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相关概念视频

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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...
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两种新发现的物种

Qiu-Yue Zhang1, Hong-Gao Liu2, Lu-Sen Bian1,3

  • 1Institute of Microbiology, School of Ecology and Nature Conservation, Beijing Forestry University, Beijing, China.

Frontiers in cellular and infection microbiology
|June 7, 2023
PubMed
概括

在中国西南部发现了两种新的真菌物种,即Scytinostroma acystidiatum和Scytinostroma macrospermum. 遗传学分析证实了它们在Scytinostroma属内的独特的血统和独特的形态特征.

关键词:
这种植物是 Peniophoraceae.新的税种新的税种人类的基因组学.分类学 分类学.腐烂木头的真菌可以腐烂木头.

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科学领域:

  • 菌类学 菌类学是指菌类学.
  • 植物病理学 植物病理学
  • 生物多样性 生物多样性

背景情况:

  • 斯基提诺斯托马属包括以其复苏酸基底菌 (resupinate basidiomata) 闻名的皮质状真菌.
  • 准确的物种识别和遗传学定位对于理解真菌多样性和生态作用至关重要.

研究的目的:

  • 描述和正式介绍来自中国西南部的两种新型斯基提诺斯托马物种.
  • 利用分子数据调查这些新物种的遗传关系.
  • 提供详细的形态特征,使它们与已知的同源区分开来.

主要方法:

  • 对真菌标本的形态检查,包括宏观和微观特征.
  • 提取DNA,PCR放大,并对内部转录间隔器 (ITS) 和大子单元 (nLSU) 核糖体RNA基因进行测序.
  • 使用结合ITS + nLSU数据集推断进化关系的家族遗传学分析.

主要成果:

  • 根据不同的形态特征和分子数据,描述了两种新物种Scytinostroma acystidiatum和Scytinostroma macrospermum.
  • 遗传学分析显示,这两种物种形成独立的血统,与现有的斯基提诺斯特罗马物种分开.
  • S. acystidiatum的特点是缺少囊和粉状基胞 (4.77 × 3.54.7 μm),而S. macrospermum拥有众多囊和粉状基胞 (911 × 4.55.5 μm).

结论:

  • 对S. acystidiatum和S. macrospermum的发现扩大了已知的Scytinostroma属的多样性.
  • 形态和分子数据支持这些新描述的真菌的独特物种地位.
  • 需要进一步研究这些物种的生态分布和功能.