Novel border-like cells in woody plant roots

Novel border-like cells in woody plant roots

Root border cells play a critical role in root growth and microbial association, although their detachment patterns are divergent among plant species. Endo et al. describe a detailed pattern of synthesis, separation and survival of distinct border-like cells that form a sheath surrounding the root apex of a tree, Acacia mangium. The cells bilaterally peel from the entire root apex, mainly in a region 1–3 mm behind the tip and may play a role in the protection of root elongation from adverse growth conditions.