期刊
MARINE POLLUTION BULLETIN
卷 109, 期 1, 页码 325-333出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2016.05.062
关键词
Antioxidant response; Biomarker; Zostera japonica; Heavy metals; Seagrass
资金
- National Basic Research Program of China (973) [2013CB430402]
- National Science & Technology Basic Work Program [2015FY110600]
- National Marine Public Welfare Research Project [201305043]
- Natural Science Foundation of China [41406164]
To investigate the potential influences of anthropogenic pollutants, we evaluated the responses of the intertidal seagrass Zostera japonica to three heavy metals: copper (Cu), lead (Pb), and cadmium (Cd). Z. japonica was exposed to various concentrations of Cu, Pb, and Cd (0, 0.5, 5, 50 mu M) over seven days. The effects were then analyzed using the antioxidant enzyme catalase (CAT), superoxide dismutase (SOD), peroxidase (POD), glutathione peroxidase (GPX), and lipid peroxidation measured using malondialdehyde (MDA) as proxy. Metal accumulation in the above-ground tissues and phenotypic changes were also investigated. Our results revealed that heavy metal concentration increased in seagrass exposed to high levels of metals. Z. japonica has great potential for metal accumulation and a suitable candidate for the decontamination of moderately Cu contaminated bodies of water and can also potentially enhanced efforts of environmental decontamination, either through phytoextraction abilities or by functioning as an indicator for monitoring programs that use SOD, CAT, GPX, POD and MDA as biomarkers. (C) 2016 Elsevier Ltd. All rights reserved.
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