Figure 8.

Model of functional roles of SEU and SLK genes in the SAM and CMM. In this model, we propose that the SEU, SLK1, SLK2, and possibly SLK3 genes support the development of organs from the SAM, the floral meristem (FM), and the CMM through two gene regulatory events (right and left sides). SEU and the SLK genes support auxin responses that are required for organ initiation events in the CMM, floral meristem, and embryonic SAM. Additionally, SEU and SLK genes support the maintenance or growth of these meristematic regions by enabling the expression of PHB and STM.