阿克里亚和相关属:分类学骨干和特征演变
I Yatsiuk1, D Leontyev2,3, M Schnittler3
1Institute of Ecology & Earth Sciences, University of Tartu, Vanemuise 46, EE-51014 Tartu, Estonia.
Fungal systematics and evolution
|April 2, 2025
概括
这项研究修订了myxomycete属Arcyria,揭示了它的多种性质. 建立了新的家族和属,澄清了进化关系,并改善了Trichiales的分类学分类.
科学领域:
- 菌类学 菌类学是指菌类学.
- 系统学 系统学 系统学
- 进化生物学 进化生物学
背景情况:
- 菌体属Arcyria以其多样性而闻名,但已被确定为多种类型.
- 在Trichiales中,形态特征的变异性阻碍了分类学解决.
- 需要对Arcyria进行全面的修订,以解决其分类学地位.
研究的目的:
- 为了澄清Arcyria和Trichiales中的盟友属的遗传学位置.
- 为受影响群体提出一个新的分类学框架.
- 调查关键形态特征的演化与原生学有关.
主要方法:
- 用两个标记基因对192个Arcyria标本进行了家族遗传学分析,这些基因被整合到Trichiales的三基因骨干中.
- 在六大洲进行了广泛的分类学和地理采样.
- 对形态特征与遗传学数据进行比较分析.
主要成果:
- 遗传学分析证实Arcyria是多种类的,其中很大一部分形成了Hemitrichia的姐妹类.
- 新的家族Hemitrichiaceae和复活的属Heterotrichia被建立起来.
- 描述了一种新属Spiromyxa,大多数Arcyria形态物种被确定为物种复合体或多种类型.
- 推断Capillitium形态,特别是膨胀的网状结构,是Trichiales的一种祖先特征.
结论:
- 阿克里亚的多种属性需要进行分类学修订,从而建立新的家族和属.
- 像capillitium装饰和子颜色这样的形态特征保留了分类学价值,主要是在物种层面.
- 子质量颜色与遗传学分类有部分相关性,黄色物种通常在Heterotrichia中,红色/灰色物种在修订后的Arcyria中分别存在.
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