THE ROLE OF 20-HYDROXYECDYSONE IN THE CONTROL OF CARBOHYDRATE LEVELS IN DROSOPHILA MELANOGASTER UNDER SHORT-TERM HEAT STRESS

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Abstract

It is known that 20-hydroxyecdysone is one of the most important hormonal regulators of development, reproduction and adaptation to unfavourable conditions in insects. Here, we show for the first time that exogenous 20-hydroxyecdysone increases the content of two main insect carbohydrates, trehalose and glucose, in Drosophila melanogaster females both in normal conditions and under short-term heat stress. It has been found that the levels of both trehalose and glucose increase after thirty minutes of heat exposure, and return to their original levels after an hour and a half. A scheme of hormonal regulation of carbohydrate content under heat stress, involving 20-hydroxyecdysone, juvenile hormone and dopamine, is suggested.

About the authors

M. A. Bobrovskikh

Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences

Email: nataly@bionet.nsc.ru
Russian Federation, Novosibirsk

N. E. Gruntenko

Institute of Cytology and Genetics, Siberian Branch of Russian Academy of Sciences

Author for correspondence.
Email: nataly@bionet.nsc.ru
Russian Federation, Novosibirsk

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