Our work presents a new floral meristem regulatory mechanism in which SUP a boundary gene coordinates floral organogenesis and floral meristem size through fine-tuning auxin biosynthesis.
SUPERMAN gene is required for proper specification of the boundary between stamens in whorl 3 and carpels in whorl 4 as superman mutants exhibit supernumerary stamens but usually lack carpels; the extra stamens in superman mutants arise from cells in whorl 4 which change their fate from female to male while floral stem cells proliferate longer allowing for the production of additional stamens
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