在Pezizomycotina中重新审视了高层次的家族遗传关系
Vadim Goremykin1, Claudio Donati1
1Unit of Computational Biology, Research and Innovation Centre, Fondazione Edmund Mach, Via Mach 1, 38098 San Michele all'Adige (TN), Italy Unit of Computational Biology, Research and Innovation Centre, Fondazione Edmund Mach San Michele all'Adige Italy.
IMA fungus
|July 10, 2025
概括
这项研究挑战了六个真菌类被提议合并到Lichinomycetes sensu lato. 我们的基因组分析显示,这些群体代表独立的血统,需要对Pezizomycotina真菌进行修订的分类.
科学领域:
- 菌类学和真菌遗传学 菌类遗传学
- 分子系统学 分子系统学
- 分类学修订版 分类学修订版
背景情况:
- 一个最近的基因组学假设提出将六个形态上不同的真菌类 (Candelariomycetes,Coniocybomycetes,Geoglossomycetes,Lichinomycetes,Sareomycetes,Xylonomycetes) 统一为一个单一的类,Lichinomycetes sensu lato (S.L.L.L.L.L.L.) ) 的情况.
- 这个假设是基于一个共同的起源,但由于对齐问题,缺失的数据和序列异质性,潜在的遗传学数据质量受到质疑.
研究的目的:
- 重新检查Pezizomycotina的高级分类,特别是评估拟议的Lichinomycetes s.l. 一个假设. 假设.
- 澄清所涉及的真菌类和属的进化关系和分类学界限.
主要方法:
- 用一个精心策划的数据集进行了基因组学分析.
- 还分析了数据的一个子集,其组成异质性减少,以确保稳定性.
- 性格状态的正统学评估得到了批判性的评价.
主要成果:
- 分析表明,拟议中的真菌Lichinomycetes s.l. 它们不构成单一的基因组,而是包括六个独立的基因系.
- 其中两个谱系与Geoglossomycetes sensu stricto (s.s.) 和Candelariomycetes s.s.相对应,而另一些则与以前定义的类别不一致.
- 克西洛纳 (Xylonomycetes s.s.) 和萨雷亚 (Sareomycetes s.s.) 形成了阿尔托尼奥米塞特和多提多米塞特的早期分离的血统姐妹,这表明它们被纳入一个单一的类.
- 以前被分配给Xylonomycetes s.s.的Symbiotaphrina被发现是一个独特的,早期分离的血统.
结论:
- 拟议将六个真菌类合并为Lichinomycetes s.l. 这一说法并没有得到现有的基因组学证据的支持.
- 拟修订的类Lichinomycetes包括Lichinomycetes s.s.,Coniocybomycetes s.s.,和几个 incertae sedis 属 (Caeruleum,Thelocarpon,Piccolia,Sarcosagium,Vezdaea) 的一个修订.
- 这些发现需要重新评估Pezizomycotina内的真菌分类,特别是关于Xylonomycetes,Sareomycetes,Arthoniomycetes和Dothideomycetes之间的关系.
相关概念视频
01:29Fungal Group Zygomycota
130
Zygomycota, previously classified as a distinct fungal group, are primarily terrestrial, saprophytic molds that play a crucial role as decomposers. Recent phylogenetic studies have revealed that these fungi are now divided into two major clades — Mucoromycota, which includes many symbiotic species, and Zoopagomycota, which primarily consists of parasitic and pathogenic fungi. These groups exhibit distinct ecological roles and reproductive strategies while sharing key structural and...
130
01:23Phylogeny
47.8K
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.
47.8K
01:27Diversity of Protists III
138
Rhizaria are a diverse group of unicellular protists characterized by their threadlike cytoplasmic extensions known as pseudopodia. These structures aid in both locomotion and feeding, giving Rhizaria an amoeboid appearance. Their amoeboid morphology once led to taxonomic confusion, but molecular phylogenetics has clarified their evolutionary placement and emphasized their shared use of pseudopodia despite divergent lineages.This clade comprises diverse lineages such as Chlorarachniophyta,...
138
03:21Phylogenetic Trees
46.9K
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.
46.9K
02:54Evolutionary Relationships through Genome Comparisons
6.2K
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...
6.2K
02:40The Tree of Life - Bacteria, Archaea, Eukaryotes
34.1K
The “tree of life” describes the evolution of life and the evolutionary relationships between organisms. The root of the tree is the common ancestor to all life on Earth. All other species radiate from this point, much like the branches of a tree. The numerous tips of these branches on the tree of life represent every living, or extant, species. Extinct species, which are species that no longer exist, can be found towards the center of the tree. Currently, these organisms, both...
34.1K