Key messageBrassinosteroids have important roles in plant development. This review focuses on the agronomic traits regulated by brassinosteroids in rice.AbstractBrassinosteroids (BRs) are a group of steroid phytohormones with wide-ranging biological activity. Genetic, genomic and proteomic studies have greatly advanced our understanding of BR signaling in Arabidopsis and revealed a connected signal transduction pathway from the cell surface receptor kinase BRASSINOSTEROID-INSENSITIVE1 (BRI1) and BRI1-ASSOCIATED RECEPTOR KINASE 1 (BAK1) to the BRASSINAZOLE-RESISTANT1 (BZR1) family of transcription factors and their targets mediating physiological functions. However, compared with the dicot model plant Arabidopsis, much less is known about BR signaling in rice, which is a monocot. In this review, we provide an update on the progress made by BR studies in rice and discuss how BR regulates various important agronomic traits to determine rice grain yield. Specifically, we discuss the function of novel components including LEAF AND TILLER ANGLE INCREASED CONTROLLER (LIC), DWARF and LOW-TILLERING (DLT), DWARF1 (D1) and TAIHU DWARF1 (TUD1) in rice BR signaling, and provide a rice BR-signaling pathway model that involves a BRI1-dependent pathway as well as a G-protein α subunit-mediated signaling pathway. The recent significant advances in our understanding of BR-mediated molecular mechanisms underlying agronomic traits will be of great help for rice molecular breeding.
Brassinosteroid-mediated regulation of agronomic traits in rice
Cui Zhang,Ming-Yi Bai,K. Chong
Published 2014 in Plant Cell Reports
ABSTRACT
PUBLICATION RECORD
- Publication year
2014
- Venue
Plant Cell Reports
- Publication date
2014-03-26
- Fields of study
Agricultural and Food Sciences, Medicine, Biology
- Identifiers
- External record
- Source metadata
Semantic Scholar, PubMed
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