树木菌根类型调节了叶子和针的微生物群落,影响了微生物聚集和共同发生的网络模式,并影响温带森林中的垃圾分解率
Benjawan Tanunchai1,2,3, Li Ji1,4, Simon Andreas Schroeter5
1Department of Soil Ecology, UFZ-Helmholtz Centre for Environmental Research, Halle (Saale), Germany.
Frontiers in plant science
|December 14, 2023
概括
树木菌根类型通过改变微生物群落,显著影响叶子的分解. 不同的树木菌根真菌影响微生物的丰富性,组成和组装过程,影响营养循环.
科学领域:
- 生态生态学 生态生态学
- 微生物学 微生物学
- 森林科学 森林科学 森林科学
背景情况:
- 树木菌根类型,包括树状和生菌菌根类真菌,影响植物的营养获取和叶 litter 属性.
- 众所周知,叶子垃圾质量的这些变化会影响分解速度.
- 然而,不同树木菌根类型对微生物群落及其分解过程中的组合的具体影响仍然基本上未被探索.
研究的目的:
- 研究不同树木菌根类型如何影响微生物多样性,社区组成,功能和组装过程在叶子垃圾分解期间.
- 为了分析微生物群落与各类树木菌根类型的叶子垃圾分解率之间的关系.
- 了解决定性和随机过程在塑造叶子垃圾中的微生物群落中的作用.
主要方法:
- 检查了来自九种温带树种的叶子垃圾中的微生物多样性和社区动态,这些树种代表了宽叶状菌根,宽叶状菌根和针叶状菌根类型.
- 利用高分辨率的Illumina测序来分析细菌和真菌群落.
- 评估了叶子垃圾质量损失和酶活动,以及同时发生的网络分析.
主要成果:
- 树木菌根类型在分解过程中显著改变了微生物丰富性和社区组成.
- 叶子垃圾质量损失与特定的细菌群体相关,特别是N固定细菌.
- 观察到微生物群落组成和酶活动之间存在着强烈的联系.
- 细菌群体越来越多地受到决定性过程 (变量选择) 的支配,而真菌群体越来越多地受到随着时间推移的随机过程 (生态漂移) 的支配.
- 早期的分解阶段显示了细菌-真菌竞争的增加,其模式因菌根类型而异.
结论:
- 树木菌根类型在调节叶子垃圾质量方面发挥着至关重要的作用.
- 这种改变的叶子垃圾质量随后影响了微生物丰富性和社区组成.
- 最终,树木菌根类型会影响叶分解的整体速度和过程.
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