Herbivorous turtle ants obtain essential nutrients from a conserved nitrogen-recycling gut microbiome.
Détails
Télécharger: s41467-018-03357-y.pdf (2617.37 [Ko])
Etat: Public
Version: Final published version
Etat: Public
Version: Final published version
ID Serval
serval:BIB_71C25548145E
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
Herbivorous turtle ants obtain essential nutrients from a conserved nitrogen-recycling gut microbiome.
Périodique
Nature communications
ISSN
2041-1723 (Electronic)
ISSN-L
2041-1723
Statut éditorial
Publié
Date de publication
06/03/2018
Peer-reviewed
Oui
Volume
9
Numéro
1
Pages
964
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't ; Research Support, U.S. Gov't, Non-P.H.S.
Publication Status: epublish
Publication Status: epublish
Résumé
Nitrogen acquisition is a major challenge for herbivorous animals, and the repeated origins of herbivory across the ants have raised expectations that nutritional symbionts have shaped their diversification. Direct evidence for N provisioning by internally housed symbionts is rare in animals; among the ants, it has been documented for just one lineage. In this study we dissect functional contributions by bacteria from a conserved, multi-partite gut symbiosis in herbivorous Cephalotes ants through in vivo experiments, metagenomics, and in vitro assays. Gut bacteria recycle urea, and likely uric acid, using recycled N to synthesize essential amino acids that are acquired by hosts in substantial quantities. Specialized core symbionts of 17 studied Cephalotes species encode the pathways directing these activities, and several recycle N in vitro. These findings point to a highly efficient N economy, and a nutritional mutualism preserved for millions of years through the derived behaviors and gut anatomy of Cephalotes ants.
Mots-clé
Amino Acids/metabolism, Ammonia/metabolism, Animals, Ants/microbiology, Ants/physiology, Diet, Gastrointestinal Microbiome/genetics, Geography, Herbivory/physiology, Metagenome, Metagenomics, Nitrogen/metabolism, Nitrogen Fixation/genetics, Nitrogen Isotopes, Symbiosis, Urea/metabolism, Urease/metabolism, Uric Acid/metabolism
Pubmed
Web of science
Open Access
Oui
Création de la notice
08/03/2018 20:55
Dernière modification de la notice
20/08/2019 14:30