Please use this identifier to cite or link to this item: http://hdl.handle.net/2067/49463
Title: Interaction between Sulfate and Selenate in Tetraploid Wheat (Triticum turgidum L.) Genotypes
Authors: Coppa, Eleonora
Celletti, Silvia
Sestili, Francesco 
Mimmo, Tanja
Garcia Molina, Maria Dolores
Cesco, Stefano
Astolfi, Stefania 
Journal: INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES 
Issue Date: 2023
Abstract: 
Selenium (Se) is an essential micronutrient of fundamental importance to human health and the main Se source is from plant-derived foods. Plants mainly take up Se as selenate (SeO42-), through the root sulfate transport system, because of their chemical similarity. The aims of this study were (1) to characterize the interaction between Se and S during the root uptake process, by measuring the expression of genes coding for high-affinity sulfate transporters and (2) to explore the possibility of increasing plant capability to take up Se by modulating S availability in the growth medium. We selected different tetraploid wheat genotypes as model plants, including a modern genotype, Svevo (Triticum turgidum ssp. durum), and three ancient Khorasan wheats, Kamut, Turanicum 21, and Etrusco (Triticum turgidum ssp. turanicum). The plants were cultivated hydroponically for 20 days in the presence of two sulfate levels, adequate (S = 1.2 mM) and limiting (L = 0.06 mM), and three selenate levels (0, 10, 50 μM). Our findings clearly showed the differential expression of genes encoding the two high-affinity transporters (TdSultr1.1 and TdSultr1.3), which are involved in the primary uptake of sulfate from the rhizosphere. Interestingly, Se accumulation in shoots was higher when S was limited in the nutrient solution.
URI: http://hdl.handle.net/2067/49463
ISSN: 1422-0067
DOI: 10.3390/ijms24065443
Rights: Attribution 4.0 International
Appears in Collections:A1. Articolo in rivista

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