Preprints
https://doi.org/10.5194/egusphere-2024-2628
https://doi.org/10.5194/egusphere-2024-2628
11 Oct 2024
 | 11 Oct 2024

Technical note: Investigating saline water uptake by roots using spectral induced polarization 

Solomon Ehosioke, Sarah Garre, Johan Alexander Huisman, Egon Zimmermann, Mathieu Javaux, and Frederic Nguyen

Abstract. There has been some improvements in the methods available for root investigation in recent years that has enabled many studies to be carried out on the root, which represents the hidden half of the plant. Despite the increased studies on roots, there are still knowledge gaps in our understanding of the electromagnetic processes in plant roots which will be useful to quantify plant properties, and monitor plant physiological responses to dynamic environmental factors amidst climate change. In this study, we evaluated the suitability of spectral induced polarization for non-invasive assessment of root activity. We investigated the electrical properties of the primary roots of Brachypodium distachyon L. and Zea mays L. during the uptake of fresh and saline water using SIP measurements in a frequency range from 1 Hz to 45 kHz. The results show that SIP is able to detect the uptake of water and saline water in both species, and that their electrical signature were influenced by the solute concentration. The resistivity and phase response of both species increased with solute concentration until a certain threshold before it decreased. This concentration threshold was much higher in Maize than in Brachypodium, which implies that tolerance to salinity varies with the species, and that Maize is more tolerant to salinity than Brachypodium. We conclude that spectral induced polarization is a useful tool for monitoring root activity, and could be adapted for early detection of salt stress in plants.

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Journal article(s) based on this preprint

20 Jun 2025
Technical note: Investigating saline water uptake by roots using spectral induced polarization
Solomon Ehosioke, Sarah Garré, Johan Alexander Huisman, Egon Zimmermann, Mathieu Javaux, and Frédéric Nguyen
Biogeosciences, 22, 2853–2869, https://doi.org/10.5194/bg-22-2853-2025,https://doi.org/10.5194/bg-22-2853-2025, 2025
Short summary
Solomon Ehosioke, Sarah Garre, Johan Alexander Huisman, Egon Zimmermann, Mathieu Javaux, and Frederic Nguyen

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2024-2628', Imre Cseresnyes, 25 Oct 2024
    • AC1: 'Reply on RC1', Solomon Ehosioke, 18 Jan 2025
  • RC2: 'Comment on egusphere-2024-2628', Anonymous Referee #2, 05 Dec 2024
    • AC2: 'Reply on RC2', Solomon Ehosioke, 18 Jan 2025

Interactive discussion

Status: closed

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on egusphere-2024-2628', Imre Cseresnyes, 25 Oct 2024
    • AC1: 'Reply on RC1', Solomon Ehosioke, 18 Jan 2025
  • RC2: 'Comment on egusphere-2024-2628', Anonymous Referee #2, 05 Dec 2024
    • AC2: 'Reply on RC2', Solomon Ehosioke, 18 Jan 2025

Peer review completion

AR: Author's response | RR: Referee report | ED: Editor decision | EF: Editorial file upload
ED: Reconsider after major revisions (20 Jan 2025) by Andreas Ibrom
AR by Solomon Ehosioke on behalf of the Authors (25 Feb 2025)  Author's response   Author's tracked changes   Manuscript 
ED: Reconsider after major revisions (25 Feb 2025) by Andreas Ibrom
ED: Referee Nomination & Report Request started (27 Feb 2025) by Andreas Ibrom
RR by Anonymous Referee #2 (13 Mar 2025)
ED: Publish subject to minor revisions (review by editor) (16 Mar 2025) by Andreas Ibrom
AR by Solomon Ehosioke on behalf of the Authors (20 Mar 2025)  Author's response   Author's tracked changes   Manuscript 
ED: Publish as is (24 Mar 2025) by Andreas Ibrom
AR by Solomon Ehosioke on behalf of the Authors (26 Mar 2025)  Manuscript 

Journal article(s) based on this preprint

20 Jun 2025
Technical note: Investigating saline water uptake by roots using spectral induced polarization
Solomon Ehosioke, Sarah Garré, Johan Alexander Huisman, Egon Zimmermann, Mathieu Javaux, and Frédéric Nguyen
Biogeosciences, 22, 2853–2869, https://doi.org/10.5194/bg-22-2853-2025,https://doi.org/10.5194/bg-22-2853-2025, 2025
Short summary
Solomon Ehosioke, Sarah Garre, Johan Alexander Huisman, Egon Zimmermann, Mathieu Javaux, and Frederic Nguyen
Solomon Ehosioke, Sarah Garre, Johan Alexander Huisman, Egon Zimmermann, Mathieu Javaux, and Frederic Nguyen

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Short summary
We investigated the electrical properties of the primary roots of Brachypodium and Maize plants during the uptake of fresh and saline water using SIP measurements in a frequency range from 1 Hz to 45 kHz. Our results indicate that salinity tolerance varies with the species, and that Maize is more tolerant to salinity than Brachypodium.
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