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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Habib, Khalid Kumar, Satyendra Fatma, Tasneem |
| Description | Country affiliation: India Author Affiliation: Kumar S ( Department of Biosciences, Jamia Millia Islamia Central University, New Delhi -110025, India. satya3369@gmail.com) |
| Abstract | Pesticide contamination in aquatic ecosystem including paddy fields is a serious global environmental concern. Cyanobacteria are also affected by pesticides as non- target organism. For better exploitation of cyanobacteria as biofertiliser, it is indispensable to select tolerant strains along with understanding of their tolerance. Three cyanobacterial strains viz. Aulosira fertilissima, Anabaena variabilis and Nostoc muscorum were studied for their stress responses to an organochlorine pesticide 'endosulfan' with special reference to oxidative stress, role of proline and antioxidant enzymes in endosulfan induced free radical detoxification. Reduction in growth, photosynthetic pigments and carbohydrate of the test microorganisms were accompanied with increase in their total protein, proline, malondialdehye (MDA), superoxide dismutase (SOD), ascorbate peroxidase (APX) and catalase (CAT) in higher endosulfan doses. Increased amount of MDA is indicative of formation of free radicals, while increased level of CAT, APX, SOD and proline indicated their involvement in free radical scavenging mechanism. In lower concentrations, test pesticide showed increase in photosynthetic pigments. Order of tolerance was Nostoc muscorum>Anabaena variabilis>Aulosira fertilissima. |
| ISSN | 00489697 |
| Issue Number | 1-3 |
| Volume Number | 403 |
| e-ISSN | 18791026 |
| Journal | Science of The Total Environment |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2008-09-15 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Cyanobacteria Drug Effects Endosulfan Toxicity Insecticides Ascorbate Peroxidases Bacterial Proteins Metabolism Catalase Physiology Dose-response Relationship, Drug Ecosystem Free Radical Scavengers Malondialdehyde Oxidative Stress Peroxidases Photosynthetic Reaction Center Complex Proteins Proline Superoxide Dismutase Journal Article Research Support, Non-u.s. Gov't Discipline Environmental Science |
| Content Type | Text |
| Resource Type | Article |
| Subject | Environmental Chemistry Waste Management and Disposal Pollution Environmental Engineering |
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