SNF1-RELATED KINASE 1 and TARGET OF RAPAMYCIN control light-responsive splicing events and developmental characteristics in etiolated Arabidopsis seedlings.
Journal
The Plant cell
ISSN: 1532-298X
Titre abrégé: Plant Cell
Pays: England
ID NLM: 9208688
Informations de publication
Date de publication:
01 09 2023
01 09 2023
Historique:
received:
17
01
2023
accepted:
12
06
2023
pmc-release:
20
06
2024
medline:
4
9
2023
pubmed:
20
6
2023
entrez:
20
6
2023
Statut:
ppublish
Résumé
The kinases SNF1-RELATED KINASE 1 (SnRK1) and TARGET OF RAPAMYCIN (TOR) are central sensors of the energy status, linking this information via diverse regulatory mechanisms to plant development and stress responses. Despite the well-studied functions of SnRK1 and TOR under conditions of limited or ample energy availability, respectively, little is known about the extent to which the 2 sensor systems function and how they are integrated in the same molecular process or physiological context. Here, we demonstrate that both SnRK1 and TOR are required for proper skotomorphogenesis in etiolated Arabidopsis (Arabidopsis thaliana) seedlings, light-induced cotyledon opening, and regular development in light. Furthermore, we identify SnRK1 and TOR as signaling components acting upstream of light- and sugar-regulated alternative splicing events, expanding the known action spectra for these 2 key players in energy signaling. Our findings imply that concurring SnRK1 and TOR activities are required throughout various phases of plant development. Based on the current knowledge and our findings, we hypothesize that turning points in the activities of these sensor kinases, as expected to occur upon illumination of etiolated seedlings, instead of signaling thresholds reflecting the nutritional status may modulate developmental programs in response to altered energy availability.
Identifiants
pubmed: 37338062
pii: 7203678
doi: 10.1093/plcell/koad168
pmc: PMC10473197
doi:
Substances chimiques
SNF1-related protein kinases
EC 2.7.1.-
Arabidopsis Proteins
0
Sirolimus
W36ZG6FT64
SnRK1 protein, Arabidopsis
EC 2.7.11.1
Protein Serine-Threonine Kinases
EC 2.7.11.1
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
3413-3428Commentaires et corrections
Type : CommentIn
Informations de copyright
© American Society of Plant Biologists 2023. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com.
Déclaration de conflit d'intérêts
Conflict of interest statement. None declared.
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