Exogenous 2,4-Epibrassinolide Treatment Maintains the Quality of Carambola Fruit Associated With Enhanced Antioxidant Capacity and Alternative Respiratory Metabolism
| Autor: | Junyi Li, Zunyang Song, Shuangling Xiao, Weixin Chen, Chen Yuxin, Silin Fan, Xiaoyang Zhu, Xiaochun Ding, Xueping Li |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
Senescence Antioxidant carambola fruit respiratory metabolism medicine.medical_treatment Dehydrogenase Plant Science antioxidant capacity 01 natural sciences 040501 horticulture SB1-1110 chemistry.chemical_compound medicine Cytochrome c oxidase Food science Original Research Brassinolide Vitamin C biology Chemistry fruit quality food and beverages Plant culture Ripening 04 agricultural and veterinary sciences brassinolide biology.protein 0405 other agricultural sciences Respiration rate 010606 plant biology & botany |
| Zdroj: | Frontiers in Plant Science, Vol 12 (2021) Frontiers in Plant Science |
| Popis: | Brassinosteroids act by delaying fruit ripening. The effects of different concentrations of 2,4-epibrassinolide (eBL) treatments on carambola fruit ripening were investigated. The results show that treatment of 2.8 mg L–1, eBL with 10 min effectively delays ripening and maintains the quality of carambola fruit. This is achieved by retarding color changes and firmness losses while maintaining high level of soluble protein content and vitamin C, and low organic acid content. eBL-delayed senescence may be due to the inhibition of respiration rate and enhanced antioxidant system. It is noteworthy that eBL treatment markedly reduces the content of fructose-6-phosphate (6-P-F) and enhances the activity of cytochrome oxidase (CCO), and the total activity of glucose-6-phosphate dehydrogenase (G-6-PDH) and 6-phosphate gluconate dehydrogenase (6-PGDH). eBL treatment induces the IAA and GA contents but reduces that of ABA. In general, senescence retardation and quality improvement by eBL treatment may be due to the enhanced antioxidant capacity and altered respiratory pathways. |
| Databáze: | OpenAIRE |
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