Long - term N - addition alters the community structure of functionally important N - cycling soil microorganisms across global grasslands
Anthropogenic nitrogen (N) input is known to alter the soil microbiome, but how N enrichment influences the abundance, alpha-diversity and community structure of N-cycling functional microbial communities in grass-lands remains poorly understood. Here, we collected soils from plant communities subje...
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| Acceso en línea: | http://ri.agro.uba.ar/files/intranet/articulo/2023frey.pdf Material complementario Material complementario Material complementario LINK AL EDITOR |
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| 022 | |a 0038-0717 | ||
| 024 | |a 10.1016/j.soilbio.2022.108887 | ||
| 040 | |a AR-BaUFA |c AR-BaUFA | ||
| 245 | 0 | 0 | |a Long - term N - addition alters the community structure of functionally important N - cycling soil microorganisms across global grasslands |
| 520 | |a Anthropogenic nitrogen (N) input is known to alter the soil microbiome, but how N enrichment influences the abundance, alpha-diversity and community structure of N-cycling functional microbial communities in grass-lands remains poorly understood. Here, we collected soils from plant communities subjected to up to 9 years of annual N-addition (10 g N m− 2 per year using urea as a N-source) and from unfertilized plots (control) in 30 grasslands worldwide spanning a large range of climatic and soil conditions. We focused on three key microbial groups responsible for two essential processes of the global N cycle: N2 fixation (soil diazotrophs) and nitrification (AOA: ammonia-oxidizing archaea and AOB: ammonia-oxidizing bacteria). We targeted soil diazotrophs, AOA and AOB using Illumina MiSeq sequencing and measured the abundance (gene copy numbers) using quantitative PCR. N-addition shifted the structure of the diazotrophic communities, although their alpha-diversity and abundance were not affected. AOA and AOB responded differently to N-addition. The abundance and alpha-diversity of AOB increased, and their community structure shifted with N-addition. In contrast, AOA were not affected by N-addition. AOA abundance outnumbered AOB in control plots under conditions of low N availability, whereas N-addition favoured copiotrophic AOB. Overall, N-addition showed a low impact on soil diazotrophs and AOA while effects for AOB communities were considerable. These results reveal that long term N-addition has important ecological implications for key microbial groups involved in two critical soil N cycling processes. Increased AOB abundance and community shifts following N-addition may change soil N cycling, as larger population sizes may promote higher rates of ammonia oxidation and subsequently increase N loss via gaseous and soil N-leaching. These findings bring us a step closer to predicting the responses and feedbacks of microbial-mediated N-cycling processes to long-term anthropogenic N-addition in grasslands. | ||
| 650 | |2 Agrovoc |9 26 | ||
| 653 | |a AMMONIA OXIDIZER | ||
| 653 | |a BIOGEOGRAPHY | ||
| 653 | |a DIAZOTROPH | ||
| 653 | |a GRASSLAND | ||
| 653 | |a N-CYCLING MICROBIAL COMMUNITY | ||
| 653 | |a N-FERTILIZATION | ||
| 653 | |a N2-FIXING BACTERIA | ||
| 653 | |a NIFH | ||
| 653 | |a NUTRIENT NETWORK (NUTNET) | ||
| 653 | |a UREA | ||
| 700 | 1 | |a Frey, Beat |u Swiss Federal Institute for Forest, Snow and Landscape Research WSL. Birmensdorf, Switzerland. |9 77895 | |
| 700 | 1 | |a Moser, Barbara |u Swiss Federal Institute for Forest, Snow and Landscape Research WSL. Birmensdorf, Switzerland. |9 73469 | |
| 700 | 1 | |a Tytgat, Bjorn |u Ghent University. Department of Biology. Laboratory of Protistology and Aquatic Ecology. Ghent, Belgium. |9 77903 | |
