景观对全球土壤病原性真菌多样性的影响跨空间尺度
Yawen Lu1,2,3, Nico Eisenhauer4,5, Guillaume Patoine4,5
1College of Chemistry and Life Science, Suzhou University of Science and Technology, Suzhou, China. yawenlu@mail.usts.edu.cn.
Nature communications
|January 9, 2026
概括
土壤致病性真菌多样性受到全球景观因素的影响. 菌的多样性随着景观复杂性和作物覆盖而增加,但随着草和树木覆盖而减少,观察到依赖规模的效应.
科学领域:
- 土壤微生物学 土壤微生物学
- 景观生态学 景观生态学
- 菌类的多样性真菌多样性
背景情况:
- 当地环境因素和土地利用变化对土壤病原菌的多样性产生重大影响.
- 塑造真菌群落的景观层面因素的全球适用性需要进一步研究.
研究的目的:
- 评估土壤致病性真菌多样性对各种空间尺度的景观因素的全球反应.
- 为了确定景观复杂性和土地覆盖类型对真菌α和β多样性的相对重要性.
主要方法:
- 全球511个土壤样本的分析,以评估病原性真菌的多样性.
- 使用八个景观指标和六个空间尺度 (250米至10,000米半径) 的土地覆盖比例来量化景观复杂性.
主要成果:
- 土壤变量解释了真菌多样性变异的一半以上.
- 景观因素解释了阿尔法多样性变异的23.4%,增加与景观复杂性和作物覆盖相关,减少与草地和树木覆盖相关.
- 景观因素对β多样性的影响较弱 (13.0%的差异解释),并显示了依赖规模的效应,草原的反应比森林更强.
结论:
- 当地的土壤条件是主要的驱动因素,但景观模式在塑造全球土壤病原性真菌分布方面发挥着补充作用.
- 规模依赖的效应和对不同真菌群体的不同贡献 (根系与叶子/水果/种子相关) 强调了这些生态相互作用的复杂性.
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