Wounding-induced changes in cellular pressure and localized auxin signalling spatially coordinate restorative divisions in roots.

ABSTRACT: Wound healing in plant tissues, consisting of rigid cell wall-encapsulated cells, represents a considerable challenge and occurs through largely unknown mechanisms distinct from those in animals. Owing to their inability to migrate, plant cells rely on targeted cell division and expansion to regenerate wounds. Strict coordination of these wound-induced responses is essential to ensure efficient, spatially restricted wound healing. Single-cell tracking by live imaging allowed us to gain mechanistic insight into the wound perception and coordination of wound responses after laser-based wounding in Arabidopsis root. We revealed a crucial contribution of the collapse of damaged cells in wound perception and detected an auxin increase specific to cells immediately adjacent to the wound.

SUBMITTER: Hoermayer L 

PROVIDER: S-EPMC7334516 | biostudies-literature | 2020 Jun

REPOSITORIES: biostudies-literature