{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,21]],"date-time":"2026-08-21T09:25:55Z","timestamp":1787304355070,"version":"build-2736575974"},"reference-count":75,"publisher":"MDPI AG","issue":"8","license":[{"start":{"date-parts":[[2026,8,12]],"date-time":"2026-08-12T00:00:00Z","timestamp":1786492800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"Government of the Russian Federation","award":["075-15-2025-008"],"award-info":[{"award-number":["075-15-2025-008"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Toxics"],"abstract":"<jats:p>Accumulation of radionuclides in crop products can pose public health risks. Parameters of 137Cs root uptake by maize were investigated at four growth stages, from leaf development to ripening (June\u2013September), in the post-Chernobyl area of the Plavsk radioactive hotspot (the Tula region of Russia). It was established that the chernozem of the agrosystem still contains about 180 kBq 137Cs m\u22122. Seasonal trends of 137Cs activity concentrations in above- and belowground parts of maize differ appreciably. In aerial parts, the 137Cs accumulation rate increases as vegetative organs develop from June to July, then drops when generative organs appear in August. In the belowground biomass, the 137Cs content increases with the growth of fine roots, which serve as relative concentrators of the radionuclide. However, at all stages of growth, radionuclide transfer to maize occurs with low intensity. It does not directly depend on changes in biomass, dry matter content, or 40K content, and only slightly relates to the ash content. The transfer factor is estimated to be 6.2 \u00d7 10\u22123 for cob kernels (grain) and 3.8 \u00d7 10\u22122 for stems and leaves, which corresponds to the IAEA-recommended values and ensures acceptable levels of 137Cs accumulation in crop products produced in the territory.<\/jats:p>","DOI":"10.3390\/toxics14080714","type":"journal-article","created":{"date-parts":[[2026,8,12]],"date-time":"2026-08-12T14:45:06Z","timestamp":1786545906000},"page":"714","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Transfer of 137Cs into Maize (Zea mays L.) at Different Growth Stages in the Area Contaminated by the Chernobyl Fallout"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-8179-8074","authenticated-orcid":false,"given":"Tatiana","family":"Paramonova","sequence":"first","affiliation":[{"name":"Laboratory of Geochemistry of Natural Waters, Geography Faculty, Lomonosov Moscow State University, Moscow 119991, Russia"},{"name":"Faculty of Soil Science, Lomonosov Moscow State University, Moscow 119991, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Olga","family":"Denisova","sequence":"additional","affiliation":[{"name":"Laboratory of Geochemistry of Natural Waters, Geography Faculty, Lomonosov Moscow State University, Moscow 119991, Russia"},{"name":"Faculty of Soil Science, Lomonosov Moscow State University, Moscow 119991, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0025-9998","authenticated-orcid":false,"given":"Natalia","family":"Kuzmenkova","sequence":"additional","affiliation":[{"name":"Laboratory of Geochemistry of Natural Waters, Geography Faculty, Lomonosov Moscow State University, Moscow 119991, Russia"},{"name":"Chemistry Faculty, Lomonosov Moscow State University, Moscow 119991, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Leonid","family":"Turykhin","sequence":"additional","affiliation":[{"name":"Laboratory of Geochemistry of Natural Waters, Geography Faculty, Lomonosov Moscow State University, Moscow 119991, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2235-450X","authenticated-orcid":false,"given":"Maria","family":"Godyaeva","sequence":"additional","affiliation":[{"name":"Laboratory of Geochemistry of Natural Waters, Geography Faculty, Lomonosov Moscow State University, Moscow 119991, Russia"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9930-8739","authenticated-orcid":false,"given":"Alexei","family":"Konoplev","sequence":"additional","affiliation":[{"name":"Laboratory of Geochemistry of Natural Waters, Geography Faculty, Lomonosov Moscow State University, Moscow 119991, Russia"},{"name":"Institute of Environmental Radioactivity, Fukushima University, Fukushima 960-1296, Japan"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2026,8,12]]},"reference":[{"key":"ref_1","unstructured":"De Cort, M., Dubois, G., Fridman, S.D., Germenchuk, M.G., Izrael, Y.A., Janssens, A., Jones, A., Kelly, G.N., Kvasnikova, E., and Matveenko, I.I. 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