Figure 2 (IMAGE)
Caption
In KL signaling (A), KAI2 functions as a receptor of an unknown plant hormone called KL. After binding with KL, KAI2 forms a complex with MAX2, an F-box protein, and SMXL, a repressor protein. SMXL is degraded by MAX2, leading to the de-repression of genes that were suppressed by SMXL, resulting in various responses. In KAI2 and MAX2 loss-of-function mutants (B), KL signaling does not occur, and gemma cups are not formed. In SMXL loss-of-function mutants (C), genes suppressed by SMXL are no longer repressed, mimicking KL signaling, and more gemmae are formed.
Credit
Komatsu et al.
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