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An Automated Method to Determine the Performance of Drosophila in Response to Temperature Changes in Space and Time

An Automated Method to Determine the Performance of Drosophila in Response to Temperature Changes in Space and Time

Published on: October 12, 2018

Dynamic hyper-editing underlies temperature adaptation in Drosophila.

Ilana Buchumenski¹, Osnat Bartok², Reut Ashwal-Fluss²

¹The Mina and Everard Goodman Faculty of Life Sciences, Bar Ilan University, Ramat Gan, Israel.

|July 27, 2017

Summary

Adenosine-to-inosine (A-to-I) editing enzyme ADAR is crucial for Drosophila temperature adaptation. ADAR regulates RNA secondary structures, ensuring fly survival in changing environments.

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Area of Science:

Molecular Biology
Neuroscience
Genetics

Background:

Adenosine-to-inosine (A-to-I) RNA editing, mediated by the ADAR enzyme, is widespread in the Drosophila brain.
Mutations in ADAR are linked to specific behavioral deficits in flies.

Purpose of the Study:

To investigate the role of ADAR in behavioral temperature adaptation in Drosophila.
To characterize the properties of A-to-I edited sites under different temperature conditions.

Main Methods:

Analysis of A-to-I editing levels and site characteristics at varying temperatures.
Phenotypic analysis of ADAR hypomorph mutants under temperature stress.
Assessment of transcriptional responses to temperature changes in wild-type and mutant flies.

Main Results:

ADAR activity increases at higher temperatures (29°C), with more sites being edited.
These temperature-dependent edited sites are less conserved, more dispersed, and preferentially located in exons.
ADAR hypomorph mutants exhibit impaired transcriptional and behavioral responses to temperature increases.

Conclusions:

ADAR is essential for Drosophila's ability to adapt its behavior to temperature fluctuations, a critical survival trait.
The findings suggest a broader role for ADAR in regulating RNA secondary structures within living organisms.