Trinh C.D. auteur aut IRD Laplaze Laurent auteur aut IRD Guyomarc'h S. auteur aut IRD text journalArticle eng text/pdf born digital access The complex and adaptable architecture of the plant root system in soil is of paramount importance for crop growth and performance. Root growth depends on the activity of the root apical meristem, an organised population of proliferating progenitor cells continuously replenished from a stem cell niche. Root branching, which greatly contributes to root system architecture in most dicot species, consists of de novo formation of new root meristems in existing root tissues. This phenomenon illustrates the ability of plants to repeatedly generate new tissues specialised in post-embryonic continuous growth and greatly impacts the elaboration of the root system architecture and its adaptation to environmental constraints. Here, we review the recent findings and models related to lateral root organogenesis in the dicot species Arabidopsis thaliana, with emphasis on the mechanisms controlling de novo root meristem formation. Experimental evidence suggests that critical regulatory modules are common between embryonic and post-embryonic root meristem organogenesis and that the lateral root formation molecular pathway is in part common with organ regeneration from callus. specialized 076PHYBIO 1 3 44 2018 2639-3832 https://www.documentation.ird.fr/hor/fdi:010087048 10.1002/9781119312994.apr0650 2639-3832 [F B010087048] https://www.documentation.ird.fr/hor/fdi:010087048 https://www.documentation.ird.fr/intranet/publi/2023-06/010087048.pdf Accès réservé (Intranet de l'IRD) IRD - Base Horizon / Pleins textes 2022-12-26 2023-07-11 fdi:010087048 fre