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Morrissey EM, Mau RL, Schwartz E, Koch BJ, Hayer M, Hungate BA. Taxonomic patterns in the nitrogen assimilation of soil prokaryotes. Environ Microbiol 2018; 20:1112-1119. [PMID: 29411496 DOI: 10.1111/1462-2920.14051] [Citation(s) in RCA: 29] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/10/2017] [Revised: 12/27/2017] [Accepted: 01/14/2018] [Indexed: 11/27/2022]
Abstract
Nitrogen (N) is frequently a limiting nutrient in soil; its availability can govern ecosystem functions such as primary production and decomposition. Assimilation of N by microorganisms impacts the availability of N in soil. Despite its established ecological significance, the contributions of microbial taxa to N assimilation are unknown. Here we measure N uptake and use by microbial phylotypes and taxonomic groups within a diverse assemblage of soil microbes through quantitative stable isotope probing (qSIP) with 15 N. Following incubation with 15 NH4+, distinct patterns of 15 N assimilation among taxonomic groups were observed. For instance, glucose addition stimulated 15 N assimilation in most members of Actinobacteria and Proteobacteria but generally decreased 15 N use by Firmicutes and Bacteriodetes. While NH4+ is considered a preferred and universal source of N to prokaryotes, the majority (> 80%) of N assimilation in our soils could be attributed to a handful of active orders. Characterizing N assimilation of taxonomic groups with 15 N qSIP may provide a basis for understanding how microbial community composition influences N availability in the environment.
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Affiliation(s)
- Ember M Morrissey
- Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, AZ, USA.,Division of Plant and Soil Sciences, West Virginia University, Morgantown, WV, USA
| | - Rebecca L Mau
- Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, AZ, USA
| | - Egbert Schwartz
- Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, AZ, USA.,Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, USA
| | - Benjamin J Koch
- Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, AZ, USA
| | - Michaela Hayer
- Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, AZ, USA
| | - Bruce A Hungate
- Center for Ecosystem Science and Society, Northern Arizona University, Flagstaff, AZ, USA.,Department of Biological Sciences, Northern Arizona University, Flagstaff, AZ, USA
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Koch BJ, McHugh TA, Hayer M, Schwartz E, Blazewicz SJ, Dijkstra P, Gestel N, Marks JC, Mau RL, Morrissey EM, Pett‐Ridge J, Hungate BA. Estimating taxon‐specific population dynamics in diverse microbial communities. Ecosphere 2018. [DOI: 10.1002/ecs2.2090] [Citation(s) in RCA: 49] [Impact Index Per Article: 8.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023] Open
Affiliation(s)
- Benjamin J. Koch
- Center for Ecosystem Science and Society Northern Arizona University Flagstaff Arizona 86011 USA
| | - Theresa A. McHugh
- Center for Ecosystem Science and Society Northern Arizona University Flagstaff Arizona 86011 USA
| | - Michaela Hayer
- Center for Ecosystem Science and Society Northern Arizona University Flagstaff Arizona 86011 USA
| | - Egbert Schwartz
- Center for Ecosystem Science and Society Northern Arizona University Flagstaff Arizona 86011 USA
- Department of Biological Sciences Northern Arizona University Flagstaff Arizona 86011 USA
| | - Steven J. Blazewicz
- Physical and Life Sciences Directorate Lawrence Livermore National Laboratory Livermore California 94550 USA
| | - Paul Dijkstra
- Center for Ecosystem Science and Society Northern Arizona University Flagstaff Arizona 86011 USA
- Department of Biological Sciences Northern Arizona University Flagstaff Arizona 86011 USA
| | - Natasja Gestel
- Center for Ecosystem Science and Society Northern Arizona University Flagstaff Arizona 86011 USA
| | - Jane C. Marks
- Center for Ecosystem Science and Society Northern Arizona University Flagstaff Arizona 86011 USA
- Department of Biological Sciences Northern Arizona University Flagstaff Arizona 86011 USA
| | - Rebecca L. Mau
- Center for Ecosystem Science and Society Northern Arizona University Flagstaff Arizona 86011 USA
| | - Ember M. Morrissey
- Division of Plant and Soil Sciences West Virginia University Morgantown West Virginia 26506 USA
| | - Jennifer Pett‐Ridge
- Physical and Life Sciences Directorate Lawrence Livermore National Laboratory Livermore California 94550 USA
| | - Bruce A. Hungate
- Center for Ecosystem Science and Society Northern Arizona University Flagstaff Arizona 86011 USA
- Department of Biological Sciences Northern Arizona University Flagstaff Arizona 86011 USA
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