Control of Plant Branching by the CUC2/CUC3-DA1-UBP15 Regulatory Module

Abstract

promoter and activate its expression. Further results show that UBP15, which is a direct substrate of DA1 peptidase, represses the initiation of axillary meristems. Genetic analyses support that CUC2/CUC3, DA1, and UBP15 function, at least in part, in a common pathway to regulate the initiation of axillary meristems. Therefore, our findings establish a genetic and molecular framework by which the CUC2/CUC3-DA1-UBP15 regulatory module controls the initiation of axillary meristems, thereby determining plant architecture.

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