Chlorophyll a Fluorescence and Photosynthetic Activity as Tools for the Evaluation of Simazine Toxicity to Protosiphon botryoides and Anabaena variabilis

On studying the effect of simazine on Protosiphon botryoides and Anabaena variabilis, data revealed that chlorophyll a content and dry weight were decreased with the increase in simazine concentration. High concentration of simazine (0.8 mg L−1) reduced gross photosynthesis and carbohydrate content,...

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Bibliographic Details
Published in:Ecotoxicology and environmental safety 2001-06, Vol.49 (2), p.101-105
Main Authors: Kobbia, I.A., Battah, M.G., Shabana, E.F., Eladel, H.M.
Format: Article
Language:English
Subjects:
algae
Anabaena
Anabaena - drug effects
Anabaena - growth & development
Anabaena - metabolism
Anabaena variabilis
Animal, plant and microbial ecology
Applied ecology
Biological and medical sciences
Carbohydrate Metabolism
Cell Count
Chlorophyll - metabolism
Chlorophyta - drug effects
Chlorophyta - growth & development
Chlorophyta - metabolism
Dose-Response Relationship, Drug
Ecotoxicology, biological effects of pollution
Effects of pollution and side effects of pesticides on plants and fungi
Fluorescence
Fundamental and applied biological sciences. Psychology
herbicide
Herbicides - toxicity
photosynthesis
Photosynthesis - drug effects
Plant Proteins - metabolism
Protosiphon
Protosiphon botryoides
recovery
respiration
simazine
Simazine - toxicity
Time Factors
Toxicity Tests
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Summary:On studying the effect of simazine on Protosiphon botryoides and Anabaena variabilis, data revealed that chlorophyll a content and dry weight were decreased with the increase in simazine concentration. High concentration of simazine (0.8 mg L−1) reduced gross photosynthesis and carbohydrate content, whereas protein content and respiration rate were increased. Algal cell recovery from simazine toxic effect occurred after 2 and 4 days for Anabaena and Protosiphon, respectively, which may be attributed to the difference in algal genotype of the tested organisms.
ISSN:0147-6513
1090-2414
DOI:10.1006/eesa.2000.1955