Consumption of carotenoids not increased by bacterial infection in brown trout embryos (Salmo trutta).

Details

Ressource 1Download: journal.pone.0198834.pdf (776.21 [Ko])
State: Public
Version: Final published version
Serval ID
serval:BIB_A5E776319088
Type
Article: article from journal or magazin.
Collection
Publications
Title
Consumption of carotenoids not increased by bacterial infection in brown trout embryos (Salmo trutta).
Journal
PloS one
Author(s)
Marques da Cunha L., Wilkins LGE, Menin L., Ortiz D., Vocat-Mottier V., Wedekind C.
ISSN
1932-6203 (Electronic)
ISSN-L
1932-6203
Publication state
Published
Issued date
2018
Peer-reviewed
Oui
Volume
13
Number
6
Pages
e0198834
Language
english
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: epublish
Abstract
Carotenoids are organic pigment molecules that play important roles in signalling, control of oxidative stress, and immunity. Fish allocate carotenoids to their eggs, which gives them the typical yellow to red colouration and supports their resistance against microbial infections. However, it is still unclear whether carotenoids act mainly as a shield against infection or are used up during the embryos' immune defence. We investigated this question with experimental families produced from wild-caught brown trout (Salmo trutta). Singly raised embryos were either exposed to the bacterial pathogen Pseudomonas fluorescens or sham-treated at one of two stages during their development. A previous study on these experimental families reported positive effects of egg carotenoids on embryo growth and resistance against the infection. Here, we quantified carotenoid consumption, i.e. the active metabolization of carotenoids into compounds that are not other carotenoid types, in these infected and sham-infected maternal sib groups. We found that carotenoid contents mostly decreased during embryogenesis. However, these decreases were neither linked to the virulence induced by the pathogen nor dependent on the time point of infection. We conclude that egg carotenoids are not significantly used up by the embryos' immune defence.
Keywords
Animals, Carotenoids/analysis, Carotenoids/metabolism, Embryo, Nonmammalian/metabolism, Embryo, Nonmammalian/microbiology, Embryonic Development, Female, Lutein/analysis, Male, Pseudomonas fluorescens/pathogenicity, Trout/growth & development, Trout/metabolism, Xanthophylls/analysis, Zeaxanthins/analysis
Pubmed
Web of science
Open Access
Yes
Create date
25/06/2018 9:39
Last modification date
20/08/2019 16:11
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