title: Organogenesis in plants: initiation and elaboration of leaves.
abstract: Plant organs initiate from meristems and grow into diverse forms. After initiation, organs enter a morphological phase where they develop their shape, followed by differentiation into mature tissue. Investigations into these processes have revealed numerous factors necessary for proper development, including transcription factors such as the KNOTTED-LIKE HOMEOBOX (KNOX) genes, the hormone auxin, and miRNAs. Importantly, these factors have been shown to play a role in organogenesis in various diverse model species, revealing both deep conservation of regulatory strategies and evolutionary novelties that led to new plant forms. We review here recent work in understanding the regulation of organogenesis and in particular leaf formation, highlighting how regulatory modules are often redeployed in different organ types and stages of development to achieve diverse forms through the balance of growth and differentiation.
authors.affiliation: Plant Gene Expression Center, UC Berkeley and USDA-ARS, 800 Buchanan Street, Albany, CA 94710, USA.
authors.forename: Aaron
authors.initials: A
authors.lastname: Sluis
authors.affiliation: Plant Gene Expression Center, UC Berkeley and USDA-ARS, 800 Buchanan Street, Albany, CA 94710, USA.
authors.forename: Sarah
authors.initials: S
authors.lastname: Hake
mesh_terms: D018507:Gene Expression Regulation, Developmental; D018506:Gene Expression Regulation, Plant; D018398:Homeodomain Proteins / Q000235:genetics; D007210:Indoleacetic Acids / Q000378:metabolism; D018519:Meristem / Q000235:genetics* / Q000254:growth & development / Q000378:metabolism; D008957:Models, Genetic; D038081:Organogenesis / Q000235:genetics*; D063245:Plant Development / Q000235:genetics*; D018515:Plant Leaves / Q000235:genetics* / Q000254:growth & development / Q000378:metabolism; D010940:Plant Proteins / Q000235:genetics
chemical_list: D018398:Homeodomain Proteins; D007210:Indoleacetic Acids; C405985:Knox1 protein, plant; D010940:Plant Proteins