Variations in chloroplast movement and chlorophyll fluorescence among chloroplast division mutants under light stress.

ABSTRACT: Chloroplasts divide to maintain consistent size, shape, and number in leaf mesophyll cells. Altered expression of chloroplast division proteins in Arabidopsis results in abnormal chloroplast morphology. To better understand the influence of chloroplast morphology on chloroplast movement and photosynthesis, we compared the chloroplast photorelocation and photosynthetic responses of a series of Arabidopsis chloroplast division mutants with a wide variety of chloroplast phenotypes. Chloroplast movement was monitored by red light reflectance imaging of whole plants under increasing intensities of white light. The accumulation and avoidance responses were differentially affected in different mutants and depended on both chloroplast number and morphological heterogeneity. Chlorophyll fluorescenc

SUBMITTER: Dutta S 

PROVIDER: S-EPMC5853797 | biostudies-literature | 2017 Jun

REPOSITORIES: biostudies-literature