Video Experimental Relacionado
Updated: Sep 9, 2025
08:57
Using Phylogenetic Analysis to Investigate Eukaryotic Gene Origin
Published on: August 14, 2018
16.0K
La filogenia de múltiples loci revela una novedad inesperada del complejo de T. palmata (Thelephoraceae,
Tai-Jie Yu1,2, Rou Xue1,2,3, Lin-Jie Su1,2
1School of Pharmaceutical Sciences and Yunnan Key Laboratory of Pharmacology for Natural Products, Kunming Medical University, Kunming, China.
Frontiers in fungal biology
|September 2, 2025
Resumen
Thelephora palmata, que una vez se pensó que era una sola especie, es en realidad un complejo de al menos 12 taxones crípticos. Este estudio describe ocho nuevos taxones de China, ampliando nuestra comprensión de la biodiversidad de los hongos.
Área de la Ciencia:
- Micología
- Investigación de la biodiversidad
- La taxonomía
Sus antecedentes:
- La Lephora palmata se define morfológicamente por sus basidiomatas coraloides, con ramas de color púrpura a marrón oscuro.
- Anteriormente se creía que tenía un amplio rango ecológico y distribución.
- Estudios filogenéticos recientes sugieren que T. palmata sensu lato es un complejo de especies.
Objetivo del estudio:
- Para investigar la diversidad críptica dentro del complejo de especies Thelephora palmata.
- Describir nuevos taxones basados en datos filogenéticos, morfológicos y ecológicos.
- Para aclarar la distribución biogeográfica del complejo T. palmata.
Principales métodos:
- Análisis filogenético utilizando cuatro loci genéticos: ITS, nrLSU, rpb2 y nrSSU.
- Examen morfológico de los basidiomas.
- Comparaciones de nicho medioambiental.
Principales resultados:
- Thelephora palmata sensu lato comprende al menos 12 taxones crípticos distribuidos en toda Asia, Eurasia, Europa y América del Norte.
- Se proponen ocho nuevos taxones, incluidas siete nuevas especies y una forma, procedentes de China.
- Los nuevos taxones son: T. apiculata, T. cornu-damae, T. densa, T. esculenta, T. fuscidula, T. sinopalmata, T. truncicola y T. truncicola f. pallescens.
Conclusiones:
- Thelephora palmata representa un complejo de numerosas especies crípticas, lo que requiere una revisión taxonómica.
- El estudio amplía significativamente la diversidad conocida de Thelephora en China.
- Los datos filogenéticos y morfológicos son cruciales para resolver los complejos de especies en los hongos.
Videos de Conceptos Relacionados
02:54Evolutionary Relationships through Genome Comparisons
6.1K
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...
6.1K
03:21Phylogenetic Trees
46.4K
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.
46.4K
01:23Phylogeny
46.9K
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.
46.9K
02:40The Tree of Life - Bacteria, Archaea, Eukaryotes
33.7K
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...
33.7K
01:29Modern Molecular Taxonomy
136
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...
136
02:05Gene Evolution - Fast or Slow?
7.4K
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...
7.4K