Growth responses of achlorophyllous Euglena gracilis to selected concentrations of cadmium and pentachlorophenol

The growth response of a wild achlorophyllous Euglena gracilis mutant was studied during exposure to cadmium and pentachlorophenol (PCP). Cadmium gradually reduced the growth rate and terminal cell density; PCP only lengthened the initial lag phase relative to control cultures. Flow cytometry showed...

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Bibliographic Details
Published in:Archives of environmental contamination and toxicology 1995-01, Vol.28 (1), p.8-12
Main Authors: Barque, J. (Faculte de Pharmacie, Chatenay-Malabry, France.), Abahamid, A, Bourezgui, Y, Chacun, H, Bonaly, J
Format: Article
Language:English
Subjects:
Animal, plant and microbial ecology
Animals
Applied ecology
Biological and medical sciences
CADMIO
CADMIUM
Cadmium - pharmacology
CELL CULTURE
CELL DIVISION
CULTIVO DE CELULAS
CULTURE DE CELLULE
DIVISION CELLULAIRE
DIVISION CELULAR
Ecotoxicology, biological effects of pollution
Effects of pollution and side effects of pesticides on plants and fungi
Euglena gracilis - drug effects
Euglena gracilis - growth & development
Fundamental and applied biological sciences. Psychology
GROWTH RATE
INDICE DE CRECIMIENTO
MASTIGOPHORA
MUTANT
MUTANTES
MUTANTS
Pentachlorophenol - pharmacology
PESTICIDE
PESTICIDES
PLAGUICIDAS
TAUX DE CROISSANCE
Time Factors
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Summary:The growth response of a wild achlorophyllous Euglena gracilis mutant was studied during exposure to cadmium and pentachlorophenol (PCP). Cadmium gradually reduced the growth rate and terminal cell density; PCP only lengthened the initial lag phase relative to control cultures. Flow cytometry showed that cadmium altered the cell cycle by delaying late S and G2/M phases; PCP did not disturb the cell cycle, but markedly affected DNA staining: the intercalating dyes ethidium bromide and propidium iodide showed little staining compared to controls. However, replication and transcription processes were not altered by PCP, as cell division occurred normally. Cells surviving after PCP treatment apparently developed an adaptative response during the lag phase.
ISSN:0090-4341
1432-0703
DOI:10.1007/BF00213962