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Rice is one of the earliest-domesticated crops, and the plant and panicle architecture are critical domesticated traits that greatly affect yield (Xu and Sun, 2021). Previous studies revealed that PROSTRATE GROWTH 1 (PROG1) regulates tiller angle, tiller number and panicle architecture during rice domestication (Jin et al., 2008; Tan et al., 2008). However, the detailed molecular mechanisms through which PROG1 controls plant and panicle architecture have not yet been well documented. Recently, Wang et al.(2023) identified the direct downstream targets of PROG1 to illustrate the genetic basis of the pleiotropic effects of the gene PROG1 in rice (Wang et al., 2023). During the domestication of cultivated rice from wild rice, inactivation of PROG1 led to the transition from prostrate growth to erect growth, thereby facilitating the harvest (Jin et al., 2008; Tan et al., 2008). In rice, the LAZY1 (LA1) gene regulates tiller …