Phytotoxicity of methyl parathion with special reference to photosynthesis in wheat seedlings

Wheat seedlings were grown in the presence of 20 100 mu M methyl parathion to test the phytotoxic properties of the insecticide. Methyl parathion inhibited root and shoot elongation in seedlings, an effect that increased with dose. The amount of photosynthetic pigments also decreased in treated plan...

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Veröffentlicht in:	Bulletin of environmental contamination and toxicology 1992-01, Vol.48 (1), p.138-143
Hauptverfasser:	Moorthy, P. (The American College, Madurai, India), Gopinandhan, T.N, Santhanam, R, Balakumar, T, Anbudurai, P.R
Format:	Artikel
Sprache:	eng
Schlagworte:	Agrochemicals products Biological and medical sciences Carotenoids - metabolism Chlorophyll - metabolism CRECIMIENTO CROISSANCE FITOTOXICIDAD FOTOSINTESIS Fundamental and applied biological sciences. Psychology GROWTH INSECTICIDAS INSECTICIDE INSECTICIDES Invertebrates MEMBRANA MEMBRANE MEMBRANES Methyl Parathion - toxicity PARATHION-METHYL Pesticides used against invertebrates PHOTOSYNTHESE PHOTOSYNTHESIS Photosynthesis - drug effects Phytopathology. Animal pests. Plant and forest protection PHYTOTOXICITE PHYTOTOXICITY PLANTULAS PLANTULE PLASTE PLASTIDIOS PLASTIDS Pollution effects and side effects of agrochemicals on crop plants and forest trees. Other anthropogenic factors Pollution effects. Side effects of agrochemicals SEEDLINGS STRUCTURE ACTIVITY RELATIONSHIPS THYLAKOIDS Triticum - growth & development Triticum - metabolism TRITICUM AESTIVUM
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Beschreibung
Zusammenfassung:	Wheat seedlings were grown in the presence of 20 100 mu M methyl parathion to test the phytotoxic properties of the insecticide. Methyl parathion inhibited root and shoot elongation in seedlings, an effect that increased with dose. The amount of photosynthetic pigments also decreased in treated plants, with the decrease in carotenoid content more pronounced than that of chlorophyll. A reduction in chlorophyll- beta indicates a sharp decline in the amount of light-harvesting chlorophyll in the chloroplasts of exposed seedlings.
ISSN:	0007-4861 1432-0800
DOI:	10.1007/BF00197496