Large differences in carbohydrate degradation and transport potential among lichen fungal symbionts.
Journal
Nature communications
ISSN: 2041-1723
Titre abrégé: Nat Commun
Pays: England
ID NLM: 101528555
Informations de publication
Date de publication:
12 05 2022
12 05 2022
Historique:
received:
12
09
2021
accepted:
21
04
2022
entrez:
13
5
2022
pubmed:
14
5
2022
medline:
18
5
2022
Statut:
epublish
Résumé
Lichen symbioses are thought to be stabilized by the transfer of fixed carbon from a photosynthesizing symbiont to a fungus. In other fungal symbioses, carbohydrate subsidies correlate with reductions in plant cell wall-degrading enzymes, but whether this is true of lichen fungal symbionts (LFSs) is unknown. Here, we predict genes encoding carbohydrate-active enzymes (CAZymes) and sugar transporters in 46 genomes from the Lecanoromycetes, the largest extant clade of LFSs. All LFSs possess a robust CAZyme arsenal including enzymes acting on cellulose and hemicellulose, confirmed by experimental assays. However, the number of genes and predicted functions of CAZymes vary widely, with some fungal symbionts possessing arsenals on par with well-known saprotrophic fungi. These results suggest that stable fungal association with a phototroph does not in itself result in fungal CAZyme loss, and lends support to long-standing hypotheses that some lichens may augment fixed CO
Identifiants
pubmed: 35551185
doi: 10.1038/s41467-022-30218-6
pii: 10.1038/s41467-022-30218-6
pmc: PMC9098629
doi:
Substances chimiques
Carbon
7440-44-0
Cellulose
9004-34-6
Banques de données
Dryad
['10.5061/dryad.3xsj3txjb']
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
2634Informations de copyright
© 2022. The Author(s).
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