title: Adaxial-abaxial polarity: the developmental basis of leaf shape diversity.
abstract: Leaves of flowering plants are diverse in shape. Part of this morphological diversity can be attributed to differences in spatiotemporal regulation of polarity in the upper (adaxial) and lower (abaxial) sides of developing leaves. In a leaf primordium, antagonistic interactions between polarity determinants specify the adaxial and abaxial domains in a mutually exclusive manner. The patterning of those domains is critical for leaf morphogenesis. In this review, we first summarize the gene networks regulating adaxial-abaxial polarity in conventional bifacial leaves and then discuss how patterning is modified in different leaf type categories.
authors.affiliation: Department of Basic Biology, School of Life Science, Graduate University for Advance Studies (SOKENDAI), Okazaki, 444-8585, Japan; National Institute for Basic Biology, Okazaki, 444-8585, Japan.
authors.forename: Kenji
authors.initials: K
authors.lastname: Fukushima
authors.forename: Mitsuyasu
authors.initials: M
authors.lastname: Hasebe
mesh_terms: D016764:Cell Polarity; D018506:Gene Expression Regulation, Plant; D017343:Genes, Plant; D019684:Magnoliopsida / Q000033:anatomy & histology / Q000235:genetics / Q000254:growth & development* / Q000378:metabolism; D018515:Plant Leaves / Q000033:anatomy & histology / Q000166:cytology / Q000254:growth & development*; D010940:Plant Proteins / Q000235:genetics / Q000378:metabolism
chemical_list: D010940:Plant Proteins
keywords: bifacial leaf; leaf type; peltate leaf; unifacial leaf