The influence of natural variation at the <Emphasis Type="Italic">foraging</Emphasis> gene on thermotolerance in adult <Emphasis Type="Italic">Drosophila</Emphasis> in a narrow temperature range |
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Authors: | Adam Chen Elizabeth F Kramer Lauren Purpura Jennifer L Krill Troy Zars Ken Dawson-Scully |
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Institution: | (1) Department of Biological Sciences, Florida Atlantic University, Boca Raton, FL 33431, USA;(2) Division of Biological Sciences, University of Missouri, Columbia, MO 65211, USA; |
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Abstract: | Poikilothermic organisms such as insects have mechanisms to protect neural function under high temperature stress. Natural
variation at the foraging (for) locus of the fruit fly, Drosophila melanogaster, encoding a cGMP-dependent protein kinase (PKG), influences neural thermotolerance in Drosophila larvae. The current study re-examines thermotolerance of adult flies to account for inconsistencies in the documented role
of for during hyperthermia. We found that adult for
R
(rover) flies with high PKG activity were incapacitated faster under hyperthermic conditions of 39°C compared to their lower PKG
activity counterparts for
s
and for
s2
(sitters), but not at higher temperatures. This indicates that lowered PKG activity promotes tolerance to heat stress, and that the
for gene influences thermotolerance for a narrow range of temperatures in adult flies. |
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Keywords: | |
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