The cold-induced switch in direction of chloroplast relocation occurs independently of changes in endogenous phototropin levels.

ABSTRACT: When exposed to fluctuating light intensity, chloroplasts move towards weak light (accumulation response), and away from strong light (avoidance response). In addition, cold treatment (5°C) induces the avoidance response even under weak-light conditions (cold-avoidance response). These three responses are mediated by the phototropin (phot), which is a blue-light photoreceptor and has also been reported to act as a thermosensory protein that perceives temperature variation. Our previous report indicated that cold-induced changes in phot biochemical activity initiate the cold-avoidance response. In this study, we further explored the induction mechanism of the cold-avoidance response in the liverwort Marchantia polymorpha and examined the relationship between changes in the amount of phot an

SUBMITTER: Fujii Y 

PROVIDER: S-EPMC7241815 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature