The homeostasis of AtMYB4 is maintained by ARA4, HY5, and CAM7 during Arabidopsis seedling development.

Calmodulin7 (CAM7) is a key transcription factor of Arabidopsis seedling development. CAM7 works together with HY5 bZIP protein to promote photomorphogenesis at various wavelengths of light. In this study, we show that AtMYB4, identified from a yeast two-hybrid screen, physically interacts with CAM7 and works as a positive regulator of photomorphogenesis at various wavelengths of light.

MKKK20 works as an upstream triple-kinase of MKK3-MPK6-MYC2 module in Arabidopsis seedling development.

The mitogen-activated protein kinase (MAPK) cascade is involved in several signal transduction processes in eukaryotes. Here, we report a mechanistic function of MAP kinase kinase kinase 20 (MKKK20) in light signal transduction pathways. We show that MKKK20 acts as a negative regulator of photomorphogenic growth at various wavelengths of light.

Calmodulin7: recent insights into emerging roles in plant development and stress.

Analyses of the function of Arabidopsis Calmodulin7 (CAM7) in concert with multiple regulatory proteins involved in various signal transduction processes. Calmodulin (CaM) plays various regulatory roles in multiple signaling pathways in eukaryotes. Arabidopsis CALMODULIN 7 (CAM7) is a unique member of the CAM family that works as a transcription factor in light signaling pathways.