Actin-dependent plastid movement is required for motive force generation in directional nuclear movement in plants.

ABSTRACT: Nuclear movement and positioning are indispensable for most cellular functions. In plants, strong light-induced chloroplast movement to the side walls of the cell is essential for minimizing damage from strong visible light. Strong light-induced nuclear movement to the side walls also has been suggested to play an important role in minimizing damage from strong UV light. Although both movements are regulated by the same photoreceptor, phototropin, the precise cytoskeleton-based force generation mechanism for nuclear movement is unknown, in contrast to the short actin-based mechanism of chloroplast movement. Here we show that actin-dependent movement of plastids attached to the nucleus is essential for light-induced nuclear movement in the Arabidopsis leaf epidermal cell. We found that nucl

SUBMITTER: Higa T 

PROVIDER: S-EPMC3964046 | biostudies-literature | 2014 Mar

REPOSITORIES: biostudies-literature