To the top

Page Manager: Webmaster
Last update: 9/11/2012 3:13 PM

Tell a friend about this page
Print version

Metabolic and functional … - University of Gothenburg, Sweden Till startsida
Sitemap
To content Read more about how we use cookies on gu.se

Metabolic and functional characterization of effects of developmental temperature in Drosophila melanogaster

Journal article
Authors M. F. Schou
T. N. Kristensen
Anders Pedersen
B Göran Karlsson
V. Loeschcke
A. Malmendal
Published in American Journal of Physiology-Regulatory Integrative and Comparative Physiology
Volume 312
Issue 2
Pages R211-R222
ISSN 0363-6119
Publication year 2017
Published at Swedish NMR Centre at Göteborg University
Pages R211-R222
Language en
Links ajpregu.physiology.org/content/312/...
Http://doi.org/10.1152/ajpregu.0026...
Keywords nuclear magnetic resonance metabolomics, developmental acclimation, environmental stress, extreme temperatures, plastic responses, sexual dimorphism, thermal performance curve, thermal resistance, climate-change, thermal-acclimation, cold tolerance, heat-stress, laboratory population, microarray analysis, folsomia-candida, fruit-fly, expression, responses, Physiology, wsner louis, 1935, physiol zool, v8, p474
Subject categories Clinical Medicine

Abstract

The ability of ectotherms to respond to changes in their thermal environment through plastic mechanisms is central to their adaptive capability. However, we still lack knowledge on the physiological and functional responses by which ectotherms acclimate to temperatures during development, and in particular, how physiological stress at extreme temperatures may counteract beneficial acclimation responses at benign temperatures. We exposed Drosophila melanogaster to 10 developmental temperatures covering their entire permissible temperature range. We obtained metabolic profiles and reaction norms for several functional traits: egg-to-adult viability, developmental time, and heat and cold tolerance. Females were more heat tolerant than males, whereas no sexual dimorphism was found in cold tolerance. A group of metabolites, mainly free amino acids, had linear reaction norms. Several energy-carrying molecules, as well as some sugars, showed distinct inverted U-shaped norms of reaction across the thermal range, resulting in a positive correlation between metabolite intensities and egg-to-adult viability. At extreme temperatures, low levels of these metabolites were interpreted as a response characteristic of costs of homeostatic perturbations. Our results provide novel insights into a range of metabolites reported to be central for the acclimation response and suggest several new candidate metabolites. Low and high temperatures result in different adaptive physiological responses, but they also have commonalities likely to be a result of the failure to compensate for the physiological stress. We suggest that the regulation of metabolites that are tightly connected to the performance curve is important for the ability of ectotherms to cope with variation in temperature.

Page Manager: Webmaster|Last update: 9/11/2012
Share:

The University of Gothenburg uses cookies to provide you with the best possible user experience. By continuing on this website, you approve of our use of cookies.  What are cookies?