Nitrogen and phosphorus fertilization consistently favor pathogenic over mutualistic fungi in grassland soils.
Nitrogen and phosphorus fertilization consistently favor pathogenic over mutualistic fungi in grassland soils.
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DOI：
10.1038/s41467-021-23605-y
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发表时间：
2021-06-09
影响因子：
16.6
通讯作者：
Henning JA
中科院分区：
文献类型：
--
作者：
Lekberg Y;Arnillas CA;Borer ET;Bullington LS;Fierer N;Kennedy PG;Leff JW;Luis AD;Seabloom EW;Henning JA
全球生态系统的养分输入增加，但这对调节关键生态系统功能的土壤真菌协会的后果尚不清楚。我们发现，在分布在四大洲的25个草原上，氮和磷的添加促进了真菌病原体的相对丰富，抑制了互惠共生，但不影响腐生菌。结构方程模型表明，响应通常是间接的，主要是由植物群落中营养诱导的变化所介导的。营养添加还减少了真菌公会内部和之间的共生现象，这可能对地下相互作用产生重要影响。只关注没有营养添加的地块，土壤特性影响全球病原菌丰度，而植物群落特征影响互惠生物，气候影响腐殖体。我们表现出一致的、行会级别的反应，这增强了我们预测与人为富营养化相关的土壤功能变化的能力，这可能会对植物群落产生更长期的影响。人为的营养丰富可能会导致土壤微生物群落的变化。在这里，作者分析了氮和磷的添加对土壤真菌的影响，在一个分布在四大洲的草原实验中，发现了病原体的促进作用，互惠共生的抑制，腐生菌的不转移。
Ecosystems across the globe receive elevated inputs of nutrients, but the consequences of this for soil fungal guilds that mediate key ecosystem functions remain unclear. We find that nitrogen and phosphorus addition to 25 grasslands distributed across four continents promotes the relative abundance of fungal pathogens, suppresses mutualists, but does not affect saprotrophs. Structural equation models suggest that responses are often indirect and primarily mediated by nutrient-induced shifts in plant communities. Nutrient addition also reduces co-occurrences within and among fungal guilds, which could have important consequences for belowground interactions. Focusing only on plots that received no nutrient addition, soil properties influence pathogen abundance globally, whereas plant community characteristics influence mutualists, and climate influence saprotrophs. We show consistent, guild-level responses that enhance our ability to predict shifts in soil function related to anthropogenic eutrophication, which can have longer-term consequences for plant communities. Anthropogenic nutrient enrichment may drive shifts in soil microbial communities. Here, the authors analyse nitrogen and phosphorus addition effects on soil fungi in a distributed grassland experiment across four continents, finding promotion of pathogens, suppression of mutualists, and no shifts in saprotrophs.
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DOI：
10.1073/pnas.1315179111
发表时间：
2014-01-14
影响因子：
11.1
作者：
Adler, Peter B.;Salguero-Gomez, Roberto;Franco, Miguel
通讯作者：
Franco, Miguel
影响因子：
3.7
作者：
Cleland, Elsa E.;Lind, Eric M.;Seabloom, Eric W.
通讯作者：
Seabloom, Eric W.
影响因子：
9.7
作者：
Balser, TC;Treseder, KK;Ekenler, M
通讯作者：
Ekenler, M
影响因子：
5
作者：
JOHNSON, NC
通讯作者：
JOHNSON, NC
影响因子：
8.8
作者：
Cappelli, Seraina L.;Pichon, Noemie A.;Allan, Eric
通讯作者：
Allan, Eric