Most commonly, the ratio of PSII to PSI is about 1.5:1, but it can change when plants are grown in different light conditions.

TLS Online TPP Program

#Id: 9845

#Unit 6. System Physiology – Plant

cry2 protein is preferentially degraded under blue light, whereas cry1 is much more stable.

TLS Online TPP Program

#Id: 9846

#Unit 6. System Physiology – Plant

cry1, is involved in the setting of the circadian clock in Arabidopsis, whereas cry2 plays a major role in the induction of flowering

TLS Online TPP Program

#Id: 9847

#Unit 6. System Physiology – Plant

cry1 and cry2 are generally found in the nucleus, cry3 is localized to chloroplasts and mitochondria

TLS Online TPP Program

#Id: 9848

#Unit 6. System Physiology – Plant

Blue light stimulates the accumulation of anthocyanin (A) and the inhibition of stem elongation by cryptochrome

TLS Online TPP Program

#Id: 9849

#Unit 6. System Physiology – Plant

TLS Online TPP Program

#Id: 9850

#Unit 6. System Physiology – Plant

In the light, cry1 is activated directly by blue light and indirectly by blue lightinduced phosphorylation. Activated cry1 forms a complex with COP1 and SPA1 via the C-terminal domain, preventing them from degrading protein targets such as HY5