Auxin-mediated stress relaxation in pericycle and endoderm remodeling drives lateral root initiation.

ABSTRACT: Plant development relies on the precise coordination of cell growth, which is influenced by the mechanical constraints imposed by rigid cell walls. The hormone auxin plays a crucial role in regulating this growth by altering the mechanical properties of cell walls. During the postembryonic formation of lateral roots, pericycle cells deep within the main root are triggered by auxin to resume growth and divide to form a new root. This growth involves a complex interplay between auxin, growth, and the resolution of mechanical conflicts with the overlying endodermis. However, the exact mechanisms by which this coordination is achieved are still unknown. Here, we propose a model that integrates tissue mechanics and auxin transport, revealing a connection between the auxin-induced relaxation of

SUBMITTER: Ramos JRD 

PROVIDER: S-EPMC11947471 | biostudies-literature | 2025 Mar

REPOSITORIES: biostudies-literature