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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
Source PublicationACTA OCEANOLOGICA SINICA
ISSN0253-505X
Volume31Issue:3Pages:98-108
AbstractThis 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.
Department[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
KeywordThalassia Hemprichii Metal Stress Photosynthetic Pigments Quantum Yield Antioxidant Enzymes
Subject AreaOceanography
Language英语
Funding ProjectLTO
WOS IDWOS:000305262200010
Citation statistics
Document Type期刊论文
Identifierhttp://ir.scsio.ac.cn/handle/344004/10175
Collection热带海洋环境国家重点实验室(LTO)
Corresponding Authorxphuang@scsio.ac.cn
Recommended Citation
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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