Photosynthetic activity and antioxidative response of seagrass Thalassia hemprichii to trace metal stress
文献类型：期刊论文
| 作者 | Li, L ; Huang, XP ; Borthakur, D ; Ni, H |
| 刊名 | ACTA OCEANOLOGICA SINICA
 |
| 出版日期 | 2012 |
| 卷号 | 31期号:3页码:98-108 |
| 关键词 | Thalassia hemprichii metal stress photosynthetic pigments quantum yield antioxidant enzymes |
| ISSN号 | 0253-505X |
| 通讯作者 | xphuang@scsio.ac.cn |
| 中文摘要 | This study concerned the accumulation of trace metals in tissues of seagrass (Thalassia hemprichii) exposed to various concentrations of Zn2+, Cd2+, Pb2+ and Cu2+ for 10 d, and the effect of excessive metals on quantum yield (Delta F/F-m'), photosynthetic pigments and antioxidative enzymes like superoxide dismutase (SOD), guaiacol peroxidase (POD) were also examined. Cadmium was the most highly accumulated metal. Meanwhile, high metals levels led to a remarkable breakdown of photosynthetic parameters. Especially, Delta F/F-m', chlorophyll and carotenoid were significantly low during prolonged Cu exposure. Besides, Delta F/F-m' was more severely depressed by Cu and Zn than Ph and Cd. However, T. hemprichii had positive response by increasing the activity of SOD and POD. The results indicate that T. hemprichii is the most sensitive to Cu, and the antioxidative protection mechanisms of T. hemprichii are more efficiently activated to avoid damage of Zn, Cd and Pb stress. Finally, due to the high Cd-accumulation and strong Cd-tolerance capacity, T. hemprichii can be used for phytoremediation in Cd-contaminated areas. |
| 学科主题 | Oceanography |
| 语种 | 英语 |
| WOS记录号 | WOS:000305262200010 |
| 公开日期 | 2013-08-28 |
| 源URL | [http://ir.scsio.ac.cn/handle/344004/10175]  |
| 专题 | 南海海洋研究所_热带海洋环境国家重点实验室(LTO) |
| 推荐引用方式 GB/T 7714 | Li, L,Huang, XP,Borthakur, D,et al. Photosynthetic activity and antioxidative response of seagrass Thalassia hemprichii to trace metal stress[J]. ACTA OCEANOLOGICA SINICA,2012,31(3):98-108. |
| APA | Li, L,Huang, XP,Borthakur, D,&Ni, H.(2012).Photosynthetic activity and antioxidative response of seagrass Thalassia hemprichii to trace metal stress.ACTA OCEANOLOGICA SINICA,31(3),98-108. |
| MLA | Li, L,et al."Photosynthetic activity and antioxidative response of seagrass Thalassia hemprichii to trace metal stress".ACTA OCEANOLOGICA SINICA 31.3(2012):98-108. |
入库方式： OAI收割
来源：南海海洋研究所
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