Fig 6. A model for strong-blue-light-induced avoidance response.

In wild type, phot2 (and also phot1) perceive strong blue light and mediates cp-actin-filament-mediated avoidance response in CHUP1- and KAC-dependent manners. At least in kac1kac2 mutant plants, light-induced chloroplast movement is induced in actin-filament- and CHUP1-dependent manners (but cp-actin-filament-independent). PMI1 and THRUM1 regulate both cp-actin-dependent or–independent responses, but the relationship between these proteins, CHUP1, and KAC is unclear.