Articles | Volume 6, issue 2
https://doi.org/10.5194/soil-6-597-2020
https://doi.org/10.5194/soil-6-597-2020
Original research article
 | Highlight paper
 | 
07 Dec 2020
Original research article | Highlight paper |  | 07 Dec 2020

Iron and aluminum association with microbially processed organic matter via meso-density aggregate formation across soils: organo-metallic glue hypothesis

Rota Wagai, Masako Kajiura, and Maki Asano

Related authors

Formation of mineral-associated organic matter via rock weathering: an experimental test for the organo-metallic glue hypothesis
Kaori Matsuoka, Jo Jinno, Hiroaki Shimada, Emi Matsumura, Ryo Shingubara, and Rota Wagai
EGUsphere, https://doi.org/10.5194/egusphere-2025-2840,https://doi.org/10.5194/egusphere-2025-2840, 2025
This preprint is open for discussion and under review for SOIL (SOIL).
Short summary
An open-source database for the synthesis of soil radiocarbon data: International Soil Radiocarbon Database (ISRaD) version 1.0
Corey R. Lawrence, Jeffrey Beem-Miller, Alison M. Hoyt, Grey Monroe, Carlos A. Sierra, Shane Stoner, Katherine Heckman, Joseph C. Blankinship, Susan E. Crow, Gavin McNicol, Susan Trumbore, Paul A. Levine, Olga Vindušková, Katherine Todd-Brown, Craig Rasmussen, Caitlin E. Hicks Pries, Christina Schädel, Karis McFarlane, Sebastian Doetterl, Christine Hatté, Yujie He, Claire Treat, Jennifer W. Harden, Margaret S. Torn, Cristian Estop-Aragonés, Asmeret Asefaw Berhe, Marco Keiluweit, Ágatha Della Rosa Kuhnen, Erika Marin-Spiotta, Alain F. Plante, Aaron Thompson, Zheng Shi, Joshua P. Schimel, Lydia J. S. Vaughn, Sophie F. von Fromm, and Rota Wagai
Earth Syst. Sci. Data, 12, 61–76, https://doi.org/10.5194/essd-12-61-2020,https://doi.org/10.5194/essd-12-61-2020, 2020
Short summary
Silicon cycled by tropical forest trees: effects of species, elevation and bedrock on Mount Kinabalu, Malaysia
Ryosuke Nakamura, Hidehiro Ishizawa, Rota Wagai, Shizuo Suzuki, Kanehiro Kitayama, and Kaoru Kitajima
Biogeosciences Discuss., https://doi.org/10.5194/bg-2018-447,https://doi.org/10.5194/bg-2018-447, 2018
Preprint withdrawn
Short summary

Related subject area

Soils and biogeochemical cycling
Methane oxidation potential of soils in a rubber plantation in Thailand affected by fertilization
Jun Murase, Kannika Sajjaphan, Chatprawee Dechjiraratthanasiri, Ornuma Duangngam, Rawiwan Chotiphan, Wutthida Rattanapichai, Wakana Azuma, Makoto Shibata, Poonpipope Kasemsap, and Daniel Epron
SOIL, 11, 457–466, https://doi.org/10.5194/soil-11-457-2025,https://doi.org/10.5194/soil-11-457-2025, 2025
Short summary
Isotopic exchangeability reveals that soil phosphate is mobilised by carboxylate anions, whereas acidification had the reverse effect
Siobhan Staunton and Chiara Pistocchi
SOIL, 11, 389–394, https://doi.org/10.5194/soil-11-389-2025,https://doi.org/10.5194/soil-11-389-2025, 2025
Short summary
Calcium is associated with specific soil organic carbon decomposition products
Mike C. Rowley, Jasquelin Pena, Matthew A. Marcus, Rachel Porras, Elaine Pegoraro, Cyrill Zosso, Nicholas O. E. Ofiti, Guido L. B. Wiesenberg, Michael W. I. Schmidt, Margaret S. Torn, and Peter S. Nico
SOIL, 11, 381–388, https://doi.org/10.5194/soil-11-381-2025,https://doi.org/10.5194/soil-11-381-2025, 2025
Short summary
Gradual drying of permafrost peat decreases carbon dioxide production in drier peat plateaus but not in wetter fens and bogs
Aelis Spiller, Cynthia M. Kallenbach, Melanie S. Burnett, David Olefeldt, Christopher Schulze, Roxane Maranger, and Peter M. J. Douglas
SOIL, 11, 371–379, https://doi.org/10.5194/soil-11-371-2025,https://doi.org/10.5194/soil-11-371-2025, 2025
Short summary
Effects of nitrogen and phosphorus amendments on CO2 and CH4 production in peat soils of Scotty Creek, Northwest Territories: potential considerations for wildfire and permafrost thaw impacts on peatland carbon exchanges
Eunji Byun, Fereidoun Rezanezhad, Stephanie Slowinski, Christina Lam, Saraswati Bhusal, Stephanie Wright, William L. Quinton, Kara L. Webster, and Philippe Van Cappellen
SOIL, 11, 309–321, https://doi.org/10.5194/soil-11-309-2025,https://doi.org/10.5194/soil-11-309-2025, 2025
Short summary

Cited articles

Adhikari, D., Sowers, T., Stuckey, J. W., Wang, X., Sparks, D. L., and Yang, Y.: Formation and redox reactivity of ferrihydrite-organic carbon-calcium co-precipitates, Geochim. Cosmochim. Ac., 244, 86–98, https://doi.org/10.1016/j.gca.2018.09.026, 2019. 
Anthony, J. W., Bideaux, R. A., Bladh, K. W., and Nichols, M. C.: Volume III. Halides, Hydroxides, Oxides, Handbook of Mineralogy, Mineralogical Society of America, Chantilly, VA 20151-1110, USA, 1997. 
Asano, M. and Wagai, R.: Evidence of aggregate hierarchy at micro- to submicron scales in an allophanic Andisol, Geoderma, 216, 62–74, https://doi.org/10.1016/j.geoderma.2013.10.005, 2014. 
Asano, M., Tamura, K., Kawada, K., and Higashi, T.: Morphological and physico-chemical characteristics of soils in a steppe region of the Kherlen River basin, Mongolia, J. Hydrol., 333, 100–108, https://doi.org/10.1016/j.jhydrol.2006.07.024, 2006. 
Asano, M., Wagai, R., Yamaguchi, N., Takeichi, Y., Maeda, M., Suga, H., and Takahashi, Y.: In Search of a Binding Agent: Nano-Scale Evidence of Preferential Carbon Associations with Poorly-Crystalline Mineral Phases in Physically-Stable, Clay-Sized Aggregates, Soil Systems, 2, 32, https://doi.org/10.3390/soilsystems2020032, 2018. 
Download
Short summary
Global significance of metals (extractable Fe and Al phases) to control organic matter (OM) in recognized. Next key questions include the identification of their localization and mechanism behind OM–metal relationships. Across 23 soils of contrasting mineralogy, Fe and Al phases were mainly associated with microbially processed OM as meso-density microaggregates. OM- and metal-rich nanocomposites with a narrow OM :  metal ratio likely acted as binding agents. A new conceptual model was proposed.
Share