Articles | Volume 17, issue 24
https://doi.org/10.5194/bg-17-6475-2020
https://doi.org/10.5194/bg-17-6475-2020
Research article
 | 
22 Dec 2020
Research article |  | 22 Dec 2020

Silicon uptake and isotope fractionation dynamics by crop species

Daniel A. Frick, Rainer Remus, Michael Sommer, Jürgen Augustin, Danuta Kaczorek, and Friedhelm von Blanckenburg

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Short summary
Silicon is taken up by some plants to increase structural stability and to develop stress resistance and is rejected by others. To explore the underlying mechanisms, we used the stable isotopes of silicon that shift in their relative abundance depending on the biochemical transformation involved. On species with a rejective (tomato, mustard) and active (wheat) uptake mechanism, grown in hydroculture, we found that the transport of silicic acid is controlled by the precipitation of biogenic opal.
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