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. Author manuscript; available in PMC: 2011 Oct 1.
Published in final edited form as: Curr Opin Plant Biol. 2010 Sep 17;13(5):540–547. doi: 10.1016/j.pbi.2010.08.007

Figure 1.

Figure 1

The potential roles of BES1 and BR-related TFs in plant development. (A). In Arabidopsis flowers, BES1 likely binds to the promoters of known anther/pollen regulatory TFs and a female gametophytic receptor-like kinase FERONIA to affect anther/pollen development and pollen discharge, respectively. (B). In Arabidopsis embryos, BIM1 physically and genetically interact with DRN and PVH to regulate cotyledon development while an auxin-dependent MP directly activates the expression of DRN and ATBS1 (encoding an atypical bHLH protein recently implicated in BR signaling [33]) to control embryonic cotyledon and root development, respectively. (C). In Arabidopsis root, auxin induces the BRX expression likely though an ARF and promotes the translocation of BRX from the cell surface to the nucleus where it activates the CPD expression crucial for BR biosynthesis.