Plastid sedimentation kinetics in roots of wild-type and starch-deficient mutants of arabidopsis

From: Plant Physiology | Date: May 1, 1999| Author: | Copyright information

Plastid Sedimentation Kinetics in Roots of Wild-Type and Starch-Deficient Mutants of Arabidopsis'

Sedimentation and movement of plastids in columella cells of the root cap were measured in seedlings of wild-type, a reduced starch mutant, and a starchless mutant of Arabidopsis. To assay for sedimentation, we used both linear measurements and the change of angle from the cell center as indices in vertical and reoriented plants with the aid of computer-assisted image analysis. Seedlings were fixed at short periods after reorientation, and plastid sedimentation correlated with starch content in ...

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