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Publication Type J
Authors Wu, H. F., X. L. Liu, J. M. Zhao, J. B. Yu, Q. Y. Pang and J. H. Feng
Title Toxicological effects of environmentally relevant lead and zinc in halophyte Suaeda salsa by NMR-based metabolomics
Source Ecotoxicology
Author Keywords Metal Toxicology Halophyte NMR Metabolite v-h+-atpase cadmium exposure accumulation spectroscopy expression responses toxicity stress leaves plants
Abstract Lead (Pb) and zinc (Zn) are two typical metal contaminants with high levels in both seawater and sediment in the intertidal zones of the Bohai Sea. Suaeda salsa is the pioneer halophyte plant in the intertidal zones of the Bohai Sea. In the present work, the short (1 week) and long term (1 month) toxicological effects of environmentally relevant concentrations of Pb and Zn were characterized in S. salsa using NMR-based metabolomics combined with antioxidant enzyme activities. After metal exposure for 1 week, no significant metabolic responses were detected in root tissues of S. salsa. The significant metabolic responses included the increase of isocaproate, glucose and fructose, and decrease of malate, citrate and sucrose in root tissues of S. salsa exposed to Pb for 1 month. The increased phosphocholine and betaine, and decreased choline were uniquely found in Zn-exposed samples. The metabolic changes including decreased malate, citrate and sucrose were detected in both Pb and Zn-exposed groups. These metabolic biomarkers revealed that both Pb and Zn exposures could induce osmotic stress and disturbances in energy metabolism in S. salsa after exposures for 1 month. Overall, this work demonstrates that metabolomics can be used to elucidate toxicological effects of environmentally relevant metal contaminants using halophyte S. salsa as the bioindicator.
Author Address [Wu, Huifeng; Liu, Xiaoli; Zhao, Jianmin; Yu, Junbao] Chinese Acad Sci, Key Lab Coastal Zone Environm Proc, Yantai Inst Coastal Zone Res YIC, Yantai 264003, Shandong, Peoples R China. [Wu, Huifeng; Liu, Xiaoli; Zhao, Jianmin; Yu, Junbao] YICCAS, Shandong Prov Key Lab Coastal Zone Environm Proc, Yantai 264003, Shandong, Peoples R China. [Liu, Xiaoli] Chinese Acad Sci, Grad Sch, Beijing 100049, Peoples R China. [Pang, Qiuying] NE Forestry Univ, Alkali Soil Nat Environm Sci Ctr, Harbin 150040, Heilongjiang, Peoples R China. [Pang, Qiuying] Minist Educ, Key Lab Saline Alkali Vegetat Ecol Restorat Oil F, Harbin 150040, Heilongjiang, Peoples R China. Wu, HF (reprint author), Chinese Acad Sci, Key Lab Coastal Zone Environm Proc, Yantai Inst Coastal Zone Res YIC, Yantai 264003, Shandong, Peoples R China. hfwu@yic.ac.cn
ISSN 0963-9292
ISBN 0963-9292
29-Character Source Abbreviation Ecotoxicology
Publication Date Nov
Year Published 2012
Volume 21
Issue 8
Beginning Page 2363-2371
Digital Object Identifier (DOI) 10.1007/s10646-012-0992-2
Unique Article Identifier WOS:000312664900026
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