Articles | Volume 21, issue 22
https://doi.org/10.5194/bg-21-5185-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/bg-21-5185-2024
© Author(s) 2024. This work is distributed under
the Creative Commons Attribution 4.0 License.
the Creative Commons Attribution 4.0 License.
Research article
| 
21 Nov 2024
Research article |
| 21 Nov 2024
| 21 Nov 2024
Assessing root–soil interactions in wetland plants: root exudation and radial oxygen loss
Smithsonian Environmental Research Center, Edgewater, MD 21037, USA
Genevieve L. Noyce
Smithsonian Environmental Research Center, Edgewater, MD 21037, USA
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Cited
17 citations as recorded by crossref.
- Coupled greenhouse gas emissions and nutrient cycling in the water-level fluctuation zone of the Three Gorges Reservoir: A review X. Liu et al. https://doi.org/10.1016/j.jece.2026.122113
- Effects of Schoenoplectus americanus (Pers.) Volkart Ex Schinz & R.Keller and Phragmites australis (Cav.) on the Water Quality Improvement of Moderately Saline Wastewater S. Estrada-Loredo et al. https://doi.org/10.1007/s13157-025-01965-1
- A new framework for interpreting ex situ wetland methane production and consumption rates S. Kent et al. https://doi.org/10.1007/s10533-025-01293-w
- A Comparative Evaluation of Rhizosphere Metabolites Collection Methods: Impacts on Metabolic Diversity, Composition and Pathways S. Li et al. https://doi.org/10.1111/pce.70611
- Ecosystem state and soil depth determine the microbial community response to warming in coastal marsh soils J. Schwarzer et al. https://doi.org/10.1016/j.isci.2026.116208
- What’s Going on Down There? Impacts of Long-Term Elevated CO2 and Community Composition on Components of Below-Ground Biomass in a Chesapeake Bay Saltmarsh R. Collin et al. https://doi.org/10.3390/hydrobiology4010008
- Maximizing Value in Constructed Wetlands: A Review of Ornamental Plants for Wastewater Treatment and Artisanal Applications S. Zamora-Castro et al. https://doi.org/10.3390/earth6040126
- Effects of Spartina alterniflora invasion on carbon, nitrogen, phosphorus and silicon stoichiometry in coastal saltmarsh wetlands J. Li et al. https://doi.org/10.1007/s13131-026-2662-x
- Rhizosphere sediments of Phragmites australis harbor elevated genetic potential for microbially mediated biogeochemical cycling and functional redundancy in lakeside wetlands H. Zhang et al. https://doi.org/10.1016/j.jes.2026.105641
- Coastal marsh carbon exudation rates increase with biomass and salinity M. Meadows-McDonnell et al. https://doi.org/10.1016/j.rhisph.2026.101455
- Potential plant traits and mechanisms behind methane emissions in rice and target genes for further dissection of their roles R. Roy et al. https://doi.org/10.1080/1343943X.2025.2590202
- Comparative Study on Nitrogen and Phosphorus Removal Efficiency and Rhizosphere Microbial Mechanisms of Six Wetland Plants in Eutrophic Water H. Cheng et al. https://doi.org/10.3390/plants15091346
- Root exudate profiles of wetland plants - a quantitative synthesis of secretion rates N. Krüger et al. https://doi.org/10.1016/j.rhisph.2026.101292
- Soil organic carbon fractions and stability shifts in response to plant mixed-growth in coastal wetlands of southeastern China X. Ren et al. https://doi.org/10.1016/j.catena.2025.109721
- Warming decreases the predictability of methane emissions in a coastal wetland A. Lewis et al. https://doi.org/10.1002/ecs2.70647
- Root organic exudate stimulation of greenhouse gases is offset by radial oxygen loss in mineral-dominated anoxic wetland soil M. Mollenkopf et al. https://doi.org/10.1016/j.geoderma.2025.117658
- Roots and the rhizosphere: a perspective on the hidden engine of regenerative, antifragile, and digitally enabled agriculture S. Cesco et al. https://doi.org/10.1016/j.farsys.2026.100199
17 citations as recorded by crossref.
