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Walter M, Oburger E, Schindlegger Y, et al. Retention of phytosiderophores by the soil solid phase - adsorption and desorption. Plant Soil. 2016;404:85-97doi: 10.1007/s11104-016-2800-x.
Walter, M., Oburger, E., Schindlegger, Y., Hann, S., Puschenreiter, M., Kraemer, S. M., & Schenkeveld, W. D. (2016). Retention of phytosiderophores by the soil solid phase - adsorption and desorption. Plant and soil, 40485-97. https://doi.org/10.1007/s11104-016-2800-x
Walter, M, et al. "Retention of phytosiderophores by the soil solid phase - adsorption and desorption." Plant and soil vol. 404 (2016): 85-97. doi: https://doi.org/10.1007/s11104-016-2800-x
Walter M, Oburger E, Schindlegger Y, Hann S, Puschenreiter M, Kraemer SM, Schenkeveld WD. Retention of phytosiderophores by the soil solid phase - adsorption and desorption. Plant Soil. 2016;404:85-97. doi: 10.1007/s11104-016-2800-x. Epub 2016 Feb 18. PMID: 27375302; PMCID: PMC4908159.
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Plant Soil. 2016;404:85-97. doi: 10.1007/s11104-016-2800-x. Epub 2016 Feb 18.

Retention of phytosiderophores by the soil solid phase - adsorption and desorption.

Plant and soil

M Walter, E Oburger, Y Schindlegger, S Hann, M Puschenreiter, S M Kraemer, W D C Schenkeveld

Affiliations

  1. Department of Environmental Geosciences and Research Network Environmental Science, University of Vienna, Althanstraße 14 (UZA II), 1090 Vienna, Austria.
  2. Department of Forest and Soil Sciences, University of Natural Resources and Life Sciences, Konrad Lorenz Strasse 24, 3430 Tulln, Austria.
  3. Department of Chemistry, University of Natural Resources and Life Sciences, Muthgasse 18, 1190 Vienna, Austria.

PMID: 27375302 PMCID: PMC4908159 DOI: 10.1007/s11104-016-2800-x

Abstract

BACKGROUND AND AIMS: Graminaceous plants exude phytosiderophores (PS) for acquiring Fe. Adsorption of PS and its metal complexes to the soil solid phase reduces the FePS solution concentration and hence Fe uptake. In this study we aimed to quantify adsorption, and to determine to what extent adsorption depends on the complexed metal and on soil properties. Furthermore, we examined if adsorption is a reversible process.

METHODS: Adsorption and desorption of PS and metal-PS complexes were examined in batch experiments in which the PS 2'-deoxymugineic acid (DMA) and its metal-complexes (FeDMA, CuDMA, NiDMA and ZnDMA) interacted with several calcareous soils.

RESULTS: Adsorption of DMA ligand (0-1000 μM) and metal-DMA complexes (0-100 μM) was linear in the concentration range examined. Adsorption varied by a factor ≈2 depending on the complexed metal and by up to a factor 3.5 depending on the soil. Under field-like conditions (50 % water holding capacity), 50-84 % of the DMA was predicted to be retained to the soil solid phase. Alike adsorption, desorption of metal-DMA complexes is fast (approximate equilibrium within 1 hour). However, only a small fraction of the adsorbed FeDMA (28-35 %) could be desorbed.

CONCLUSIONS: Despite this small fraction, the desorbed FeDMA still exceeded the amount in solution, indicating that desorption of FeDMA from soil reactive compounds can be an important process buffering the solution concentration.

Keywords: Adsorption; Deoxymugineic acid; Desorption; Fe acquisition; Phytosiderophore; Rhizosphere

References

  1. Plant Soil. 2014;383(1-2):59-71 - PubMed
  2. J Phys Chem A. 2012 Jun 28;116(25):6582-9 - PubMed
  3. Chemosphere. 2002 Nov;49(6):619-28 - PubMed
  4. Environ Sci Technol. 2014 Nov 4;48(21):12662-70 - PubMed
  5. J Environ Qual. 2001 Nov-Dec;30(6):2091-8 - PubMed
  6. New Phytol. 2014 Sep;203(4):1161-74 - PubMed
  7. Angew Chem Int Ed Engl. 2007;46(37):7060-3 - PubMed
  8. Electrophoresis. 2014 May;35(9):1375-85 - PubMed
  9. J Labelled Comp Radiopharm. 2014 Nov;57(13):710-4 - PubMed
  10. Plant Physiol. 2000 Nov;124(3):1149-58 - PubMed
  11. FEMS Microbiol Rev. 2001 Jan;25(1):69-106 - PubMed

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