BR是一种重要的甾醇类植物激素,参与调控植物生长发育的各个方面,包括调控植物的株型、细胞的分裂、细胞的伸长、维管束的分化、光形态的建成以及响应各种生物和非生物胁迫。BR信号元件及信号转导通路在双子叶模式植物拟南芥中已被研究的较为清楚,而在单子叶模式植物水稻中研究的相对较少,水稻BR信号元件及调控网络有待挖掘和阐明。 BR is an important steroid hormone involved in the regulation of plant growth and development in all its aspects, including the regulation of plant type, cell division, cell elongation, vascular bundle differentiation, the formation of light patterns and respond to a variety of organisms And abiotic stress. BR signaling elements and signal transduction pathways have been studied in the dicotyledonous plant Arabidopsis. However, relatively few BR signaling elements and regulatory networks in monocotyledonous plant rice have yet to be excavated and elucidated.