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Article

Understanding the Relationship between Water Availability and Biosilica Accumulation in Selected C4 Crop Leaves: An Experimental Approach

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CaSEs Research Group, Department of Humanities, University Pompeu Fabra, c/Ramon Trias Fargas 25-27, 08005 Barcelona, Spain
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DIADE Unit, IRD, University of Montpellier, Av. Agropolis 911, 34394 Montpellier, France
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Crop Physiology Laboratory, ICRISAT, Patancheru 502324, India
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Department of Information Technologies, Faculty of Economics and Management, Czech University of Life Sciences, Kamýcká 129, 165 00 Prague, Czech Republic
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ICREA-Catalan Institution for Research and Advanced Studies, Pg. Lluís Companys 23, 08010 Barcelona, Spain
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Department of Geography, Archaeology and Environmental Studies, University of Witwatersrand, 1 Jan Smuts Avenue, Braamfontein, Johannesburg 2000, South Africa
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Author to whom correspondence should be addressed.
Academic Editor: Fabrizio Araniti
Plants 2022, 11(8), 1019; https://doi.org/10.3390/plants11081019
Received: 15 March 2022 / Revised: 1 April 2022 / Accepted: 1 April 2022 / Published: 8 April 2022
(This article belongs to the Section Plant Nutrition)
Biosilica accumulation in plant tissues is related to the transpiration stream, which in turn depends on water availability. Nevertheless, the debate on whether genetically and environmentally controlled mechanisms of biosilica deposition are directly connected to water availability is still open. We aim at clarifying the system which leads to the deposition of biosilica in Sorghum bicolor, Pennisetum glaucum, and Eleusine coracana, expanding our understanding of the physiological role of silicon in crops well-adapted to arid environments, and simultaneously advancing the research in archaeological and paleoenvironmental studies. We cultivated ten traditional landraces for each crop in lysimeters, simulating irrigated and rain-fed scenarios in arid contexts. The percentage of biosilica accumulated in leaves indicates that both well-watered millet species deposited more biosilica than the water-stressed ones. By contrast, sorghum accumulated more biosilica with respect to the other two species, and biosilica accumulation was independent of the water regime. The water treatment alone did not explain either the variability of the assemblage or the differences in the biosilica accumulation. Hence, we hypothesize that genetics influence the variability substantially. These results demonstrate that biosilica accumulation differs among and within C4 species and that water availability is not the only driver in this process. View Full-Text
Keywords: biosilica; phyoliths; water availability; C4 crops biosilica; phyoliths; water availability; C4 crops
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MDPI and ACS Style

D’Agostini, F.; Vadez, V.; Kholova, J.; Ruiz-Pérez, J.; Madella, M.; Lancelotti, C. Understanding the Relationship between Water Availability and Biosilica Accumulation in Selected C4 Crop Leaves: An Experimental Approach. Plants 2022, 11, 1019. https://doi.org/10.3390/plants11081019

AMA Style

D’Agostini F, Vadez V, Kholova J, Ruiz-Pérez J, Madella M, Lancelotti C. Understanding the Relationship between Water Availability and Biosilica Accumulation in Selected C4 Crop Leaves: An Experimental Approach. Plants. 2022; 11(8):1019. https://doi.org/10.3390/plants11081019

Chicago/Turabian Style

D’Agostini, Francesca, Vincent Vadez, Jana Kholova, Javier Ruiz-Pérez, Marco Madella, and Carla Lancelotti. 2022. "Understanding the Relationship between Water Availability and Biosilica Accumulation in Selected C4 Crop Leaves: An Experimental Approach" Plants 11, no. 8: 1019. https://doi.org/10.3390/plants11081019

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