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Steering the soil microbiome by repeated litter addition
Journal of Ecology ( IF 5.3 ) Pub Date : 2021-04-02 , DOI: 10.1111/1365-2745.13662 G.F. (Ciska) Veen 1 , Freddy C. ten Hooven 1 , Carolin Weser 1 , S. Emilia Hannula 1
中文翻译：
通过重复添加垃圾来控制土壤微生物群落
更新日期：2021-04-02
Journal of Ecology ( IF 5.3 ) Pub Date : 2021-04-02 , DOI: 10.1111/1365-2745.13662 G.F. (Ciska) Veen 1 , Freddy C. ten Hooven 1 , Carolin Weser 1 , S. Emilia Hannula 1
Affiliation
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- Microbial communities drive plant litter breakdown. Litters originating from different plant species are often associated with specialised microbiomes that accelerate the breakdown of that litter, known as home-field advantage. Yet, how and how fast microbial communities specialise towards litter inputs is not known.
- Here we study effects of repeated litter additions on soil microbial community structure and functioning. We set up a 9-month, full-factorial, reciprocal litter transplant experiment with soils and litters from six plant species (three grasses and three trees). We measured fungal and bacterial community composition, litter mass loss and home-field effects.
- We found that repeated litter additions resulted in convergence in fungal community composition driven by litter functional group (trees vs. grasses). Grasses enriched Sordariomycetes, while Tremellomycetes, Eurotiomycetes and Leotiomycetes were favoured by tree litter. Bacterial community composition, litter mass loss and home-field effects were not affected by litter incubation, but there was a relationship between fungal community composition and mass loss.
- We conclude that repeated litter incubations can result in directional shifts in fungal community composition, while 9 months of litter addition did not change bacterial community composition and the functioning and specialisation of microbial communities.
- Testing further how repeated litter inputs affect microbial functioning is essential for steering decomposer communities for optimal soil carbon and nutrient cycling.
中文翻译：
通过重复添加垃圾来控制土壤微生物群落
- 微生物群落导致植物凋落物分解。来自不同植物物种的垫料通常与加速垫料分解的特殊微生物组有关，这被称为主场优势。然而，微生物群落专门用于垃圾输入的方式和速度尚不清楚。
- 在这里，我们研究了重复添加凋落物对土壤微生物群落结构和功能的影响。我们使用来自六种植物（三种草和三棵树）的土壤和枯枝落叶进行了为期 9 个月的全因子互惠枯枝落叶移植实验。我们测量了真菌和细菌群落组成、凋落物质量损失和家庭场效应。
- 我们发现重复的凋落物添加导致由凋落物功能群（树与草）驱动的真菌群落组成趋同。草丰富了Sordariomycetes，而Tremellomycetes、Eurotiomycetes和Leotiomycetes则受到枯枝落叶的青睐。细菌群落组成、凋落物质量损失和家庭场效应不受凋落物孵化的影响，但真菌群落组成与质量损失之间存在关系。
- 我们得出的结论是，重复垫料孵化会导致真菌群落组成发生方向性变化，而 9 个月的垫料添加并未改变细菌群落组成以及微生物群落的功能和专业化。
- 进一步测试重复的凋落物输入如何影响微生物功能对于引导分解者群落实现最佳土壤碳和养分循环至关重要。
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