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| Content Provider | World Health Organization (WHO)-Global Index Medicus |
|---|---|
| Author | Jena, Sridevi Acharya, S. Mohapatra, P. K. |
| Description | Country affiliation: India Author Affiliation: Jena S ( P.G. Department of Botany, Utkal University, Bhubaneswar 751004, India.) |
| Abstract | Effects of the insecticides quinalphos, chlorfenvinphos, dimethoate and phorate on photosystem activity of Chlorella vulgaris were investigated by different chlorophyll fluorescence measurements. Exposure to each of the insecticides increased the proportion of inactivated PS II reaction center. Quinalphos and chlorfenvinphos caused OJIP fluorescence reduction at all levels by decreasing the proportion of Q(A)-reducing PS II reaction centers (RCs). The other two insecticides affected OJIP fluorescence rise by hindering the electron transport beyond Q(A). Insecticide treatment resulted in decrease of the density of active RC and performance indices (PI) by enhanced dissipated energy flux per active RC. Antenna size was severely minimized by quinalphos and chlorfenvinphos treatment whereas other two insecticides had no such effect. Each insecticide treatment caused increase of photosystem antenna/core and PS II/PS I fluorescence ratios. Quinalphos and chlorfenvinphos affected the donor sides of photosystems whereas dimethoate and phorate inhibited electron transfer beyond Q(A) (acceptor side). |
| File Format | HTM / HTML |
| ISSN | 01476513 |
| Volume Number | 80 |
| e-ISSN | 10902414 |
| Journal | Ecotoxicology and Environmental Safety |
| Language | English |
| Publisher | Elsevier |
| Publisher Date | 2012-06-01 |
| Publisher Place | Netherlands |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Discipline Environmental Sciences Chlorella Vulgaris Drug Effects Insecticides Toxicity Organophosphorus Compounds Photosynthesis Water Pollutants, Chemical Chlorfenvinphos Chlorophyll Metabolism Dimethoate Electron Transport Fluorescence Organothiophosphorus Compounds Phorate Journal Article Research Support, Non-u.s. Gov't |
| Content Type | Text |
| Resource Type | Article |
| Subject | Pollution Health, Toxicology and Mutagenesis Public Health, Environmental and Occupational Health |
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