期刊
DEVELOPMENT
卷 146, 期 5, 页码 -出版社
COMPANY BIOLOGISTS LTD
DOI: 10.1242/dev.151894
关键词
Brassinosteroid; Growth; Root; Stem cell; Stress
资金
- Severo Ochoa Programme for Centers of Excellence in R&D 2016-2019 from the Ministerio de Ciencia e Innovacion [SEV-2015-0533]
- Ministerio de Educacion, Cultura y Deporte [FPU15/02822]
- Agencia de Gestio d'Ajuts Universitaris i de Recerca, Generalitat de Catalunya [FI-DGR 2016FI_B 00472]
- Ministerio de Economia y Competitividad (Spain)
- FEDER (European Regional Development Fund of the European Union) [FIS2015-66503-C3-3-P]
- Generalitat de Catalunya through Grup de Recerca Consolidat [2017 SGR 1061]
- Ministerio de Economi'a y Competitividad [BIO2013-43873]
- ERC Consolidator Grant from the European Research Council [ERC-2015-CoG - 683163]
Brassinosteroids (BRs) are steroid hormones that are essential for plant growth and development. These hormones control the division, elongation and differentiation of various cell types throughout the entire plant life cycle. Our current understanding of the BR signaling pathway has mostly been obtained from studies using Arabidopsis thaliana as a model. In this context, the membrane steroid receptor BRI1 (BRASSINOSTEROID INSENSITIVE 1) binds directly to the BR ligand, triggering a signal cascade in the cytoplasm that leads to the transcription of BR-responsive genes that drive cellular growth. However, recent studies of the primary root have revealed distinct BR signaling pathways in different cell types and have highlighted cell-specific roles for BR signaling in controlling adaptation to stress. In this Review, we summarize our current knowledge of the spatiotemporal control of BR action in plant growth and development, focusing on BR functions in primary root development and growth, in stem cell selfrenewal and death, and in plant adaption to environmental stress.
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