MYC2, a bHLH transcription factor, modulates the adult phenotype of SPA1

MYC2 and SPA1 are two key regulatory proteins that negatively regulate light-controlled Arabidopsis seedling development. 1,2 We have recently demonstrated the genetic and molecular relationships of MYC2 and SPA1 in light and JA (jasmonic acid) signaling pathways. 3 Here, we have further shown the genetic interactions between these two proteins in flowering time and lateral root development.