Diversification of ergot alkaloids and heritable fungal symbionts in morning glories.
Journal
Communications biology
ISSN: 2399-3642
Titre abrégé: Commun Biol
Pays: England
ID NLM: 101719179
Informations de publication
Date de publication:
06 12 2021
06 12 2021
Historique:
received:
18
06
2021
accepted:
08
11
2021
entrez:
7
12
2021
pubmed:
8
12
2021
medline:
28
12
2021
Statut:
epublish
Résumé
Heritable microorganisms play critical roles in life cycles of many macro-organisms but their prevalence and functional roles are unknown for most plants. Bioactive ergot alkaloids produced by heritable Periglandula fungi occur in some morning glories (Convolvulaceae), similar to ergot alkaloids in grasses infected with related fungi. Ergot alkaloids have been of longstanding interest given their toxic effects, psychoactive properties, and medical applications. Here we show that ergot alkaloids are concentrated in four morning glory clades exhibiting differences in alkaloid profiles and are more prevalent in species with larger seeds than those with smaller seeds. Further, we found a phylogenetically-independent, positive correlation between seed mass and alkaloid concentrations in symbiotic species. Our findings suggest that heritable symbiosis has diversified among particular clades by vertical transmission through seeds combined with host speciation, and that ergot alkaloids are particularly beneficial to species with larger seeds. Our results are consistent with the defensive symbiosis hypothesis where bioactive ergot alkaloids from Periglandula symbionts protect seeds and seedlings from natural enemies, and provide a framework for exploring microbial chemistry in other plant-microbe interactions.
Identifiants
pubmed: 34873267
doi: 10.1038/s42003-021-02870-z
pii: 10.1038/s42003-021-02870-z
pmc: PMC8648897
doi:
Substances chimiques
Ergot Alkaloids
0
Banques de données
figshare
['10.6084/m9.figshare.14749512']
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
1362Informations de copyright
© 2021. The Author(s).
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