{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,11]],"date-time":"2025-10-11T02:04:59Z","timestamp":1760148299078,"version":"build-2065373602"},"reference-count":53,"publisher":"MDPI AG","issue":"4","license":[{"start":{"date-parts":[[2023,4,18]],"date-time":"2023-04-18T00:00:00Z","timestamp":1681776000000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Russian Potato Research Centre","award":["FGGM-2022-0002"],"award-info":[{"award-number":["FGGM-2022-0002"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Antioxidants"],"abstract":"<jats:p>As a result of the accident at the Chornobyl Nuclear Power Plant, significant territories were exposed to ionizing radiation. Some isotopes, such as 137Cs, are capable of making a significant impact on living organisms in the long-term perspective. The generation of reactive oxygen species is one mechanism by which ionizing radiation affects living organisms, initiating mechanisms of antioxidant protection. In this article, the effect of increased ionizing radiation on the content of non\u2013enzymatic antioxidants and the activity of antioxidant defense enzymes of Helianthus tuberosum L. was studied. This plant is widely distributed in Europe and characterized by high adaptability to abiotic factors. We found that the activity of antioxidant defense enzymes, such as catalase and peroxidase, weakly correlated with radiation exposure. The activity of ascorbate peroxidase, on the contrary, is strongly positively correlated with radiation exposure. The samples growing on the territory with constant low exposure to ionizing radiation were also characterized by an increased concentration of ascorbic acid and water-soluble phenolic compounds compared to the controls. This study may be useful for understanding the mechanisms underlying the adaptive reactions of plants under prolonged exposure to ionizing radiation.<\/jats:p>","DOI":"10.3390\/antiox12040956","type":"journal-article","created":{"date-parts":[[2023,4,19]],"date-time":"2023-04-19T03:20:39Z","timestamp":1681874439000},"page":"956","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["Influence of Increased Radiation Background on Antioxidative Responses of Helianthus tuberosus L."],"prefix":"10.3390","volume":"12","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-3992-5452","authenticated-orcid":false,"given":"Oksana B.","family":"Polivanova","sequence":"first","affiliation":[{"name":"Laboratory of Cell and Genomic Technologies, Russian Potato Research Center, 140051 Kraskovo, Russia"},{"name":"Department of Biotechnology, Russian State Agrarian University, Moscow Timiryazev Agricultural Academy, Timiryazevskaya Str., 49, 127550 Moscow, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0009-0001-4046-0859","authenticated-orcid":false,"given":"Kirill N.","family":"Tiurin","sequence":"additional","affiliation":[{"name":"Laboratory of Systemic Genomics and Plant Mobilomics, Moscow Institute of Physics and Technology, Institutsky Lane, 9, 141701 Dolgoprudny, Russia"},{"name":"Laboratory of Marker and Genomic Plant Breeding, All-Russia Research Institute of Agricultural Biotechnology, Timiryazevskaya Str., 42, 127550 Moscow, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Anastasia B.","family":"Sivolapova","sequence":"additional","affiliation":[{"name":"Laboratory of Cell and Genomic Technologies, Russian Potato Research Center, 140051 Kraskovo, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Svetlana V.","family":"Goryunova","sequence":"additional","affiliation":[{"name":"Laboratory of Cell and Genomic Technologies, Russian Potato Research Center, 140051 Kraskovo, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Sergey V.","family":"Zhevora","sequence":"additional","affiliation":[{"name":"Laboratory of Cell and Genomic Technologies, Russian Potato Research Center, 140051 Kraskovo, Russia"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2023,4,18]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"552","DOI":"10.3389\/fpls.2020.00552","article-title":"Plants in the Light of Ionizing Radiation: What Have We Learned from Chernobyl, Fukushima, and Other \u201cHot\u201d Places?","volume":"11","author":"Mousseau","year":"2020","journal-title":"Front. 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