Transcription factors that activates genes required for endodermal differentiation but represses genes involved in proliferative divisions, thus regulating the transition from proliferation to differentiation in root endodermis (PubMed:26371322). Required for Casparian strip formation by positively regulating the expression of the Casparian strip genes CASP1, PER64 and ESB1 and other endodermis-specific genes, thus triggering correct localized lignin biosynthesis in root endodermis and subsequently regulating global ion homeostasis (PubMed:26124109, PubMed:26371322). Expressed in leaves, roots (endodermis-specific) and seedlings. In roots, expressed in endodermal cells from the late elongation zones to the differentiation zone and, to a lower extent, in endodermal cells of the meristematic zone. Directly up-regulated by SCARECROW (SCR), as part of the differentiation program controlled by SHORT-ROOT (SHR). In myb36-1, myb36-2 and myb36-4, impaired Casparian strips formation replaced by ectopic lignin-like material in the corners of endodermal cells, associated with reduced expression of several endodermis-specific genes and abnormal CASP1 localization in the plasma membrane (PubMed:26124109, PubMed:26371322). Multiple changes to leaf ionome, including elevated concentrations of sodium, magnesium, and zinc and decreased calcium, manganese, and iron. Longer root hairs (PubMed:26124109). Delayed and defective barrier (Casparian strips) formation as well as extra cell divisions in the meristem in roots (PubMed:26371322).