Plant height is one of the important agronomic traits of rice(Oryza sativa L.).Researches showed that semi-dwarfing is beneficial to the lodging resistance and high yield properties,and is associated with the mutation of gibberellin acids(GA)synthetic gene SD1.Therefore,it's speculated that phytohormone is a vital factor to reg-ulate plant height,and it is important to clarify the anabolic pathways and signal transduction pathways of hor-mones in plant.This study reviewed the anabolic pathway and signal transduction pathways of three major phyto-hormones(GAs,ABA and BRs)in rice and the recent progress of these hormones in regulating rice plant height,which would provide new information and clues for rice improvement.
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