Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/gcb.15444 |
Fungal community structure and function shifts with atmospheric nitrogen deposition | |
Jessica A. M. Moore; Mark A. Anthony; Gregory J. Pec; Lidia K. Trocha; Artur Trzebny; Kevin M. Geyer; Linda T. A. van Diepen; Serita D. Frey | |
2020-11-29 | |
发表期刊 | Global Change Biology |
出版年 | 2020 |
英文摘要 | Fungal decomposition of soil organic matter depends on soil nitrogen (N) availability. This ecosystem process is being jeopardized by changes in N inputs that have resulted from a tripling of atmospheric N deposition in the last century. Soil fungi are impacted by atmospheric N deposition due to higher N availability, as soils are acidified, or as micronutrients become increasingly limiting. Fungal communities that persist with chronic N deposition may be enriched with traits that enable them to tolerate environmental stress, which may trade‐off with traits enabling organic matter decomposition. We hypothesized that fungal communities would respond to N deposition by shifting community composition and functional gene abundances toward those that tolerate stress but are weak decomposers. We sampled soils at seven eastern US hardwood forests where ambient N deposition varied from 3.2 to 12.6 kg N ha−1 year−1, five of which also have experimental plots where atmospheric N deposition was simulated through fertilizer application treatments (25–50 kg N ha−1 year−1). Fungal community and functional responses to fertilizer varied across the ambient N deposition gradient. Fungal biomass and richness increased with simulated N deposition at sites with low ambient deposition and decreased at sites with high ambient deposition. Fungal functional genes involved in hydrolysis of organic matter increased with ambient N deposition while genes involved in oxidation of organic matter decreased. One of four genes involved in generalized abiotic stress tolerance increased with ambient N deposition. In summary, we found that the divergent response to simulated N deposition depended on ambient N deposition levels. Fungal biomass, richness, and oxidative enzyme potential were reduced by N deposition where ambient N deposition was high suggesting fungal communities were pushed beyond an environmental stress threshold. Fungal community structure and function responses to N enrichment depended on ambient N deposition at a regional scale. |
领域 | 气候变化 ; 资源环境 |
URL | 查看原文 |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/305728 |
专题 | 气候变化 资源环境科学 |
推荐引用方式 GB/T 7714 | Jessica A. M. Moore,Mark A. Anthony,Gregory J. Pec,et al. Fungal community structure and function shifts with atmospheric nitrogen deposition[J]. Global Change Biology,2020. |
APA | Jessica A. M. Moore.,Mark A. Anthony.,Gregory J. Pec.,Lidia K. Trocha.,Artur Trzebny.,...&Serita D. Frey.(2020).Fungal community structure and function shifts with atmospheric nitrogen deposition.Global Change Biology. |
MLA | Jessica A. M. Moore,et al."Fungal community structure and function shifts with atmospheric nitrogen deposition".Global Change Biology (2020). |
条目包含的文件 | 条目无相关文件。 |
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