title: An ancient transcriptional regulatory module for tip growth has been conserved throughout the vascular plant lineage.
abstract: The root hair development of vascular plants can be divided into 2 major processes, fate determination and hair morphogenesis, and the latter should be governed by the former so as to express the morphogenetic toolkits in a root hair-specific manner. Vascular plants, depending on taxa, show different fate-determining mechanisms for hair cell/non-hair cell fates, which leads to a question whether the downstream mophogenetic regulatory module is diverged accordingly to the upstream fate determiners or not. Our study demonstrates that the module of a transcription factor and a root hair-specific cis-element (RHE) for root hair-specific expression of morphogenetic toolkit genes is conserved in spite of different fate-determing mechanisms.
authors.affiliation: a Department of Biological Sciences , Seoul National University , Seoul , South Korea.
authors.forename: Hyung-Taeg
authors.initials: HT
authors.lastname: Cho
mesh_terms: D017360:Arabidopsis / Q000235:genetics / Q000378:metabolism*; D029681:Arabidopsis Proteins / Q000235:genetics / Q000378:metabolism*; D051792:Basic Helix-Loop-Helix Proteins / Q000235:genetics / Q000378:metabolism; D018506:Gene Expression Regulation, Plant / Q000235:genetics / Q000502:physiology; D018517:Plant Roots / Q000235:genetics / Q000378:metabolism; D030821:Plants, Genetically Modified / Q000235:genetics / Q000378:metabolism*; D014157:Transcription Factors / Q000235:genetics / Q000378:metabolism
chemical_list: D029681:Arabidopsis Proteins; D051792:Basic Helix-Loop-Helix Proteins; D014157:Transcription Factors; C548371:RSL4 protein, Arabidopsis
keywords: Evolution of root hair; RHD6-like 4 (RSL4); root hair; root hair-specific cis-element (RHE); root hair-specific gene expression; tip growth