Root cap angle and gravitropic response rate are uncoupled in the Arabidopsis pgm-1 mutant

• Published in: Physiologia plantarum Vol. 141; no. 4; pp. 373 - 382
• Main Authors: Wolverton, Chris, Paya, Alex M, Toska, Jonida
• Format: Journal Article
• Language: English
• Published: Oxford, UK Blackwell Publishing Ltd 01.04.2011; Blackwell
• Subjects: Arabidopsis - anatomy & histology; Arabidopsis - growth & development; Arabidopsis - physiology; Arabidopsis Proteins - genetics; Arabidopsis Proteins - metabolism; Biological and medical sciences; Feedback, Physiological; Fundamental and applied biological sciences. Psychology; Gravitropism - physiology; Green Fluorescent Proteins - metabolism; Kinetics; Microscopy, Confocal; Movements; Mutation - genetics; Plant physiology and development; Plant Root Cap - anatomy & histology; Plant Root Cap - physiology; Plant Roots - growth & development; Plant Roots - physiology; Recombinant Fusion Proteins - metabolism; Arabidopsis thaliana; Response; Root; Plant physiology; Cruciferae; Dicotyledones; Angiospermae; Gravitropism; Spermatophyta; Mutation; Experimental plant

The sedimentation of starch-filled plastids is thought to be the primary mechanism by which gravity is perceived in roots. Following gravity perception, auxin redistribution toward the lower flank of roots, initiated in the root cap, is believed to play a role in regulation of the gravity response....