Metabolic Profiling of γ-Irradiated Barley Plants Identifies Reallocation of Nitrogen Metabolism and Metabolic Stress Response.
| Autor: | Volkova PY; Russian Institute of Radiology and Agroecology, Obninsk, Russian Federation., Clement G; Institut Jean-Pierre Bourgin, INRA, Versailles, France., Makarenko ES; Russian Institute of Radiology and Agroecology, Obninsk, Russian Federation., Kazakova EA; Russian Institute of Radiology and Agroecology, Obninsk, Russian Federation., Bitarishvili SV; Russian Institute of Radiology and Agroecology, Obninsk, Russian Federation., Lychenkova MA; Russian Institute of Radiology and Agroecology, Obninsk, Russian Federation. |
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| Jazyk: | angličtina |
| Zdroj: | Dose-response : a publication of International Hormesis Society [Dose Response] 2020 Mar 24; Vol. 18 (1), pp. 1559325820914186. Date of Electronic Publication: 2020 Mar 24 (Print Publication: 2020). |
| DOI: | 10.1177/1559325820914186 |
| Abstrakt: | The favorable responses of crop species to low-dose γ irradiation can help to develop cultivars with increased productivity and improved stress tolerance. In the present study, we tried to reveal the candidate metabolites involved in growth stimulation of barley seedlings after applying low-dose γ-radiation ( 60 Co) to seeds. Stimulating doses (5-20 Gy) provided a significant increase in shoot length and biomass, while relatively high dose of 100 Gy led to significant inhibition of growth. Gas chromatography-mass spectrometry metabolomic analysis uncovered several compounds that may take part in radiation hormesis establishment in irradiated plants. This includes molecules involved in nitrogen redistribution (arginine, glutamine, asparagine, and γ-aminobutyric acid) and stress-responsive metabolites, such as ascorbate, myo -inositol and its derivates, and free amino acids (l-serine, β-alanine, pipecolate, and GABA). These results contribute to the understanding of the molecular mechanisms of hormesis phenomenon. Competing Interests: Declaration of Conflicting Interests: The author(s) declared no potential conflicts of interest with respect to the research, authorship, and/or publication of this article. (© The Author(s) 2020.) |
| Databáze: | MEDLINE |
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