The seasonal variation of redox status in komatsuna ( Brassica rapa var. perviridis ) leaves
| Autor: | Takehiro Fujita, Toshio Onishi, Yoshihiro Imahori, Shigeyuki Naitoh, Haruna Endo, Kazuki Kodera |
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| Rok vydání: | 2016 |
| Předmět: |
0106 biological sciences
Antioxidant Ascorbate glutathione cycle biology medicine.medical_treatment Glutathione reductase 04 agricultural and veterinary sciences Horticulture Reductase Ascorbic acid APX 01 natural sciences 040501 horticulture Superoxide dismutase Catalase Botany biology.protein medicine 0405 other agricultural sciences 010606 plant biology & botany |
| Zdroj: | Scientia Horticulturae. 210:49-56 |
| ISSN: | 0304-4238 |
| DOI: | 10.1016/j.scienta.2016.07.010 |
| Popis: | The objective of this research was to evaluate seasonal variations in antioxidant metabolism of komatsuna leaves. Komatsuna, cv. ‘Hitomi’, was harvested in summer and winter seasons. The level of hydrogen peroxide, a preventive ROS, was significantly higher in the summer leaves. Meanwhile, the activity of superoxide dismutase (SOD) was significantly higher in the summer leaves. On the other hand, the levels of ascorbate, reduced glutathione and total antioxidant capacity (TAC) were significantly higher in the winter leaves. Meanwhile, similar trends were observed in the activities of antioxidant-related enzymes including catalase (CAT), ascorbate peroxidase (APX), dehydroascorbate reductase (DHAR), monodehydroascorbate reductase (MDHAR) and glutathione reductase (GR) as well – higher in the winter leaves. These results indicate that the antioxidant metabolism of komatsuna leaves responded differently to the high summer temperature, and low winter temperature stresses. |
| Databáze: | OpenAIRE |
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