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In situ observation of localized, sub-mm scale changes of phosphorus biogeochemistry in the rhizosphere
AIMS: We imaged the sub-mm distribution of labile P and pH in the rhizosphere of three plant species to localize zones and hot spots of P depletion and accumulation along individual root axes and to relate our findings to nutrient acquisition / root exudation strategies in P-limited conditions at di...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
Springer International Publishing
2018
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5902520/ https://www.ncbi.nlm.nih.gov/pubmed/29706670 http://dx.doi.org/10.1007/s11104-017-3542-0 |
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author | Kreuzeder, Andreas Santner, Jakob Scharsching, Vanessa Oburger, Eva Hoefer, Christoph Hann, Stephan Wenzel, Walter W. |
author_facet | Kreuzeder, Andreas Santner, Jakob Scharsching, Vanessa Oburger, Eva Hoefer, Christoph Hann, Stephan Wenzel, Walter W. |
author_sort | Kreuzeder, Andreas |
collection | PubMed |
description | AIMS: We imaged the sub-mm distribution of labile P and pH in the rhizosphere of three plant species to localize zones and hot spots of P depletion and accumulation along individual root axes and to relate our findings to nutrient acquisition / root exudation strategies in P-limited conditions at different soil pH, and to mobilization pattern of other elements (Al, Fe, Ca, Mg, Mn) in the rhizosphere. METHODS: Sub-mm distributions of labile elemental patterns were sampled using diffusive gradients in thin films and analysed using laser ablation inductively coupled plasma mass spectrometry. pH images were taken using planar optodes. RESULTS: We found distinct patterns of highly localized labile P depletion and accumulation reflecting the complex interaction of plant P acquisition strategies with soil pH, fertilizer treatment, root age, and elements (Al, Fe, Ca) that are involved in P biogeochemistry in soil. We show that the plants respond to P deficiency either by acidification or alkalization, depending on initial bulk soil pH and other factors of P solubility. CONCLUSIONS: P solubilization activities of roots are highly localized, typically around root apices, but may also extend towards the extension / root hair zone. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1007/s11104-017-3542-0) contains supplementary material, which is available to authorized users. |
format | Online Article Text |
id | pubmed-5902520 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2018 |
publisher | Springer International Publishing |
record_format | MEDLINE/PubMed |
spelling | pubmed-59025202018-04-24 In situ observation of localized, sub-mm scale changes of phosphorus biogeochemistry in the rhizosphere Kreuzeder, Andreas Santner, Jakob Scharsching, Vanessa Oburger, Eva Hoefer, Christoph Hann, Stephan Wenzel, Walter W. Plant Soil Regular Article AIMS: We imaged the sub-mm distribution of labile P and pH in the rhizosphere of three plant species to localize zones and hot spots of P depletion and accumulation along individual root axes and to relate our findings to nutrient acquisition / root exudation strategies in P-limited conditions at different soil pH, and to mobilization pattern of other elements (Al, Fe, Ca, Mg, Mn) in the rhizosphere. METHODS: Sub-mm distributions of labile elemental patterns were sampled using diffusive gradients in thin films and analysed using laser ablation inductively coupled plasma mass spectrometry. pH images were taken using planar optodes. RESULTS: We found distinct patterns of highly localized labile P depletion and accumulation reflecting the complex interaction of plant P acquisition strategies with soil pH, fertilizer treatment, root age, and elements (Al, Fe, Ca) that are involved in P biogeochemistry in soil. We show that the plants respond to P deficiency either by acidification or alkalization, depending on initial bulk soil pH and other factors of P solubility. CONCLUSIONS: P solubilization activities of roots are highly localized, typically around root apices, but may also extend towards the extension / root hair zone. ELECTRONIC SUPPLEMENTARY MATERIAL: The online version of this article (10.1007/s11104-017-3542-0) contains supplementary material, which is available to authorized users. Springer International Publishing 2018-01-13 2018 /pmc/articles/PMC5902520/ /pubmed/29706670 http://dx.doi.org/10.1007/s11104-017-3542-0 Text en © The Author(s) 2018 Open Access This article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. |
spellingShingle | Regular Article Kreuzeder, Andreas Santner, Jakob Scharsching, Vanessa Oburger, Eva Hoefer, Christoph Hann, Stephan Wenzel, Walter W. In situ observation of localized, sub-mm scale changes of phosphorus biogeochemistry in the rhizosphere |
title | In situ observation of localized, sub-mm scale changes of phosphorus biogeochemistry in the rhizosphere |
title_full | In situ observation of localized, sub-mm scale changes of phosphorus biogeochemistry in the rhizosphere |
title_fullStr | In situ observation of localized, sub-mm scale changes of phosphorus biogeochemistry in the rhizosphere |
title_full_unstemmed | In situ observation of localized, sub-mm scale changes of phosphorus biogeochemistry in the rhizosphere |
title_short | In situ observation of localized, sub-mm scale changes of phosphorus biogeochemistry in the rhizosphere |
title_sort | in situ observation of localized, sub-mm scale changes of phosphorus biogeochemistry in the rhizosphere |
topic | Regular Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5902520/ https://www.ncbi.nlm.nih.gov/pubmed/29706670 http://dx.doi.org/10.1007/s11104-017-3542-0 |
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