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相关概念视频

Taxonomy01:31

Taxonomy

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Taxonomy is the science of defining and naming groups of biological organisms based on shared characteristics. It uses a hierarchy of increasingly inclusive categories with Latin names. The smallest units of taxonomy, species and genus, are used to assign a formal, taxonomic name to each species in a system. This classification system, referred to as binomial nomenclature, was formalized by Carolus Linnaeus in the 18th century.
Hierarchy of Taxonomy
The hierarchy that Carolus Linnaeus first...
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G Protein-coupled Receptors01:15

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G Protein-Coupled Receptors or GPCRs are membrane-bound receptors that transiently associate with heterotrimeric G proteins and induce an appropriate response to sensory stimuli such as light, odors, hormones, cytokines, or neurotransmitters.
GPCRs are also called heptahelical, 7TM, or serpentine receptors, and consist of seven (H1-H7) transmembrane alpha-helices that span the bilayer to form a cylindrical core. The transmembrane helices are connected by three extracellular loops and three...
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Bacteria and archaea are susceptible to viral infections just like eukaryotes; therefore, they have developed a unique adaptive immune system to protect themselves. Clustered regularly interspaced short palindromic repeats and CRISPR-associated proteins (CRISPR-Cas) are present in more than 45% of known bacteria and 90% of known archaea.
The CRISPR-Cas system stores a copy of foreign DNA in the host genome and uses it to identify the foreign DNA upon reinfection. CRISPR-Cas has three different...
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科尔蒂纳里乌斯 (Cortinarius) 属不应该 (还) 被划分.

Brigida Gallone1, Thomas W Kuyper2,3, Jorinde Nuytinck2,4

  • 1Naturalis Biodiversity Center, Darwinweg 2, 2333 CR, Leiden, The Netherlands. brigida.gallone@naturalis.nl.

IMA fungus
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概括
此摘要是机器生成的。

遗传学分析揭示了Cortinarius菌类中的未解决的关系. 目前的数据表明,由于显著的基因树冲突和不支持的分支模式,该属不应该被分割成新的属.

关键词:
分类 分类 分类 分类.编号法 编号法 编号法 编号法遗传学冲突 遗传学冲突人类基因组学是什么?

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科学领域:

  • 菌类学 菌类学是指菌类学.
  • 菌类的遗传学 菌类的遗传学
  • 分类学 分类学是指分类学.

背景情况:

  • 科尔蒂纳里乌斯属是最多种类的真菌属之一,在全球包括数千种物种.
  • 科尔蒂纳里乌斯 (Cortinarius) 种类是关键的菌,与众多血管植物形成共生关系.
  • 之前试图对Cortinarius进行分层结构的尝试是具有挑战性的,导致最近的一项类基因组学研究提出将该属分为十个新属.

研究的目的:

  • 通过最近发表的家族基因学数据集,重新检查科尔蒂纳瑞斯属内的家族基因关系.
  • 评估拟议的新属的有效性和Cortinariaceae的整体遗传学假设.
  • 根据强有力的遗传学证据,提供关于科尔蒂纳里乌斯 (Cortinarius) 属的分类学的建议.

主要方法:

  • 利用连接和多种类的凝聚方法来分析类基因树/物种树冲突在类基因组数据集.
  • 进行了对树木空间的彻底探索,以评估遗传学假设的可靠性.
  • 评估了从拟议的重新分类中获得的十个建议的新属的单.

主要成果:

  • 检测到广泛的基因树/物种树冲突,表明Cortinarius.的未解决的基因组.
  • 在拟议的家族遗传树的骨干中确定了非常短的和没有支的分支.
  • 在10个被提议的新属中,只有4个被证实是单一的,相互关系和分支顺序不确定.

结论:

  • 目前的家族基因组数据不足以支持Cortinarius属的分裂.
  • 拟议的重新分类依赖于一种拓学,而这种拓学并不代表最好的遗传学假设.
  • 在实施真菌分类的彻底分类学和命名学变更之前,建议谨慎评估类基因组数据集.