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Antioxidant enzyme activities of Microcystis aeruginosa in response to nonylphenols and degradation of nonylphenols by M-aeruginosa
Jingxian Wang; Ping Xie; Xie, P, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stat Lake Ecosyst, Wuhan 430072, Peoples R China
2007-10-01
Source PublicationENVIRONMENTAL GEOCHEMISTRY AND HEALTH
ISSN0269-4042
Volume29Issue:5Pages:375-383
AbstractThe aim of this study was to examine the effects of chemical nonylphenols (NPs) on the antioxidant system of Microcystis aeruginosa strains. The degradation and sorption of NPs by M. aeruginosa were also evaluated. High concentrations of NPs (1 and 2 mg/l) were found to cause increases in superoxidase dismutase (SOD) and glutathione-S-transferase (GST) activities and in glutathione (GSH) levels. These results suggest that toxic stress manifested by elevated SOD and GST levels and GSH contents may be responsible for the toxicity of NPs to M. aeruginosa and that the algal cells could improve their antioxidant and detoxification ability through the enhancement of enzymatic and nonenzymatic prevention substances. The observed elevations in GSH levels and GST activities were relatively higher than those in SOD activities, indicating that GSH and GST contributed more in eliminating toxic effects than SOD. Low concentrations of NPs (0.05-0.2 mg/l) enhanced cell growth and decreased GST activity in algal cells of M. aeruginosa, suggesting that NPs may have acted as a protecting factor, such as an antioxidant. The larger portion of the NPs (> 60%) disappeared after 12 days of incubation, indicating the strong ability of M. aeruginosa to degrade the moderate persistent NP compounds. The sorption ratio of M. aeruginosa after a 12-day exposure to low nominal concentrations of NPs (0.02-0.5 mg/l) was relatively high (> 30%). The fact that M. aeruginosa effectively resisted the toxic effects of NPs and strongly degraded these pollutants indicate that M. aeruginosa cells have a strong ability to adapt to variations in environmental conditions and that low and moderate concentrations of organic compounds may favor its survival. Further studies are needed to provide detailed information on the fate of persistent organic pollutants and the survival of algae and to determine the possible role of organic pollutants in the occurrence of water blooms in eutrophic lakes.; The aim of this study was to examine the effects of chemical nonylphenols (NPs) on the antioxidant system of Microcystis aeruginosa strains. The degradation and sorption of NPs by M. aeruginosa were also evaluated. High concentrations of NPs (1 and 2 mg/l) were found to cause increases in superoxidase dismutase (SOD) and glutathione-S-transferase (GST) activities and in glutathione (GSH) levels. These results suggest that toxic stress manifested by elevated SOD and GST levels and GSH contents may be responsible for the toxicity of NPs to M. aeruginosa and that the algal cells could improve their antioxidant and detoxification ability through the enhancement of enzymatic and nonenzymatic prevention substances. The observed elevations in GSH levels and GST activities were relatively higher than those in SOD activities, indicating that GSH and GST contributed more in eliminating toxic effects than SOD. Low concentrations of NPs (0.05-0.2 mg/l) enhanced cell growth and decreased GST activity in algal cells of M. aeruginosa, suggesting that NPs may have acted as a protecting factor, such as an antioxidant. The larger portion of the NPs (> 60%) disappeared after 12 days of incubation, indicating the strong ability of M. aeruginosa to degrade the moderate persistent NP compounds. The sorption ratio of M. aeruginosa after a 12-day exposure to low nominal concentrations of NPs (0.02-0.5 mg/l) was relatively high (> 30%). The fact that M. aeruginosa effectively resisted the toxic effects of NPs and strongly degraded these pollutants indicate that M. aeruginosa cells have a strong ability to adapt to variations in environmental conditions and that low and moderate concentrations of organic compounds may favor its survival. Further studies are needed to provide detailed information on the fate of persistent organic pollutants and the survival of algae and to determine the possible role of organic pollutants in the occurrence of water blooms in eutrophic lakes.
SubtypeArticle
KeywordAntioxidant System Degradation Glutathione Glutathione S-transferase Microcystis Nonylphenols Superoxide Dismutase Sorption
DepartmentChinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stat Lake Ecosyst, Wuhan 430072, Peoples R China
Subject AreaEngineering, Environmental ; Environmental Sciences ; Public, Environmental & Occupational Health ; Water Resources
DOI10.1007/s10653-007-9081-5
WOS HeadingsScience & Technology ; Technology ; Life Sciences & Biomedicine ; Physical Sciences
Indexed BySCI
Language英语
WOS Research AreaEngineering ; Environmental Sciences & Ecology ; Public, Environmental & Occupational Health ; Water Resources
WOS SubjectEngineering, Environmental ; Environmental Sciences ; Public, Environmental & Occupational Health ; Water Resources
WOS IDWOS:000249656200002
WOS KeywordAQUATIC MICROCOSMS ; OXIDATIVE STRESS ; SEWAGE-TREATMENT ; ENGLISH RIVERS ; BED-SEDIMENTS ; BIODEGRADATION ; 4-NONYLPHENOL ; ETHOXYLATES ; BEHAVIOR ; SORPTION
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Document Type期刊论文
Identifierhttp://ir.ihb.ac.cn/handle/152342/8424
Collection期刊论文
Corresponding AuthorXie, P, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stat Lake Ecosyst, Wuhan 430072, Peoples R China
AffiliationChinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stat Lake Ecosyst, Wuhan 430072, Peoples R China
Recommended Citation
GB/T 7714
Jingxian Wang,Ping Xie,Xie, P, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stat Lake Ecosyst, Wuhan 430072, Peoples R China. Antioxidant enzyme activities of Microcystis aeruginosa in response to nonylphenols and degradation of nonylphenols by M-aeruginosa[J]. ENVIRONMENTAL GEOCHEMISTRY AND HEALTH,2007,29(5):375-383.
APA Jingxian Wang,Ping Xie,&Xie, P, Chinese Acad Sci, Inst Hydrobiol, State Key Lab Freshwater Ecol & Biotechnol, Donghu Expt Stat Lake Ecosyst, Wuhan 430072, Peoples R China.(2007).Antioxidant enzyme activities of Microcystis aeruginosa in response to nonylphenols and degradation of nonylphenols by M-aeruginosa.ENVIRONMENTAL GEOCHEMISTRY AND HEALTH,29(5),375-383.
MLA Jingxian Wang,et al."Antioxidant enzyme activities of Microcystis aeruginosa in response to nonylphenols and degradation of nonylphenols by M-aeruginosa".ENVIRONMENTAL GEOCHEMISTRY AND HEALTH 29.5(2007):375-383.
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