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无脊椎动物的衰退对树相关微生物群的影响最小
Cynthia Albracht1,2, François Buscot2,3, Nico Eisenhauer3,4
1Institute for Biosafety in Plant Biotechnology, Julius Kühn-Institut, Quedlinburg, Germany.
Environmental microbiology
|February 12, 2025
概括
无脊椎动物的减少显著改变了草原叶子的微生物群,增加了真菌病原体和特定的细菌. 地下影响很小,但地面上的变化影响了植物与昆虫的相互作用.
科学领域:
- 生态生态学 生态生态学
- 微生物学 微生物学
- 环境科学 环境科学
背景情况:
- 在全球范围内,无脊椎动物的生物量正在减少,这引发了对生态系统稳定性的担忧.
- 生物多样性丧失可能会破坏营养互动并改变微生物群落.
- 生态系统过程可能会受到无脊椎动物衰退的级联效应的影响.
研究的目的:
- 研究模拟无脊椎动物减少对草原生态系统和Quercus robur L.树苗的影响.
- 评估树生物质分区,菌根菌形成和基因表达的变化.
- 分析叶子,根和根球微生物组的组成.
主要方法:
- 建立了草原中等宇宙,其中无脊椎动物生物质的水平各不相同 (36%,100%和没有).
- 包括Quercus robur L.树苗,以研究草原以外的影响.
- 分析了木生物质,菌根,基因表达和微生物组合.
主要成果:
- 无脊椎动物的衰退并没有显著影响树的性能或草食动物基因表达.
- 叶子中的真菌群体显示了萨帕特罗夫和病原体的增加.
- 叶子细菌群落发生了转移,蛋白质细菌和动态细菌的数量增加.
- 地下微生物群受到影响很小,但虫感染增加.
结论:
- 无脊椎动物的衰退对地面的叶子微生物群的影响比地下更为明显.
- 叶子微生物群落的变化可能对生态系统健康产生长期影响.
- 改变的多营养相互作用,如虫感染的增加,在微生物组转变中发挥作用.
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