Seed coat-derived brassinosteroid signaling regulates endosperm development.
Journal
Nature communications
ISSN: 2041-1723
Titre abrégé: Nat Commun
Pays: England
ID NLM: 101528555
Informations de publication
Date de publication:
29 Oct 2024
29 Oct 2024
Historique:
received:
13
12
2023
accepted:
16
10
2024
medline:
30
10
2024
pubmed:
30
10
2024
entrez:
30
10
2024
Statut:
epublish
Résumé
An angiosperm seed is formed by the embryo and endosperm, which are direct products of fertilization, and by the maternal seed coat. These tissues communicate with each other to ensure synchronized seed development. After fertilization, auxin produced in the endosperm is exported to the integuments where it drives seed coat formation. Here, we show that the seed coat signals back to the endosperm to promote its proliferation via the steroid hormones brassinosteroids (BR). We show that BR regulate cell wall-related processes in the seed coat and that the biophysical properties of this maternal organ determine the proliferation rate of the endosperm in a manner independent of the timing of its cellularization. We thus propose that maternal BR signaling tunes endosperm proliferation to seed coat expansion.
Identifiants
pubmed: 39472566
doi: 10.1038/s41467-024-53671-x
pii: 10.1038/s41467-024-53671-x
doi:
Substances chimiques
Brassinosteroids
0
Arabidopsis Proteins
0
Plant Growth Regulators
0
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
9352Informations de copyright
© 2024. The Author(s).
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