Figure 6

Pathways regulating the floral transition in Arabidopsis[68, 69]. Long photoperiod and gibberellic acids (GAs) promote the floral transition by activating the floral pathway integrators. The enabling pathways regulate floral competence of the meristems by regulating floral repressor activity such as the FLC. Arrows indicate activation and short lines ending with a dot indicate repression. The data underlying the model and the corresponding homologs in citrus are presented in Table 1. A plus sign (+) indicates up-regulation and a minus sign (-) indicates down-regulation in precocious trifoliate orange. Genes in red type were not found by MPSS.