| Effects of chitosan on growth of an aquatic plant (Hydrilla verticillata) in polluted waters with different chemical oxygen demands |
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| 作者姓名： | XU Qiu-jin NIAN Yue-gang JIN Xiang-can YAN Chang-zhou LIU Jin Jiang Gao-ming |
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| 作者单位： | XU Qiu-jin，MAN Yue-gang，JIN Xiang-can，YAN Chang-zhou，LIU Jin，Jiang Gao-ming Lake Research Center，Chinese Research Academy of Environmental Sciences，Beijing 100012，China. Quantitative Vegetation Ecology Institute of Botany，Chinese Academy of Sciences，Beijing 100093，China |
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| 基金项目： | 国家重点基础研究发展计划(973计划)
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国家高技术研究发展计划(863计划) |
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| 摘 要： | Effects of chitosan on a submersed plant, Hydrilla verticillata, were investigated. Results indicated that H. venicillata could prevent ultrastructure phytotoxicities and oxidativereaction from polluted water with high chemical oxygen demand (COD). Superoxide dismutase (SOD) activity and malondialdehyde (MDA) contents in H. verticillata treated with 0.1% chitosan in wastewater increased with high COD (980 mg/L) and decreased with low COD (63 mg/L), respectively. Ultrastructural analysis showed that the stroma and grana of chloroplast basically remained normal. However, plant cells from the control experiment (untreated with chitosan) were vacuolated and the cell interval increased. The relict of protoplast moved to the center, with cells tending to disjoint. Our findings indicate that wastewater with high COD concentration can cause a substantial damage to submersed plant, nevertheless, chitosan probably could alleviate the membrane lipid peroxidization and ultrastructure phytotoxicities, and protect plant cells from stress of high COD concentration polluted water.
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| 收稿时间： | 2/6/2006 12:00:00 AM |
| 修稿时间： | 2006/10/3 0:00:00 |
Effects of chitosan on growth of an aquatic plant (Hydrilla verticillata) in polluted waters with different chemical oxygen demands |
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| XU Qiu-jin,NIAN Yue-gang,JIN Xiang-can,YAN Chang-zhou,LIU Jin,Jiang Gao-ming.Effects of chitosan on growth of an aquatic plant (Hydrilla verticillata) in polluted waters with different chemical oxygen demands[J].Journal of Environmental Sciences,2007,19(2):217-221. |
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| Authors: | XU Qiu-jin NIAN Yue-gang JIN Xiang-can YAN Chang-zhou LIU Jin and Jiang Gao-ming |
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| Affiliation: | 1. Lake Research Center, Chinese Research Academy of Environmental Sciences, Beijing 100012, China
2. Quantitative Vegetation Ecology Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China |
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| Abstract: | Effects of chitosan on a submersed plant, Hydrilla verticillata, were investigated. Results indicated that H. verticillata could prevent ultrastructure phytotoxicities and oxidativereaction from polluted water with high chemical oxygen demand (COD). Superoxide dismutase (SOD) activity and malondialdehyde (MDA) contents in H. verticillata treated with 0.1% chitosan in wastewater increased with high COD (980 mg/L) and decreased with low COD (63 mg/L), respectively. Ultrastructural analysis showed that the stroma and grana of chloroplast basically remained normal. However, plant cells from the control experiment (untreated with chitosan) were vacuolated and the cell interval increased. The relict of protoplast moved to the center, with cells tending to disjoint. Our findings indicate that wastewater with high COD concentration can cause a substantial damage to submersed plant, nevertheless, chitosan probably could alleviate the membrane lipid peroxidization and ultrastructure phytotoxicities, and protect plant cells from stress of high COD concentration polluted water. |
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| Keywords: | antioxdiant enaymes chitosan Hydrilla verticillata malondialdehyde superoxide dismutase ultrastructure plant aquatic growth chitosan Effects demands oxygen chemical different protect stress membrane lipid concentration cause damage protoplast center cells interval |
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