title: A conserved molecular framework for compound leaf development.
abstract: Diversity in leaf shape is produced by alterations of the margin: for example, deep dissection leads to leaflet formation and less-pronounced incision results in serrations or lobes. By combining gene silencing and mutant analyses in four distantly related eudicot species, we show that reducing the function of NAM/CUC boundary genes (NO APICAL MERISTEM and CUP-SHAPED COTYLEDON) leads to a suppression of all marginal outgrowths and to fewer and fused leaflets. We propose that NAM/CUC genes promote formation of a boundary domain that delimits leaflets. This domain has a dual role promoting leaflet separation locally and leaflet formation at distance. In this manner, boundaries of compound leaves resemble boundaries functioning during animal development.
authors.affiliation: Laboratoire de Biologie Cellulaire, Institut Jean Pierre Bourgin, Institut National de la Recherche Agronomique (INRA), 78026 Versailles Cedex, France.
authors.forename: Thomas
authors.initials: T
authors.lastname: Blein
authors.forename: Amada
authors.initials: A
authors.lastname: Pulido
authors.forename: Aurélie
authors.initials: A
authors.lastname: Vialette-Guiraud
authors.forename: Krisztina
authors.initials: K
authors.lastname: Nikovics
authors.forename: Halima
authors.initials: H
authors.lastname: Morin
authors.forename: Angela
authors.initials: A
authors.lastname: Hay
authors.forename: Ida Elisabeth
authors.initials: IE
authors.lastname: Johansen
authors.forename: Miltos
authors.initials: M
authors.lastname: Tsiantis
authors.forename: Patrick
authors.initials: P
authors.lastname: Laufs
mesh_terms: D000595:Amino Acid Sequence; D031884:Aquilegia / Q000235:genetics / Q000254:growth & development / Q000378:metabolism; D031217:Cardamine / Q000235:genetics / Q000254:growth & development / Q000378:metabolism; D020869:Gene Expression Profiling; D018506:Gene Expression Regulation, Plant; D020868:Gene Silencing; D017343:Genes, Plant; D018551:Solanum lycopersicum / Q000235:genetics / Q000254:growth & development / Q000378:metabolism; D008969:Molecular Sequence Data; D018532:Pisum sativum / Q000235:genetics / Q000254:growth & development; D010802:Phylogeny; D018515:Plant Leaves / Q000235:genetics / Q000254:growth & development* / Q000378:metabolism; D010940:Plant Proteins / Q000235:genetics / Q000378:metabolism; D030821:Plants, Genetically Modified; D011198:Solanum tuberosum / Q000235:genetics / Q000254:growth & development / Q000378:metabolism; D014157:Transcription Factors / Q000737:chemistry / Q000235:genetics* / Q000378:metabolism
chemical_list: D010940:Plant Proteins; D014157:Transcription Factors