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PROSTRATE GROWTH 1 (PROG1) encodes a single Cys2-His2 zinc-finger transcription factor. It promotes tiller angle and tiller number in rice. During the domestication of Asian and African rice PROG1 gene was functionally lost and its mutant allele prog1 was selected, thus, the cultivated rice is more compact as compared to its wild ancestor (Dong et al., 2026).PROG1 has been identified as a domestication-related gene with pleiotropic effects on tiller angle, tiller number, grain number, and grain yield (Zhu et at., 2021)
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