title: The secretory peptide gene EPF1 enforces the stomatal one-cell-spacing rule.
abstract: Stomata are innovations of land plants that allow regulated gas exchange. Stomatal precursor cells are produced by asymmetric cell division, and once formed, signal their neighbors to inhibit the formation of stomatal precursors in direct contact. We report a gene of Arabidopsis thaliana, EPIDERMAL PATTERNING FACTOR 1 (EPF1) that encodes a small secretory peptide expressed in stomatal cells and precursors and that controls stomatal patterning through regulation of asymmetric cell division. EPF1 activity is dependent on the TOO MANY MOUTHS receptor-like protein and ERECTA family receptor kinases, suggesting that EPF1 may provide a positional cue interpreted by these receptors.
authors.affiliation: Department of Biological Science, Graduate School of Sciences, Osaka University, Toyonaka, Osaka 560-0043, Japan.
authors.forename: Kenta
authors.initials: K
authors.lastname: Hara
authors.forename: Ryoko
authors.initials: R
authors.lastname: Kajita
authors.forename: Keiko U
authors.initials: KU
authors.lastname: Torii
authors.forename: Dominique C
authors.initials: DC
authors.lastname: Bergmann
authors.forename: Tatsuo
authors.initials: T
authors.lastname: Kakimoto
mesh_terms: D000595:Amino Acid Sequence; D017360:Arabidopsis / Q000166:cytology / Q000235:genetics* / Q000254:growth & development* / Q000378:metabolism; D029681:Arabidopsis Proteins / Q000235:genetics* / Q000378:metabolism; D001483:Base Sequence; D019521:Body Patterning / Q000235:genetics; D018744:DNA, Plant / Q000235:genetics; D004268:DNA-Binding Proteins / Q000235:genetics* / Q000378:metabolism; D018507:Gene Expression Regulation, Developmental; D017343:Genes, Plant; D020930:MAP Kinase Kinase Kinases / Q000235:genetics / Q000378:metabolism; D008954:Models, Biological; D008969:Molecular Sequence Data; D009154:Mutation; D019441:Plant Epidermis / Q000166:cytology / Q000254:growth & development / Q000378:metabolism; D010940:Plant Proteins / Q000235:genetics* / Q000378:metabolism; D030821:Plants, Genetically Modified; D013234:Stem Cells / Q000166:cytology / Q000378:metabolism; D014157:Transcription Factors / Q000235:genetics* / Q000378:metabolism
chemical_list: D029681:Arabidopsis Proteins; D018744:DNA, Plant; D004268:DNA-Binding Proteins; D010940:Plant Proteins; D014157:Transcription Factors; C459090:too many mouths protein, Arabidopsis; D020930:MAP Kinase Kinase Kinases; C481302:YODA protein, Arabidopsis