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Article

Wheat Leaf Antioxidative Status—Variety-Specific Mechanisms of Zinc Tolerance during Biofortification

1
Department of Biology, Josip Juraj Strossmayer University of Osijek, Ulica Cara Hadrijana 8/A, HR-31000 Osijek, Croatia
2
Division for Molecular Medicine, Ruđer Bošković Institute, Bijenička cesta 54, HR-10000 Zagreb, Croatia
3
Department for Agroecology, Faculty of Agrobiotechnical Sciences Osijek, Josip Juraj Strossmayer University of Osijek, Ulica kralja Petra Svačića 1d, HR-31000 Osijek, Croatia
*
Author to whom correspondence should be addressed.
Academic Editors: Asunción Amorós, Pedro Diaz-Vivancos and Davide Barreca
Plants 2021, 10(10), 2223; https://doi.org/10.3390/plants10102223
Received: 13 September 2021 / Revised: 11 October 2021 / Accepted: 15 October 2021 / Published: 19 October 2021
(This article belongs to the Special Issue Mechanisms of Plant Antioxidants’ Action Volume II)
In this study, we evaluated the leaf antioxidative responses of three wheat varieties (Srpanjka, Divana, and Simonida) treated with two different forms of zinc (Zn), Zn-sulfate and Zn-EDTA, in concentrations commonly used in agronomic biofortification. Zn concentration was significantly higher in the flag leaves of all three wheat varieties treated with Zn-EDTA compared to control and leaves treated with Zn-sulfate. Both forms of Zn increased malondialdehyde level and total phenolics content in varieties Srpanjka and Divana. Total glutathione content was not affected after the Zn treatment. Zn-sulfate increased the activities of glutathione reductase (GR) and guaiacol peroxidase (GPOD) in both Srpanjka and Divana, while glutathione S-transferase (GST) was only induced in var. Srpanjka. Chelate form of Zn increased the activities of GST and GPOD in both Simonida and Divana. Catalase activity was shown to be less sensitive to Zn treatment and was only induced in var. Srpanjka treated with Zn-EDTA where GPOD activity was not induced. Concentrations of Zn used for agronomic biofortification can induce oxidative stress in wheat leaves. The antioxidative status of wheat leaves could be a good indicator of Zn tolerance, whereas wheat genotype and chemical form of Zn are the most critical factors influencing Zn toxicity. View Full-Text
Keywords: zinc; lipid peroxidation; antioxidative status; wheat; biofortification zinc; lipid peroxidation; antioxidative status; wheat; biofortification
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MDPI and ACS Style

Štolfa Čamagajevac, I.; Vuković, R.; Vuković, K.; Vuković, A.; Ivezić, V.; Žuna Pfeiffer, T.; Krstin, L.; Lončarić, Z. Wheat Leaf Antioxidative Status—Variety-Specific Mechanisms of Zinc Tolerance during Biofortification. Plants 2021, 10, 2223. https://doi.org/10.3390/plants10102223

AMA Style

Štolfa Čamagajevac I, Vuković R, Vuković K, Vuković A, Ivezić V, Žuna Pfeiffer T, Krstin L, Lončarić Z. Wheat Leaf Antioxidative Status—Variety-Specific Mechanisms of Zinc Tolerance during Biofortification. Plants. 2021; 10(10):2223. https://doi.org/10.3390/plants10102223

Chicago/Turabian Style

Štolfa Čamagajevac, Ivna, Rosemary Vuković, Kristina Vuković, Ana Vuković, Vladimir Ivezić, Tanja Žuna Pfeiffer, Ljiljana Krstin, and Zdenko Lončarić. 2021. "Wheat Leaf Antioxidative Status—Variety-Specific Mechanisms of Zinc Tolerance during Biofortification" Plants 10, no. 10: 2223. https://doi.org/10.3390/plants10102223

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