Photosynthetic activity and antioxidative response of seagrass Thalassia hemprichii to trace metal stress
Li, L; Huang, XP; Borthakur, D; Ni, H; xphuang@scsio.ac.cn
2012
发表期刊ACTA OCEANOLOGICA SINICA
ISSN0253-505X
卷号31期号:3页码:98-108
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.
部门归属[Li Lei; Huang Xiaoping] Chinese Acad Sci, S China Sea Inst Oceanol, State Key Lab Trop Oceanog, Guangzhou 510301, Guangdong, Peoples R China; [Li Lei] Chinese Acad Sci, Grad Univ, Beijing I00049, Peoples R China; [Li Lei] Chinese Acad Sci, Trop Marine Biol Res Stn Hainan, Sanya 572200, Peoples R China; [Li Lei] Sci & Technol Lib Guangdong Prov, Guangzhou 510070, Guangdong, Peoples R China; [Borthakur, Devajit] Tea Res Assoc, Tocklai Expt Stn, Jorhat 785008, Assam, India; [Ni Hui] Heze Univ, Foreign Language Dept, Heze 274000, Peoples R China
关键词Thalassia Hemprichii Metal Stress Photosynthetic Pigments Quantum Yield Antioxidant Enzymes
学科领域Oceanography
语种英语
资助项目LTO
WOS记录号WOS:000305262200010
引用统计
被引频次:10[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.scsio.ac.cn/handle/344004/10175
专题热带海洋环境国家重点实验室(LTO)
通讯作者xphuang@scsio.ac.cn
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,&xphuang@scsio.ac.cn.(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.
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