The effect of temperature onshibire
ts cell clones in the compound eye ofDrosophila melanogaster |
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Authors: | Ursula Dietrich J A Campos-Ortega |
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Institution: | (1) Institut für Biologie III, Schänzlestr. 1, D-7800 Freiburg i.Br., Federal Republic of Germany |
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Abstract: | Summary We have analysed the effect of temperature on both developing and adult eye cell clones homozygous forshi
ST139, a temperature-sensitive mutant ofDrosophila melanogaster. The mutant gene, autonomous in its cellular expression, causes structural modifications of ommatidial cells when adult clones of cells are exposed to the restrictive temperature (29°C) for several days. However, the mutant phenotype reverses to normal within 4 days at the permissive temperature (20°C). The results of pulse, shift-up and shift-down experiments show that the temperaturesensitive period for developing compound eye cells is from the late second instar up to the early pupa. Cytodifferentiation of compound eye cells is blocked by restrictive temperature treatment during this period, whereas cell proliferation does not seem to be directly affected. These results are discussed with regard to the other known aspects of the phenotype observed in mutant individuals. |
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Keywords: | Drosophila Compound eye shibire
ts Development |
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