Experimental evolution of post-ingestive nutritional compensation in response to a nutrient-poor diet.

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State: Public
Version: author
License: CC BY 4.0
Serval ID
serval:BIB_3126ADBA08AB
Type
Article: article from journal or magazin.
Collection
Publications
Institution
Title
Experimental evolution of post-ingestive nutritional compensation in response to a nutrient-poor diet.
Journal
Proceedings. Biological sciences
Author(s)
Cavigliasso F., Dupuis C., Savary L., Spangenberg J.E., Kawecki T.J.
ISSN
1471-2954 (Electronic)
ISSN-L
0962-8452
Publication state
Published
Issued date
09/12/2020
Peer-reviewed
Oui
Volume
287
Number
1940
Pages
20202684
Language
english
Notes
Publication types: Journal Article
Publication Status: ppublish
Abstract
The geometric framework of nutrition predicts that populations restricted to a single imbalanced diet should evolve post-ingestive nutritional compensation mechanisms bringing the blend of assimilated nutrients closer to physiological optimum. The evolution of such nutritional compensation is thought to be mainly driven by the ratios of major nutrients rather than overall nutritional content of the diet. We report experimental evolution of divergence in post-ingestive nutritional compensation in populations of Drosophila melanogaster adapted to diets that contained identical imbalanced nutrient ratios but differed in total nutrient concentration. Larvae from 'Selected' populations maintained for over 200 generations on a nutrient-poor diet with a 1 : 13.5 protein : carbohydrate ratio showed enhanced assimilation of nitrogen from yeasts and reduced assimilation of carbon from sucrose than 'Control' populations evolved on a diet with the same nutrient ratio but fourfold greater nutrient concentration. Compared to the Controls, the Selected larvae also accumulated less triglycerides relative to protein. This implies that the Selected populations evolved a higher assimilation rate of amino acids from the poor imbalanced diet and a lower assimilation of carbohydrates than Controls. Thus, the evolution of nutritional compensation may be driven by changes in total nutrient abundance, even if the ratios of different nutrients remain unchanged.
Keywords
Drosophila, geometric framework for nutrition, limiting nutrient, malnutrition, nutrient assimilation, unbalanced diet
Pubmed
Open Access
Yes
Funding(s)
Swiss National Science Foundation / Projects / 31003A_162732
Create date
07/12/2020 14:14
Last modification date
23/12/2020 6:24
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