- Coupled greenhouse gas emissions and nutrient cycling in the water-level fluctuation zone of the Three Gorges Reservoir: A review X. Liu et al. https://doi.org/10.1016/j.jece.2026.122113
- Effects of Schoenoplectus americanus (Pers.) Volkart Ex Schinz & R.Keller and Phragmites australis (Cav.) on the Water Quality Improvement of Moderately Saline Wastewater S. Estrada-Loredo et al. https://doi.org/10.1007/s13157-025-01965-1
- A new framework for interpreting ex situ wetland methane production and consumption rates S. Kent et al. https://doi.org/10.1007/s10533-025-01293-w
- A Comparative Evaluation of Rhizosphere Metabolites Collection Methods: Impacts on Metabolic Diversity, Composition and Pathways S. Li et al. https://doi.org/10.1111/pce.70611
- Ecosystem state and soil depth determine the microbial community response to warming in coastal marsh soils J. Schwarzer et al. https://doi.org/10.1016/j.isci.2026.116208
- What’s Going on Down There? Impacts of Long-Term Elevated CO2 and Community Composition on Components of Below-Ground Biomass in a Chesapeake Bay Saltmarsh R. Collin et al. https://doi.org/10.3390/hydrobiology4010008
- Maximizing Value in Constructed Wetlands: A Review of Ornamental Plants for Wastewater Treatment and Artisanal Applications S. Zamora-Castro et al. https://doi.org/10.3390/earth6040126
- Effects of Spartina alterniflora invasion on carbon, nitrogen, phosphorus and silicon stoichiometry in coastal saltmarsh wetlands J. Li et al. https://doi.org/10.1007/s13131-026-2662-x
- Rhizosphere sediments of Phragmites australis harbor elevated genetic potential for microbially mediated biogeochemical cycling and functional redundancy in lakeside wetlands H. Zhang et al. https://doi.org/10.1016/j.jes.2026.105641
- Coastal marsh carbon exudation rates increase with biomass and salinity M. Meadows-McDonnell et al. https://doi.org/10.1016/j.rhisph.2026.101455
- Potential plant traits and mechanisms behind methane emissions in rice and target genes for further dissection of their roles R. Roy et al. https://doi.org/10.1080/1343943X.2025.2590202
- Comparative Study on Nitrogen and Phosphorus Removal Efficiency and Rhizosphere Microbial Mechanisms of Six Wetland Plants in Eutrophic Water H. Cheng et al. https://doi.org/10.3390/plants15091346
- Root exudate profiles of wetland plants - a quantitative synthesis of secretion rates N. Krüger et al. https://doi.org/10.1016/j.rhisph.2026.101292
- Soil organic carbon fractions and stability shifts in response to plant mixed-growth in coastal wetlands of southeastern China X. Ren et al. https://doi.org/10.1016/j.catena.2025.109721
- Warming decreases the predictability of methane emissions in a coastal wetland A. Lewis et al. https://doi.org/10.1002/ecs2.70647
- Root organic exudate stimulation of greenhouse gases is offset by radial oxygen loss in mineral-dominated anoxic wetland soil M. Mollenkopf et al. https://doi.org/10.1016/j.geoderma.2025.117658
- Roots and the rhizosphere: a perspective on the hidden engine of regenerative, antifragile, and digitally enabled agriculture S. Cesco et al. https://doi.org/10.1016/j.farsys.2026.100199
Saved (final revised paper)
Latest update: 11 Aug 2026
Short summary
Plant roots release both oxygen and carbon to the surrounding soil. While oxygen leads to less production of methane (a greenhouse gas), carbon often has the opposite effect. We investigated these processes in two plant species, S. patens and S. americanus. We found that S. patens roots produce more carbon and less oxygen than S. americanus. Additionally, the S. patens pool of root-associated carbon compounds was more dominated by compound types known to lead to higher methane production.
Plant roots release both oxygen and carbon to the surrounding soil. While oxygen leads to less...
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