| 700 | 1 | |a Zimmermann, Stephan |u Swiss Federal Institute for Forest, Snow and Landscape Research WSL. Birmensdorf, Switzerland. |9 77905 | |
| 700 | 1 | |a Alberti, Juan |u Universidad de Mar del Plata (UNMDP). Instituto de Investigaciones Marinas y Costeras (IIMyC). Mar del Plata, Buenos Aires, Argentina. |9 77918 | |
| 700 | 1 | |a Biederman, Lori |u Iowa State University. Department of Ecology, Evolution, and Organismal Biology. Iowa, USA. |9 67338 | |
| 700 | 1 | |a Borer, Elizabeth T. |u University of Minnesota. Department of Ecology, Evolution, and Behavior. Saint Paul, Minnesota, USA. |9 67290 | |
| 700 | 1 | |a Broadbent, Arthur A. D. |u The University of Manchester. Department of Earth and Environmental Sciences. Manchester, UK. |9 77908 | |
| 700 | 1 | |a Caldeira, María C. |u Universidade de Lisboa. Instituto Superior de Agronomia. Centro de Estudos Florestais. Lisboa, Portugal. |9 73767 | |
| 700 | 1 | |a Davies, Kendi F. |u University of Colorado. Department of Ecology and Evolutionary Biology. Boulder, Colorado, USA. |9 77648 | |
| 700 | 1 | |a Eisenhauer, Nico |u German Centre of Integrative Biodiversity Research (iDiv). Halle-Jena-Leipzig, Leipzig, Germany. |u Leipzig University. Institute of Biology. Leipzig, Germany. |9 77907 | |
| 700 | 1 | |a Eskelinen, Anu |u German Centre of Integrative Biodiversity Research (iDiv). Halle-Jena-Leipzig, Leipzig, Germany. |u Zentrum für Umweltforschung (UFZ). Helmholtz Centre for Environmental Research UFZ. Leipzig, Germany. |u University of Oulu. Department of Ecology and Genetics. Oulu, Finland. |9 77909 | |
| 700 | 1 | |a Fay, Philip A. |u United States Department of Agriculture (USDA). Agricultural Research Service (ARS). Grassland, Soil and Water Research Laboratory. Temple, Texas, USA. |9 67292 | |
| 700 | 1 | |a Hagedorn, Frank |u Swiss Federal Institute for Forest, Snow and Landscape Research WSL. Birmensdorf, Switzerland. |9 73471 | |
| 700 | 1 | |a Hautier, Yann |u Utrecht University. Department of Biology. Ecology and Biodiversity Group. Utrecht, the Netherlands. |9 68526 | |
| 700 | 1 | |a MacDougall, Andrew S. |u University of Guelph. Department of Integrative Biology. Guelph, Ontario, Canada. |9 77910 | |
| 700 | 1 | |a McCulley, Rebecca L. |u University of Kentucky. Department of Plant and Soil Sciences. Lexington, Kentucky, USA. |9 77911 | |
| 700 | 1 | |a Moore, Joslin L. |u Monash University. School of Biological Sciences. Clayton Campus, Vic., Australia. |9 77912 | |
| 700 | 1 | |a Nepel, Maximilian |u University of Vienna. Department of Biodiversity Research. Vienna, Austria. |9 77913 | |
| 700 | 1 | |a Power, Sally A. |u Western Sydney University. Hawkesbury Institute for the Environment. Penrith, NSW, Australia. |9 77915 | |
| 700 | 1 | |a Seabloom, Eric W. |u University of Minnesota. Department of Ecology, Evolution, and Behavior. Saint Paul, Minnesota, USA. |9 67817 | |
| 700 | 1 | |a Vázquez, Eduardo |u University of Bayreuth. Department of Soil Ecology. Bayreuth Center of Ecology and Environmental Research (BayCEER). Bayreuth, Germany. |9 77916 | |
| 700 | 1 | |a Virtanen, Risto |u University of Oulu. Department of Ecology and Genetics. Oulu, Finland. |9 77917 | |
| 700 | 1 | |a Yahdjian, María Laura |u Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. |u CONICET - Universidad de Buenos Aires. Facultad de Agronomía. Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura (IFEVA). Buenos Aires, Argentina. |9 16176 | |
| 700 | 1 | |a Risch, Anita C. |u Swiss Federal Institute for Forest, Snow and Landscape Research WSL. Birmensdorf, Switzerland. |9 73048 | |
| 773 | |t Soil Biology and Biochemistry |g Vol.176 (2023), art.108887,tbls., grafs. | ||
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