Reactive Oxygen Species Acts as an Important Inducer in Low-temperature-induced Anthocyanin Biosynthesis in Begonia semperflorens
| Autor: | Ying Qu, Yang Wang, Yajun Zhu, Xue Bai, Rui Qi, Yonghua Li, Kaiming Zhang, Geng Tian |
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| Rok vydání: | 2018 |
| Předmět: |
0106 biological sciences
0301 basic medicine chemistry.chemical_classification Reactive oxygen species biology Chemistry food and beverages Horticulture biology.organism_classification 01 natural sciences Temperature induced 03 medical and health sciences 030104 developmental biology Biochemistry Anthocyanin biosynthesis Begonia Genetics Inducer 010606 plant biology & botany |
| Zdroj: | Journal of the American Society for Horticultural Science. 143:486-493 |
| ISSN: | 2327-9788 0003-1062 |
| Popis: | Leaves of Begonia semperflorens accumulate anthocyanins and turn red under low temperature (LT). In the present work, LT increased H2O2 content and superoxide anions production rate, causing significant increases in the activities of enzymes and contents of reduced components involved in the ascorbate-glutathione cycle (AsA-GSH cycle). As a result, LT-exposed seedlings increased the expression of genes involved in anthocyanin biosynthesis, and accumulated anthocyanin. Based on LT condition, application of N,N'-dimethylthiourea (DMTU) decreased reactive oxygen species (ROS) content, and unbalanced the AsA-GSH-controlled redox homeostasis. As a result, seedlings in the LT + DMTU group did not accumulate anthocyanin. Our results suggest that ROS may act as an important inducer in LT-induced anthocyanin biosynthesis. |
| Databáze: | OpenAIRE |
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