Centre for Research in Agricultural Genomics, Campus UAB Bellaterra 08193, Barcelona, Spain.
Trends Plant Sci. 2013 May;18(5):235-6. doi: 10.1016/j.tplants.2013.01.005. Epub 2013 Feb 4.
Two recent studies disclose the interaction between brassinosteroids (BRs) and cell-identity genes in establishing organ boundaries. BR signaling is downregulated by LATERAL ORGAN BOUNDARIES (LOB), whereas active BR signaling prevents LATERAL ORGAN FUSION1 (LOF1) and CUP SHAPED COTYLEDON (CUC) expression in the growing primordia, pointing to cell-specific hormone signaling as part of the mechanisms controlling fate acquisition.
两项最新研究揭示了油菜素内酯（BRs）与细胞身份基因在建立器官边界方面的相互作用。BR 信号受侧生器官边界（LOB）下调，而活性 BR 信号可防止生长原基中侧向器官融合 1 型（LOF1）和杯状子叶（CUC）的表达，表明细胞特异性激素信号是控制命运获得的机制的一部分。
