The AtMYB60 transcription factor regulates stomatal opening by modulating oxylipin synthesis in guard cells.
Journal
Scientific reports
ISSN: 2045-2322
Titre abrégé: Sci Rep
Pays: England
ID NLM: 101563288
Informations de publication
Date de publication:
11 01 2022
11 01 2022
Historique:
received:
13
08
2021
accepted:
06
12
2021
entrez:
12
1
2022
pubmed:
13
1
2022
medline:
25
2
2022
Statut:
epublish
Résumé
Stomata are epidermal pores formed by pairs of specialized guard cells, which regulate gas exchanges between the plant and the atmosphere. Modulation of transcription has emerged as an important level of regulation of stomatal activity. The AtMYB60 transcription factor was previously identified as a positive regulator of stomatal opening, although the details of its function remain unknown. Here, we propose a role for AtMYB60 as a negative modulator of oxylipins synthesis in stomata. The atmyb60-1 mutant shows reduced stomatal opening and accumulates increased levels of 12-oxo-phytodienoic acid (12-OPDA), jasmonic acid (JA) and jasmonoyl-L-isoleucine (JA-Ile) in guard cells. We provide evidence that 12-OPDA triggers stomatal closure independently of JA and cooperatively with abscisic acid (ABA) in atmyb60-1. Our study highlights the relevance of oxylipins metabolism in stomatal regulation and indicates AtMYB60 as transcriptional integrator of ABA and oxylipins responses in guard cells.
Identifiants
pubmed: 35017563
doi: 10.1038/s41598-021-04433-y
pii: 10.1038/s41598-021-04433-y
pmc: PMC8752683
doi:
Substances chimiques
Oxylipins
0
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
533Subventions
Organisme : Fondazione Umberto Veronesi
ID : 2019
Organisme : Horizon 2020 Framework Programme
ID : 739582
Informations de copyright
© 2022. The Author(s).
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