NITROGEN METABOLISM IN CUCUMBER COTYLEONS AND LEAVES EXPOSED TO THE DROUGHT STRESS AND EXCESSIVE UV-B RADIATION
Plants absorb light energy for photosynthesis, and some amount of potentially damaging range of solar radiation, ultraviolet B. It accounts for less than 0.5% of the total solar radiation and the ambient current level of UV-B during the growth season provide 10 kJ·m–2 energy per day on the Earth’s...
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| Format: | Article |
| Language: | English |
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University of Life Sciences in Lublin - Publishing House
2018-11-01
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| Series: | Acta Scientiarum Polonorum: Hortorum Cultus |
| Subjects: | |
| Online Access: | https://czasopisma.up.lublin.pl/index.php/asphc/article/view/21 |
| _version_ | 1797394205881925632 |
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| author | Magdalena Rybus-Zając Jan Kubiś |
| author_facet | Magdalena Rybus-Zając Jan Kubiś |
| author_sort | Magdalena Rybus-Zając |
| collection | DOAJ |
| description |
Plants absorb light energy for photosynthesis, and some amount of potentially damaging range of solar radiation, ultraviolet B. It accounts for less than 0.5% of the total solar radiation and the ambient current level of UV-B during the growth season provide 10 kJ·m–2 energy per day on the Earth’s surface. In the field conditions, increased UV-B radiation is often accompanied by drought, but negative effect of combined stresses is not so deleterious as the effect of one of them alone. We studied some changes in nitrogen me deficit and UV-B radiation. The stresses generally decreased the biomass and total dry matter production. Combination of water deficit and UV-B activated a stress tolerance mechanism in cucumber seedlings. The NR activity and synthesis of UV-B absorbing compounds were induced. Protection against UV-B radiation can partially involve increased production of UV-B protective pigments – slightly increased the SPAD value in cucumber cotyledons and leaves was observed. The deleterious effect of combined stresses was weaker than their additive or individual effects.
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| first_indexed | 2024-03-09T00:15:08Z |
| format | Article |
| id | doaj.art-68b2e513607d44a0bfed8b28c3e39e5a |
| institution | Directory Open Access Journal |
| issn | 1644-0692 2545-1405 |
| language | English |
| last_indexed | 2024-03-09T00:15:08Z |
| publishDate | 2018-11-01 |
| publisher | University of Life Sciences in Lublin - Publishing House |
| record_format | Article |
| series | Acta Scientiarum Polonorum: Hortorum Cultus |
| spelling | doaj.art-68b2e513607d44a0bfed8b28c3e39e5a2023-12-12T07:58:17ZengUniversity of Life Sciences in Lublin - Publishing HouseActa Scientiarum Polonorum: Hortorum Cultus1644-06922545-14052018-11-0117510.24326/asphc.2018.5.3NITROGEN METABOLISM IN CUCUMBER COTYLEONS AND LEAVES EXPOSED TO THE DROUGHT STRESS AND EXCESSIVE UV-B RADIATIONMagdalena Rybus-Zając0Jan Kubiś1Department of Plant Physiology, Poznań University of Life Sciences, ul. Wołyńska 35, 60-637 PoznańDepartment of Plant Physiology, Poznań University of Life Sciences, ul. Wołyńska 35, 60-637 Poznań Plants absorb light energy for photosynthesis, and some amount of potentially damaging range of solar radiation, ultraviolet B. It accounts for less than 0.5% of the total solar radiation and the ambient current level of UV-B during the growth season provide 10 kJ·m–2 energy per day on the Earth’s surface. In the field conditions, increased UV-B radiation is often accompanied by drought, but negative effect of combined stresses is not so deleterious as the effect of one of them alone. We studied some changes in nitrogen me deficit and UV-B radiation. The stresses generally decreased the biomass and total dry matter production. Combination of water deficit and UV-B activated a stress tolerance mechanism in cucumber seedlings. The NR activity and synthesis of UV-B absorbing compounds were induced. Protection against UV-B radiation can partially involve increased production of UV-B protective pigments – slightly increased the SPAD value in cucumber cotyledons and leaves was observed. The deleterious effect of combined stresses was weaker than their additive or individual effects. https://czasopisma.up.lublin.pl/index.php/asphc/article/view/21biomass productioncucumbernitrate reductasenitrateSPAD |
| spellingShingle | Magdalena Rybus-Zając Jan Kubiś NITROGEN METABOLISM IN CUCUMBER COTYLEONS AND LEAVES EXPOSED TO THE DROUGHT STRESS AND EXCESSIVE UV-B RADIATION Acta Scientiarum Polonorum: Hortorum Cultus biomass production cucumber nitrate reductase nitrate SPAD |
| title | NITROGEN METABOLISM IN CUCUMBER COTYLEONS AND LEAVES EXPOSED TO THE DROUGHT STRESS AND EXCESSIVE UV-B RADIATION |
| title_full | NITROGEN METABOLISM IN CUCUMBER COTYLEONS AND LEAVES EXPOSED TO THE DROUGHT STRESS AND EXCESSIVE UV-B RADIATION |
| title_fullStr | NITROGEN METABOLISM IN CUCUMBER COTYLEONS AND LEAVES EXPOSED TO THE DROUGHT STRESS AND EXCESSIVE UV-B RADIATION |
| title_full_unstemmed | NITROGEN METABOLISM IN CUCUMBER COTYLEONS AND LEAVES EXPOSED TO THE DROUGHT STRESS AND EXCESSIVE UV-B RADIATION |
| title_short | NITROGEN METABOLISM IN CUCUMBER COTYLEONS AND LEAVES EXPOSED TO THE DROUGHT STRESS AND EXCESSIVE UV-B RADIATION |
| title_sort | nitrogen metabolism in cucumber cotyleons and leaves exposed to the drought stress and excessive uv b radiation |
| topic | biomass production cucumber nitrate reductase nitrate SPAD |
| url | https://czasopisma.up.lublin.pl/index.php/asphc/article/view/21 |
| work_keys_str_mv | AT magdalenarybuszajac nitrogenmetabolismincucumbercotyleonsandleavesexposedtothedroughtstressandexcessiveuvbradiation AT jankubis nitrogenmetabolismincucumbercotyleonsandleavesexposedtothedroughtstressandexcessiveuvbradiation |