Assessing interactions between environmental factors and aquatic toxicity: Influences of dissolved CO2 and light on Cd toxicity in the aquatic macrophyte Potamogeton crispus
文献类型：期刊论文
| 作者 | Huang, Wenmin2,3; Han, Shijuan2,4; Zhou, Qin1; Li, Wei2,3; Xing, Wei2,3 |
| 刊名 | AQUATIC TOXICOLOGY
 |
| 出版日期 | 2019-07-01 |
| 卷号 | 212页码:247-258 |
| ISSN号 | 0166-445X |
| 关键词 | Potamogeton crispus Cd toxicity Chlorophyll fluorescence Photosynthesis Antioxidant system |
| DOI | 10.1016/j.aquatox.2019.05.005 |
| 英文摘要 | The objective of this study was to investigate the combined effects of varying dissolved CO2 concentration (ambient CO2, 3(similar to)17 mu mol L-1, elevated CO2, 48(similar to)81 mu mol L-1) and light intensity (high light, c. 150 mu mol photon m(-2) s(-1) low light, c. 25 mu mol photon m(-2) s(-1)) on the bioaccumulation and phytotoxicity of cadmium (Cd) in a macrophyte Potamogeton crispus, under constant Cd exposure. The data confirmed that 100 mu M Cd led to adverse changes in morphology, ultrastructure and biochemistry in P. crispus. The toxic effects depended strongly on CO2 concentration and light intensity: elevated CO2 and high light both increased Cd concentrations in P. crispus, and there was a significant interaction between the two factors. Compared to high light grown plants, the photochemical efficiency and chlorophyll content of low light grown P. crispus were much less affected and the MDA content was lower, when exposed to 100 mu M Cd. In addition, an antioxidative response was observed with a significant increase in SOD, POD and GST activities, indicating that low light grown P. crispus are more protected against Cd toxicity. When compared with ambient CO2 concentrations, chlorophyll content, chlorophyll fluorescence, photosynthetic rate and starch content, as well as the activity of SOD and GST, were significantly enhanced in Cd treated P. crispus under elevated CO2. This suggests that elevated CO2 reduced Cd toxicity in P. crispus by increasing photosynthesis and enhancing the antioxidant system. Moreover, the statistical results showed that dissolved CO2 and light had additive effects on Cd toxicity in P. crispus, reflected by the physiological parameters of total chlorophyll content, SOD activity and MDA content, indicating that the combination of high CO2 and low light produced more protection against Cd toxicity than did the factors alone. Based on the results of this study, it appears clear that referring to a specific site in aquatic ecosystem, dissolved CO2 concentration and light availability should be considered when assessing and managing Cd impacts on aquatic plants. |
| 资助项目 | National Natural Science Foundation of China[31870346] ; National Natural Science Foundation of China[31370479] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB31000000] ; National Key Research and Development Program of China[2016YFA0601000] |
| WOS研究方向 | Marine & Freshwater Biology ; Toxicology |
| 语种 | 英语 |
| 出版者 | ELSEVIER SCIENCE BV |
| WOS记录号 | WOS:000472694000027 |
| 源URL | [http://202.127.146.157/handle/2RYDP1HH/8176]  |
| 专题 | 中国科学院武汉植物园 |
| 通讯作者 | Li, Wei; Xing, Wei |
| 作者单位 | 1.Hubei Univ, Sch Resources & Environm Sci, Wuhan 430074, Hubei, Peoples R China 2.Chinese Acad Sci, CAS Key Lab Aquat Bot & Watershed Ecol, Wuhan Bot Garden, Wuhan 430074, Hubei, Peoples R China 3.Chinese Acad Sci, Ctr Plant Ecol, Core Bot Gardens, Wuhan 430074, Hubei, Peoples R China 4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China |
| 推荐引用方式 GB/T 7714 | Huang, Wenmin,Han, Shijuan,Zhou, Qin,et al. Assessing interactions between environmental factors and aquatic toxicity: Influences of dissolved CO2 and light on Cd toxicity in the aquatic macrophyte Potamogeton crispus[J]. AQUATIC TOXICOLOGY,2019,212:247-258. |
| APA | Huang, Wenmin,Han, Shijuan,Zhou, Qin,Li, Wei,&Xing, Wei.(2019).Assessing interactions between environmental factors and aquatic toxicity: Influences of dissolved CO2 and light on Cd toxicity in the aquatic macrophyte Potamogeton crispus.AQUATIC TOXICOLOGY,212,247-258. |
| MLA | Huang, Wenmin,et al."Assessing interactions between environmental factors and aquatic toxicity: Influences of dissolved CO2 and light on Cd toxicity in the aquatic macrophyte Potamogeton crispus".AQUATIC TOXICOLOGY 212(2019):247-258. |
入库方式： OAI收割
来源：武汉植物园
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