{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,1]],"date-time":"2026-03-01T09:58:20Z","timestamp":1772359100389,"version":"3.50.1"},"reference-count":58,"publisher":"MDPI AG","issue":"2","license":[{"start":{"date-parts":[[2023,2,4]],"date-time":"2023-02-04T00:00:00Z","timestamp":1675468800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia (FCT)","award":["SFRH\/BD\/116147\/2016"],"award-info":[{"award-number":["SFRH\/BD\/116147\/2016"]}]},{"name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia (FCT)","award":["UIDB\/05748\/2020"],"award-info":[{"award-number":["UIDB\/05748\/2020"]}]},{"name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia (FCT)","award":["UIDP\/05748\/2020"],"award-info":[{"award-number":["UIDP\/05748\/2020"]}]},{"name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia (FCT)","award":["UIDB\/50016\/2020 2020"],"award-info":[{"award-number":["UIDB\/50016\/2020 2020"]}]},{"name":"Funda\u00e7\u00e3o para a Ci\u00eancia e a Tecnologia (FCT)","award":["NORTE-01-0145-FEDER-000041"],"award-info":[{"award-number":["NORTE-01-0145-FEDER-000041"]}]},{"name":"Norte2020","award":["SFRH\/BD\/116147\/2016"],"award-info":[{"award-number":["SFRH\/BD\/116147\/2016"]}]},{"name":"Norte2020","award":["UIDB\/05748\/2020"],"award-info":[{"award-number":["UIDB\/05748\/2020"]}]},{"name":"Norte2020","award":["UIDP\/05748\/2020"],"award-info":[{"award-number":["UIDP\/05748\/2020"]}]},{"name":"Norte2020","award":["UIDB\/50016\/2020 2020"],"award-info":[{"award-number":["UIDB\/50016\/2020 2020"]}]},{"name":"Norte2020","award":["NORTE-01-0145-FEDER-000041"],"award-info":[{"award-number":["NORTE-01-0145-FEDER-000041"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Antioxidants"],"abstract":"<jats:p>This study aims to perform a broad analysis of the antioxidant (AOX) responses of young tomato plants exposed to single and combined mild nitrogen (N) and water deficits through the evaluation of oxidative biomarkers, non-enzymatic and enzymatic AOX components. \u2018Micro-Tom\u2019 seedlings were subjected to four treatments: control (CTR; 100%N + 100%W), N deficit (N; 50%N), water deficit (W; 50%W), and combined deficits (N + W; 50%N + 50%W). An enhancement of several non-enzymatic and enzymatic components was found in plants subjected to N + W deficit, which presented higher anthocyanins accumulation (up to 103%) as well as higher levels of superoxide dismutase (SOD) transcripts at root level and of ascorbate peroxidase (APX) and catalase (CAT) transcripts at shoot level. This increase in the gene expression was also translated in augmented SOD (up to 202%), APX (up to 155%) and CAT (up to 108%) activity compared to CTR plants and the single deficits. Overall, tomato plants were able to employ defense strategies to cope with this combined deficit, as demonstrated by the higher total AOX capacity (up to 87%) compared to the single deficits, which contributed to the maintenance of their redox homeostasis, with unchanged values of lipid peroxidation and hydrogen peroxide compared with CTR plants.<\/jats:p>","DOI":"10.3390\/antiox12020375","type":"journal-article","created":{"date-parts":[[2023,2,6]],"date-time":"2023-02-06T03:34:30Z","timestamp":1675654470000},"page":"375","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":27,"title":["Enzymatic and Non-Enzymatic Antioxidant Responses of Young Tomato Plants (cv. Micro-Tom) to Single and Combined Mild Nitrogen and Water Deficit: Not the Sum of the Parts"],"prefix":"10.3390","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-8222-7211","authenticated-orcid":false,"given":"Joana","family":"Machado","sequence":"first","affiliation":[{"name":"GreenUPorto\u2014Sustainable Agrifood Production Research Centre\/Inov4Agro, DGAOT, Faculty of Sciences, University of Porto, Campus de Vair\u00e3o, Rua da Agr\u00e1ria 747, 4485-646 Vair\u00e3o, Portugal"},{"name":"CBQF\u2014Centro de Biotecnologia e Qu\u00edmica Fina\u2014Laborat\u00f3rio Associado, Escola Superior de Biotecnologia, Universidade Cat\u00f3lica Portuguesa, Rua Diogo Botelho 1327, 4169-005 Porto, Portugal"},{"name":"Horticulture and Product Physiology Group, Department of Plant Sciences, Wageningen University, P.O. Box 16, 6700 AA Wageningen, The Netherlands"}]},{"given":"Marta W.","family":"Vasconcelos","sequence":"additional","affiliation":[{"name":"CBQF\u2014Centro de Biotecnologia e Qu\u00edmica Fina\u2014Laborat\u00f3rio Associado, Escola Superior de Biotecnologia, Universidade Cat\u00f3lica Portuguesa, Rua Diogo Botelho 1327, 4169-005 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3330-2024","authenticated-orcid":false,"given":"Cristiano","family":"Soares","sequence":"additional","affiliation":[{"name":"GreenUPorto\u2014Sustainable Agrifood Production Research Centre\/Inov4Agro, Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre s\/n, 4169-007 Porto, Portugal"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7756-5243","authenticated-orcid":false,"given":"Fernanda","family":"Fidalgo","sequence":"additional","affiliation":[{"name":"GreenUPorto\u2014Sustainable Agrifood Production Research Centre\/Inov4Agro, Department of Biology, Faculty of Sciences, University of Porto, Rua do Campo Alegre s\/n, 4169-007 Porto, Portugal"}]},{"given":"Ep","family":"Heuvelink","sequence":"additional","affiliation":[{"name":"Horticulture and Product Physiology Group, Department of Plant Sciences, Wageningen University, P.O. Box 16, 6700 AA Wageningen, The Netherlands"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7157-1079","authenticated-orcid":false,"given":"Susana M. P.","family":"Carvalho","sequence":"additional","affiliation":[{"name":"GreenUPorto\u2014Sustainable Agrifood Production Research Centre\/Inov4Agro, DGAOT, Faculty of Sciences, University of Porto, Campus de Vair\u00e3o, Rua da Agr\u00e1ria 747, 4485-646 Vair\u00e3o, Portugal"}]}],"member":"1968","published-online":{"date-parts":[[2023,2,4]]},"reference":[{"key":"ref_1","unstructured":"Elbehri, A. (2015). 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