In the dark, many of the transcription factors that regulate photomorphogenesis are degraded in the nucleus via COP1-mediated ubiquitination and the 26S proteasome, while in the light this process is prevented, allowing photomorphogenesis to proceed.
"Plant Physiology and Development" int'l 6e - Taiz, L., Zeiger, E., Møller, I.M., Murphy, A.
















