在热带山林中,菌根对受精没有反应
Thais Guillen1, Michael Kessler1, Jürgen Homeier2
1Department of Systematic and Evolutionary Botany University of Zurich Zurich Switzerland.
Plant-environment interactions (Hoboken, N.J.)
|April 1, 2024
概括
雀的菌根性很低,但营养的可用性并没有限制它们的真菌伙伴. 施肥并没有影响真菌群落,这表明类有普遍的真菌关联.
科学领域:
- 生态生态学 生态生态学
- 菌类学 菌类学是指菌类学.
- 植物科学 植物科学
背景情况:
- 类的菌化率低于类,可能是由于营养物质稀缺导致的碳限制.
- 在厄瓜多尔安第斯山脉进行了为期15年的受精实验,为测试这一假设提供了机会.
- 之前的研究指出,在受精后,类物种的丰富性发生了变化,暗示了菌根关系的改变.
研究的目的:
- 调查长期和受精对根相关的真菌群落的影响.
- 评估营养的可用性是否限制了安第斯云林中的菌.
- 为了比较陆地与类的真菌群落,并确定真菌伙伴.
主要方法:
- 来自125个鸟个体 (两种虫,两种陆生) 的根样使用metabarcoding进行了分析.
- 真菌群体的特点是测序真菌ASVs (安普利康序列变异).
- 这项研究研究了15年N和P受精对真菌多样性和丰富性的影响.
主要成果:
- 确定了1382种真菌ASV,其中特雷梅拉类和海立奥类占主导地位.
- 菌的多样性在个体之间高度划分,在陆地和生的不同社区.
- 突发性主要缺乏状菌根真菌 (AMF).
- 施肥并没有影响真菌的多样性或丰富性,但增加了叶中的度.
结论:
- 在这个安第斯云林生态系统中,营养素的可用性似乎并不限制菌相互作用.
- 这个地区的在他们的真菌伴侣中表现出较低的特异性.
- 这些发现挑战了碳限制是下方菌化率的主要驱动因素的观点.
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