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Genetics of esterases inDrosophila. V. Characteristics of the “pupal” esterase inD. virilis

✍ Scribed by I. Y. Rauschenbach; L. B. Golosheikina; L. S. Korochkina; L. I. Korochkin

Publisher
Springer
Year
1977
Tongue
English
Weight
887 KB
Volume
15
Category
Article
ISSN
0006-2928

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✦ Synopsis

From analysis of the properties of the "pupal" esterase (p-esterase) in Drosophila virilis, it is concluded that it is heat stable, its electrophoretic detection depends on culture density, its expression is stage specific, and it is not a variant of esterase 2. It was also demonstrated that p-esterase, like esterase 6, is activated by injections of the juvenile hormone into larvae. Heat treatment of heat-resistant D. virilis stocks led to decreased activities of the juvenile hormone dependent esterases but did not affect those of the heat-sensitive stocks. It is suggested that heat resistance in D. virilis is related to some functional features of the system of modifier genes controlling the phenotypic expression of esterases.

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