Journal
TRENDS IN PLANT SCIENCE
Volume 20, Issue 1, Pages 12-19Publisher
ELSEVIER SCIENCE LONDON
DOI: 10.1016/j.tplants.2014.09.003
Keywords
immunity; growth; trade-off; BZR1; transcriptional regulation; crosstalk
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Funding
- Gatsby Charitable Foundation
- European Research Council
- UK Biotechnology and Biological Sciences Research Council
- Two Blades Foundation
- Fundacion Ramon Areces
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A balance between growth and immunity exists in plants. Recently, the growth-promoting hormones brassinosteroids (BR) have emerged as crucial regulators of the growth-immunity trade-off, although the molecular mechanisms underlying this role remained unclear. New evidence obtained from the model plant Arabidopsis thaliana points at an indirect crosstalk between BR signaling and immunity, mediated by the transcription factors BZR1 and HBI1, which suppress immunity upon BR perception. The core transcriptional cascade formed by BZR1 and HBI1 seems to act as a regulatory hub on which multiple signaling inputs impinge, ensuring effective fine-tuning of the trade-off between growth and immunity in a timely and cost-efficient manner.
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