The greenbeard gene tgrB1 regulates altruism and cheating in Dictyostelium discoideum.
Journal
Nature communications
ISSN: 2041-1723
Titre abrégé: Nat Commun
Pays: England
ID NLM: 101528555
Informations de publication
Date de publication:
11 May 2024
11 May 2024
Historique:
received:
23
10
2023
accepted:
25
04
2024
medline:
12
5
2024
pubmed:
12
5
2024
entrez:
11
5
2024
Statut:
epublish
Résumé
Greenbeard genetic elements encode rare perceptible signals, signal recognition ability, and altruism towards others that display the same signal. Putative greenbeards have been described in various organisms but direct evidence for all the properties in one system is scarce. The tgrB1-tgrC1 allorecognition system of Dictyostelium discoideum encodes two polymorphic membrane proteins which protect cells from chimerism-associated perils. During development, TgrC1 functions as a ligand-signal and TgrB1 as its receptor, but evidence for altruism has been indirect. Here, we show that mixing wild-type and activated tgrB1 cells increases wild-type spore production and relegates the mutants to the altruistic stalk, whereas mixing wild-type and tgrB1-null cells increases mutant spore production and wild-type stalk production. The tgrB1-null cells cheat only on partners that carry the same tgrC1-allotype. Therefore, TgrB1 activation confers altruism whereas TgrB1 inactivation causes allotype-specific cheating, supporting the greenbeard concept and providing insight into the relationship between allorecognition, altruism, and exploitation.
Identifiants
pubmed: 38734736
doi: 10.1038/s41467-024-48380-4
pii: 10.1038/s41467-024-48380-4
doi:
Substances chimiques
Protozoan Proteins
0
Membrane Proteins
0
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
3984Informations de copyright
© 2024. The Author(s).
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