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Signaling from the endoplasmic reticulum activates brassinosteroid signaling and promotes acclimation to stress in Arabidopsis
Citation
Che, P and Bussell, JD and Zhou, W and Estavillo, GM and Pogson, BJ and Smith, SM, Signaling from the endoplasmic reticulum activates brassinosteroid signaling and promotes acclimation to stress in Arabidopsis, Science Signaling, 3, (141) Article ra69. ISSN 1945-0877 (2010) [Refereed Article]
Copyright Statement
© 2015 American Association for the Advancement of Science.
DOI: doi:10.1126/scisignal.2001140
Abstract
The ability to acclimate to stresses enables plants to grow and develop under adverse environmental conditions. Regulated intramembrane proteolysis (RIP) triggered by endoplasmic reticulum (ER) stress mediates some forms of stress signaling. Brassinosteroids (BRs) have been implicated in plant adaptation to stress, but no mechanisms for activation have been discovered. Here, we reveal a connection between ER stress signaling and BR-mediated growth and stress acclimation. Arabidopsis transcription factors bZIP17 and bZIP28 were translocated from the ER through the Golgi, where they were proteolytically cleaved by site 2 protease and released to translocate into the nucleus. Stresses, including heat and inhibition of protein glycosylation, increased translocation of these two bZIPs to the nucleus. These nuclear-localized bZIPs not only activated ER chaperone genes but also activated BR signaling, which was required for stress acclimation and growth. Thus, these bZIPs link ER stress and BR signaling, which may be a mechanism by which plant growth and stress responses can be integrated.
Item Details
Item Type: | Refereed Article |
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Keywords: | signalling, brassinosteroids, arabidopsis thaliana, stress acclimation, endoplasmic reticulum |
Research Division: | Biological Sciences |
Research Group: | Plant biology |
Research Field: | Plant physiology |
Objective Division: | Expanding Knowledge |
Objective Group: | Expanding knowledge |
Objective Field: | Expanding knowledge in the biological sciences |
UTAS Author: | Smith, SM (Professor Steven Smith) |
ID Code: | 101470 |
Year Published: | 2010 |
Web of Science® Times Cited: | 166 |
Deposited By: | Plant Science |
Deposited On: | 2015-06-24 |
Last Modified: | 2019-06-11 |
Downloads: | 0 |
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