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Effects of sodium azide and trifluoperazine on growth, development and monolayer cell differentiation inDictyostelium discoideum

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Abstract

The effects of sodium azide and trifluoperazine on growth, cAMP-chemotaxis, morphogenesis and cell differentiation in the slime mouldDictyostelium discoideum were examined. Growth rate of cells pretreated with low chemical concentrations was reduced directly after the treatment but was partially recovered within two to three hours. The levels of growth inhibition were directly proportional to the chemical concentrations. Low concentrations of trifluoperazine (1 μM) had no clear effect on the morphogenesis of the wild type strain HM27, but induced partial phenotype correction in the final fruiting body of the sporogenous mutant HM28. On the other hand, all relatively non toxic treatments with sodium azide had no effect on morphogenesis of both strains and on cell differentiation of the wild type strain HM27. Both trifluoperazine and sodium azide shifted cell differentiation of the sporogenous mutant HM28 in monolayers from spore- to stalk-pathway. Higher concentrations of both chemicals inhibited cell differentiation in all strains completely. The results indicated that these chemicals influenced the effects of the sporogenous locus which plays a role in the spore/stalk determination mechanism in the sporogenous mutant HM28.

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  1. Department of Biological Sciences, Faculty of Science, Yarmouk University, Irbid, Jordan

    May F. Sadiq

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Sadiq, M.F. Effects of sodium azide and trifluoperazine on growth, development and monolayer cell differentiation inDictyostelium discoideum . J. Biosci. 20, 481–491 (1995). https://doi.org/10.1007/BF02703531

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  • DOI: https://doi.org/10.1007/BF02703531

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