Visualizing the dynamics of soil aggregation as affected by arbuscular mycorrhizal fungi
Abstract
Stable soils provide valuable ecosystem services and mechanical soil stability is enhanced by the presence of arbuscular mycorrhizal fungi (AMF). Soil aggregation, which is the major driver of mechanical soil stability, is often treated as a static phenomenon, even though aggregate turnover is continually ongoing. In fact, some breakdown of macroaggregates is necessary to allow new aggregate formation and inclusion of new organic matter into microaggregates. We determined how aggregate turnover times were affected by AMF by tracking movement of rare earth elements (REE), applied as their immobile oxides, between aggregate size classes, and using X-ray fluorescence microscopy to spatially localize REEs in a sample of aggregates. Here we show that AMF increased large macroaggregate formation and slowed down disintegration of large and small macroaggregates. Microaggregate turnover was increased in the presence of AMF. Finally, internal aggregate organization suggested that although formation of microaggregates by accretion of soil to particulate organic matter is common, it is not the only mechanism in operation.
- Authors:
-
[6];
[7]
- Xavier Univ., Cincinnati, OH (United States); Univ. Berlin (Germany)
- Xavier Univ., Cincinnati, OH (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States)
- Argonne National Lab. (ANL), Argonne, IL (United States); Georg-August-Univ., Göttingen (Germany)
- Univ. of Bern (Switzerland)
- Inst. für Geographie und Geoökologie, Karlsruhe (Germany)
- Univ. Berlin (Germany)
- Publication Date:
- Research Org.:
- Argonne National Laboratory (ANL), Argonne, IL (United States)
- Sponsoring Org.:
- USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division
- OSTI Identifier:
- 1595790
- Grant/Contract Number:
- AC02-06CH11357
- Resource Type:
- Accepted Manuscript
- Journal Name:
- The ISME Journal
- Additional Journal Information:
- Journal Volume: 13; Journal Issue: 7; Journal ID: ISSN 1751-7362
- Publisher:
- Nature Publishing Group
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 59 BASIC BIOLOGICAL SCIENCES; arbuscular mycorrhizal fungi; dynamics; rare earth oxides; soil aggregation; turnover
Citation Formats
Morris, E. Kathryn, Morris, D. J. P., Vogt, S., Gleber, S. -C., Bigalke, M., Wilcke, W., and Rillig, M. C. Visualizing the dynamics of soil aggregation as affected by arbuscular mycorrhizal fungi. United States: N. p., 2019.
Web. doi:10.1038/s41396-019-0369-0.
Morris, E. Kathryn, Morris, D. J. P., Vogt, S., Gleber, S. -C., Bigalke, M., Wilcke, W., & Rillig, M. C. Visualizing the dynamics of soil aggregation as affected by arbuscular mycorrhizal fungi. United States. https://doi.org/10.1038/s41396-019-0369-0
Morris, E. Kathryn, Morris, D. J. P., Vogt, S., Gleber, S. -C., Bigalke, M., Wilcke, W., and Rillig, M. C. Mon .
"Visualizing the dynamics of soil aggregation as affected by arbuscular mycorrhizal fungi". United States. https://doi.org/10.1038/s41396-019-0369-0. https://www.osti.gov/servlets/purl/1595790.
@article{osti_1595790,
title = {Visualizing the dynamics of soil aggregation as affected by arbuscular mycorrhizal fungi},
author = {Morris, E. Kathryn and Morris, D. J. P. and Vogt, S. and Gleber, S. -C. and Bigalke, M. and Wilcke, W. and Rillig, M. C.},
abstractNote = {Stable soils provide valuable ecosystem services and mechanical soil stability is enhanced by the presence of arbuscular mycorrhizal fungi (AMF). Soil aggregation, which is the major driver of mechanical soil stability, is often treated as a static phenomenon, even though aggregate turnover is continually ongoing. In fact, some breakdown of macroaggregates is necessary to allow new aggregate formation and inclusion of new organic matter into microaggregates. We determined how aggregate turnover times were affected by AMF by tracking movement of rare earth elements (REE), applied as their immobile oxides, between aggregate size classes, and using X-ray fluorescence microscopy to spatially localize REEs in a sample of aggregates. Here we show that AMF increased large macroaggregate formation and slowed down disintegration of large and small macroaggregates. Microaggregate turnover was increased in the presence of AMF. Finally, internal aggregate organization suggested that although formation of microaggregates by accretion of soil to particulate organic matter is common, it is not the only mechanism in operation.},
doi = {10.1038/s41396-019-0369-0},
journal = {The ISME Journal},
number = 7,
volume = 13,
place = {United States},
year = {Mon Feb 11 00:00:00 EST 2019},
month = {Mon Feb 11 00:00:00 EST 2019}
}
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Works referencing / citing this record:
Effect of Indigenous and Introduced Arbuscular Mycorrhizal Fungi on Growth and Phytochemical Content of Vegetatively Propagated Prunus africana (Hook. f.) Kalkman Provenances
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