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Sci. Signal., 28 September 2010
Vol. 3, Issue 141, p. ra69
[DOI: 10.1126/scisignal.2001140]

RESEARCH ARTICLES

Editor's Summary

Integrating Stress and Growth
Brassinosteroids (BRs) are plant hormones that control various aspects of plant growth and development. BR signaling has also been implicated in plants’ ability to tolerate environmental stresses. Regulated intramembrane proteolysis (RIP) that occurs in the Golgi liberates membrane-bound transcription factors in response to various forms of cellular stress, such as endoplasmic reticulum (ER) stress, heat, and salt stress. Che et al. identified two transcription factors, bZIP17 and bZIP28, that were cleaved through endomembrane RIP and activated by heat and ER stress to mediate tolerance to stress. This RIP pathway enhanced BR signaling, suggesting a mechanism by which plants may optimize growth during challenging environmental conditions.

Citation: P. Che, J. D. Bussell, W. Zhou, G. M. Estavillo, B. J. Pogson, S. M. Smith, Signaling from the Endoplasmic Reticulum Activates Brassinosteroid Signaling and Promotes Acclimation to Stress in Arabidopsis. Sci. Signal. 3, ra69 (2010).

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