Amaranthine Plays an Important Role in Photoprotection forAlternanthera SessilisUnder Photooxidative Stress
| Autor: | Chang-Lian Peng, Ling Shao, Xiong-Wei Chen, Li-Ying Song, Yuan-Jun Chen, Qiang Zhang |
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| Rok vydání: | 2013 |
| Předmět: | |
| Zdroj: | Biotechnology & Biotechnological Equipment. 27:3791-3797 |
| ISSN: | 1314-3530 1310-2818 |
| DOI: | 10.5504/bbeq.2013.0024 |
| Popis: | To reveal the potential role of amaranthine in photoprotection, the effects of photooxidative stress induced by methyl viologen (10 μmol-L−1) in the light (100 μmol-m−2-s−1) were investigated in the leaves of two ecotypes of Alternanthera sessilis (L.) DC: a red-leaf ecotype, RE; and another, green-leaf ecotype, GE). Photooxidative stress caused decreased contents of chlorophyll, total phenolics and flavonoid, decreased total antioxidative capacity (DPPH* scavenging capacity), photochemical efficiency, and increased cell death rate in the leaves of both A. sessilis ecotypes. However, the RE-ecotype showed better tolerance to photooxidation than the GE-ecotype. Correspondingly, the amaranthine level in the RE-ecotype (control) was 35 times as high as that in the GE-ecotype (control). The better tolerance to photooxidation in the RE-ecotype was mostly related to the potential role of amaranthine. Our results implied that amaranthine could be used in the detoxification pathway in anti-photooxidation ... |
| Databáze: | OpenAIRE |
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