dc.contributor.author | Blagojevic, Dajana | |
dc.contributor.author | Lee, YeonKyeong | |
dc.contributor.author | Xie, Li | |
dc.contributor.author | Brede, Dag A | |
dc.contributor.author | Nybakken, Line | |
dc.contributor.author | Lind, Ole Christian | |
dc.contributor.author | Tollefsen, Knut Erik | |
dc.contributor.author | Salbu, Brit | |
dc.contributor.author | Solhaug, Knut Asbjørn | |
dc.contributor.author | Olsen, Jorunn E | |
dc.date.accessioned | 2020-06-25T08:31:32Z | |
dc.date.available | 2020-06-25T08:31:32Z | |
dc.date.created | 2019-12-12T08:51:54Z | |
dc.date.issued | 2019 | |
dc.identifier.citation | Photochemical and Photobiological Sciences. 2019, 18 (8), 1945-1962. | en_US |
dc.identifier.issn | 1474-905X | |
dc.identifier.uri | https://hdl.handle.net/11250/2659431 | |
dc.description | Embargo until 08 July 2020 | en_US |
dc.description.abstract | Exposure to ambient UV-B radiation may prime protective responses towards various stressors in plants, though information about interactive effects of UV-B and gamma radiation is scarce. Here, we aimed to test whether UV-B exposure could prime acclimatisation mechanisms contributing to tolerance to low-moderate gamma radiation levels in Scots pine seedlings, and concurrently whether simultaneous UV-B and gamma exposure may have an additive adverse effect on seedlings that had previously not encountered either of these stressors. Responses to simultaneous UV-B (0.35 W m−2) and gamma radiation (10.2–125 mGy h−1) for 6 days with or without UV-B pre-exposure (0.35 W m−2, 4 days) were studied across various levels of organisation, as compared to effects of either radiation type. In contrast to UV-B, and regardless of UV-B presence, gamma radiation at ≥42.9 mGy h−1 caused increased formation of reactive oxygen species and reduced shoot length, and reduced root length at 125 mGy h−1. In all experiments there was a gamma dose rate-dependent increase in DNA damage at ≥10.8 mGy h−1, generally with additional UV-B-induced damage. Gamma-induced growth inhibition and gamma- and UV-B-induced DNA damage were still visible 44 days post-irradiation, even at 20.7 mGy h−1, probably due to genomic instability, but this was reversed after 8 months. In conclusion, there was no evidence of a protective effect of UV-B on gamma-induced growth inhibition and DNA damage in Scots pine, and no additive adverse effect of gamma and UV-B radiation on growth in spite of the additional UV-B-induced DNA damage. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Royal Society of Chemistry | en_US |
dc.title | No evidence of a protective or cumulative negative effect of UV-B on growth inhibition induced by gamma radiation in Scots pine (Pinus sylvestris) seedlings | en_US |
dc.title.alternative | No evidence of a protective or cumulative negative effect of UV-B on growth inhibition induced by gamma radiation in Scots pine (Pinus sylvestris) seedlings | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | acceptedVersion | en_US |
dc.source.pagenumber | 1945-1962 | en_US |
dc.source.volume | 18 | en_US |
dc.source.journal | Photochemical and Photobiological Sciences | en_US |
dc.source.issue | 8 | en_US |
dc.identifier.doi | 10.1039/c8pp00491a | |
dc.identifier.cristin | 1759721 | |
cristin.unitcode | 7464,20,13,0 | |
cristin.unitname | Økotoksikologi | |
cristin.ispublished | true | |
cristin.fulltext | postprint | |
cristin.qualitycode | 1 | |