Are Arabidopsis thaliana plants able to recover from exposure to gamma radiation? A molecular perspective

0578861 - ÚEB 2024 RIV GB eng J - Journal Article
Horemans, N. - Kariuki, J. - Saenen, E. - Mysara, M. - Beemster, G.T.S. - Sprangers, K. - Pavlović, Iva - Novák, Ondřej - Van Hees, M. - Nauts, R. - Duarte, G. T. - Cuypers, A.
Are Arabidopsis thaliana plants able to recover from exposure to gamma radiation? A molecular perspective.
Journal of Environmental Radioactivity. Roč. 270, DEC (2023), č. článku 107304. ISSN 0265-931X. E-ISSN 1879-1700
R&D Projects: GA MŠMT(CZ) EF16_019/0000827
Institutional support: RVO:61389030
Keywords : Arabidopsis * Gamma Rays * Radiation Monitoring
OECD category: Biochemistry and molecular biology
Impact factor: 2.3, year: 2022
Method of publishing: Open access
https://doi.org/10.1016/j.jenvrad.2023.107304

Most plant research focuses on the responses immediately after exposure to ionizing irradiation (IR). However, it is as important to investigate how plants recover after exposure since this has a profound effect on future plant growth and development and hence on the long-term consequences of exposure to stress. This study aimed to investigate the IR-induced responses after exposure and during recovery by exposing 1-week old A. thaliana seedlings to gamma dose rates ranging from 27 to 103.7 mGy/h for 2 weeks and allowing them to recover for 4 days. A high-throughput RNAsequencing analysis was carried out. An enrichment of GO terms related to the metabolism of hormones was observed both after irradiation and during recovery at all dose rates. While plants exposed to the lowest dose rate activate defence responses after irradiation, they recover from the IR by resuming normal growth during the recovery period. Plants exposed to the intermediate dose rate invest in signalling and defence after irradiation. During recovery, in the plants exposed to the highest dose rate, fundamental metabolic processes such as photosynthesis and RNA modification were still affected. This might lead to detrimental effects in the long-term or in the next generations of those irradiated plants.
Permanent Link: https://hdl.handle.net/11104/0347776