Modulation of abscisic acid signaling via endosomal TOL proteins

Modulation of abscisic acid signaling via endosomal TOL proteins

© 2024 The Authors. New Phytologist © 2024 New Phytologist Foundation.

Bibliographische Detailangaben
Veröffentlicht in:The New phytologist. - 1979. - 243(2024), 3 vom: 01. Juli, Seite 1065-1081
1. Verfasser: Moulinier-Anzola, Jeanette (VerfasserIn)
Weitere Verfasser: Schwihla, Maximilian, Lugsteiner, Rebecca, Leibrock, Nils, Feraru, Mugurel I, Tkachenko, Irma, Luschnig, Christian, Arcalis, Elsa, Feraru, Elena, Lozano-Juste, Jorge, Korbei, Barbara
Format: Online-Aufsatz
Sprache:English
Veröffentlicht: 2024
Zugriff auf das übergeordnete Werk:The New phytologist
Schlagworte:Journal Article ABA receptors ABA signaling pathway ABA transporters ESCRT TOL vacuolar degradation Abscisic Acid 72S9A8J5GW Arabidopsis Proteins Endosomal Sorting Complexes Required for Transport
Beschreibung
Zusammenfassung:© 2024 The Authors. New Phytologist © 2024 New Phytologist Foundation.
The phytohormone abscisic acid (ABA) functions in the control of plant stress responses, particularly in drought stress. A significant mechanism in attenuating and terminating ABA signals involves regulated protein turnover, with certain ABA receptors, despite their main presence in the cytosol and nucleus, subjected to vacuolar degradation via the Endosomal Sorting Complex Required for Transport (ESCRT) machinery. Collectively our findings show that discrete TOM1-LIKE (TOL) proteins, which are functional ESCRT-0 complex substitutes in plants, affect the trafficking for degradation of core components of the ABA signaling and transport machinery. TOL2,3,5 and 6 modulate ABA signaling where they function additively in degradation of ubiquitinated ABA receptors and transporters. TOLs colocalize with their cargo in different endocytic compartments in the root epidermis and in guard cells of stomata, where they potentially function in ABA-controlled stomatal aperture. Although the tol2/3/5/6 quadruple mutant plant line is significantly more drought-tolerant and has a higher ABA sensitivity than control plant lines, it has no obvious growth or development phenotype under standard conditions, making the TOL genes ideal candidates for engineering to improved plant performance
Beschreibung:Date Completed 04.07.2024
Date Revised 04.07.2024
published: Print-Electronic
Citation Status MEDLINE
ISSN:1469-8137
DOI:10.1111/nph.19904