类存在差异,需要全基因组的方法.
研究的目的:
- 使用高通量基因组学重建中欧Chorthippus和Pseudochorthippus物种的进化历史.
- 评估Gomphocerinae中线粒体DNA条形码的可靠性,并澄清分类关系.
主要方法:
- 双消化限制部位相关的DNA测序 (ddRADseq) 用于基因组学分析.
- 对Chorthippus和Pseudochorthippus物种进行了遗传学分析,包括C.smardai,P.tatrae和C.biguttulus群.
主要成果:
- 遗传学分析揭示了与线粒体DNA数据的显著不一致,突出了其在这个群体中的局限性.
- 该研究强烈区分了C.biguttulus群体,并证实了C.eisentrauti.的独特性.
- 结果支持将C.smardai重新分类为Pseudochorthippus,并将P.tatrae重新分类为Chorthippus.
结论:
- 像ddRADseq这样的高通量基因组学方法对于解决复杂的虫进化辐射和分类学问题的有效.
- 这些发现强调了线粒体DNA对Gomphocerinae遗传学的不可靠性,需要进行分类学修订.
相关概念视频
Evolutionary 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
Gene 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
Phylogeny
44.2K
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.
44.2K


