A two-way molecular dialogue between embryo and endosperm is required for seed development.

Détails

ID Serval
serval:BIB_58F71EA409F1
Type
Article: article d'un périodique ou d'un magazine.
Collection
Publications
Institution
Titre
A two-way molecular dialogue between embryo and endosperm is required for seed development.
Périodique
Science
Auteur⸱e⸱s
Doll N.M., Royek S., Fujita S., Okuda S., Chamot S., Stintzi A., Widiez T., Hothorn M., Schaller A., Geldner N., Ingram G.
ISSN
1095-9203 (Electronic)
ISSN-L
0036-8075
Statut éditorial
Publié
Date de publication
24/01/2020
Peer-reviewed
Oui
Volume
367
Numéro
6476
Pages
431-435
Langue
anglais
Notes
Publication types: Journal Article ; Research Support, Non-U.S. Gov't
Publication Status: ppublish
Résumé
The plant embryonic cuticle is a hydrophobic barrier deposited de novo by the embryo during seed development. At germination, it protects the seedling from water loss and is, thus, critical for survival. Embryonic cuticle formation is controlled by a signaling pathway involving the ABNORMAL LEAF SHAPE1 subtilase and the two GASSHO receptor-like kinases. We show that a sulfated peptide, TWISTED SEED1 (TWS1), acts as a GASSHO ligand. Cuticle surveillance depends on the action of the subtilase, which, unlike the TWS1 precursor and the GASSHO receptors, is not produced in the embryo but in the neighboring endosperm. Subtilase-mediated processing of the embryo-derived TWS1 precursor releases the active peptide, triggering GASSHO-dependent cuticle reinforcement in the embryo. Thus, a bidirectional molecular dialogue between embryo and endosperm safeguards cuticle integrity before germination.
Mots-clé
Amino Acid Sequence, Endosperm/cytology, Endosperm/metabolism, Endosperm/physiology, Germination, Ligands, Plant Proteins/chemistry, Plant Proteins/metabolism, Protein Kinases/chemistry, Protein Kinases/metabolism, Seeds/cytology, Seeds/metabolism, Seeds/physiology, Serine Endopeptidases/chemistry, Serine Endopeptidases/metabolism, Signal Transduction, Tobacco/growth & development, Tobacco/metabolism
Pubmed
Web of science
Création de la notice
29/01/2020 16:39
Dernière modification de la notice
20/01/2021 6:26
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