Photosynthesis from stolen chloroplasts can support sea slug reproductive fitness - INRAE - Institut national de recherche pour l’agriculture, l’alimentation et l’environnement Access content directly
Journal Articles Proceedings of the Royal Society B: Biological Sciences Year : 2021

Photosynthesis from stolen chloroplasts can support sea slug reproductive fitness

Paulo Cartaxana
Bruno Jesus
Ricardo Calado
Sónia Cruz

Abstract

Some sea slugs are able to steal functional chloroplasts (kleptoplasts) from their algal food sources, but the role and relevance of photosynthesis to the animal host remain controversial. While some researchers claim that kleptoplasts are slowly digestible ‘snacks’, others advocate that they enhance the overall fitness of sea slugs much more profoundly. Our analysis shows light-dependent incorporation of 13 C and 15 N in the albumen gland and gonadal follicles of the sea slug Elysia timida , representing translocation of photosynthates to kleptoplast-free reproductive organs. Long-chain polyunsaturated fatty acids with reported roles in reproduction were produced in the sea slug cells using labelled precursors translocated from the kleptoplasts. Finally, we report reduced fecundity of E. timida by limiting kleptoplast photosynthesis. The present study indicates that photosynthesis enhances the reproductive fitness of kleptoplast-bearing sea slugs, confirming the biological relevance of this remarkable association between a metazoan and an algal-derived organelle.
Fichier principal
Vignette du fichier
rspb.2021.1779.pdf (2.27 Mo) Télécharger le fichier
Origin : Publisher files allowed on an open archive

Dates and versions

hal-03636786 , version 1 (18-01-2024)

Licence

Attribution

Identifiers

Cite

Paulo Cartaxana, Felisa Rey, Charlotte Lekieffre, Diana Lopes, Cédric Hubas, et al.. Photosynthesis from stolen chloroplasts can support sea slug reproductive fitness. Proceedings of the Royal Society B: Biological Sciences, 2021, 288 (1959), ⟨10.1098/rspb.2021.1779⟩. ⟨hal-03636786⟩
60 View
6 Download

Altmetric

Share

Gmail Facebook X LinkedIn More