biostudies-literatureFernandez-Marcos MHoward Hughes Medical InstituteGordon and Betty Moore FoundationFundacion Ramon ArecesMinisterio de Economía y CompetitividadNational Institutes of HealthJane Coffin Childs Memorial Fund for Medical ResearchNIGMS NIH HHSNational Science Foundation105-112https://www.ebi.ac.uk/biostudies/studies/S-EPMC5126979biostudies-literatureUnknown213(1)Root branching in plants relies on the de novo formation of lateral roots. These are initiated from founder cells, triggering new formative divisions that generate lateral root primordia (LRP). The LRP size and shape depends on the balance between positive and negative signals that control cell proliferation. The mechanisms controlling proliferation potential of LRP cells remains poorly understood. We found that Arabidopsis thaliana MYB36, which have been previously shown to regulate genes required for Casparian strip formation and the transition from proliferation to differentiation in the primary root, plays a new role in controlling LRP development at later stages. We found that MYB36 is a novel component of LR development at later stages. MYB36 was expressed in the cells surrounding LRThe New phytologistControl of Arabidopsis lateral root primordium boundaries by MYB36.PMC5126979BFU2012-34821BIO2011‐28184‐C02‐01R01‐GM043778CSD2007‐0057CSD2007-0057BFU2012‐34821R01-GM043778IOS-1021619R01 GM043778BIO2011-28184-C02-01IOS‐1021619GBMF3405Benfey PNDesvoyes BLiberman LMDel Pozo JCFernandez-Marcos MGutierrez CManzano CfalseControl of Arabidopsis lateral root primordium boundaries by MYB36.Root branching in plants relies on the de novo formation of lateral roots. These are initiated from founder cells, triggering new formative divisions that generate lateral root primordia (LRP). The LRP size and shape depends on the balance between positive and negative signals that control cell proliferation. The mechanisms controlling proliferation potential of LRP cells remains poorly understood. We found that Arabidopsis thaliana MYB36, which have been previously shown to regulate genes required for Casparian strip formation and the transition from proliferation to differentiation in the primary root, plays a new role in controlling LRP development at later stages. We found that MYB36 is a novel component of LR development at later stages. MYB36 was expressed in the cells surrounding LR2017-01-01T00:00:00Z2017 Jan2026-05-05T11:54:29.835Z2019-03-27T02:30:05ZS-EPMC51269792789164910.1111/nph.14304