title: Shoot meristems of deciduous woody perennials: self-organization and morphogenetic transitions.
abstract: Shoot apical meristems of deciduous woody perennials share gross structural features with other angiosperms, but are unique in the seasonal regulation of vegetative and floral meristems. Supporting longevity, flowering is postponed to the adult phase, and restricted to some axillary meristems. In cold climates, photoperiodic timing mechanisms and chilling are recruited to schedule end-of-season growth arrest, dormancy cycling and flowering. We review recently uncovered generic meristem properties, perennial meristem fate, and the role of CENL1, FT1 and FT2 in bud formation and flowering. We also highlight novel findings, suggesting that dormancy release is mediated by mobile lipid bodies that deliver enzymes to plasmodesmata to recover symplasmic communication and meristem function.
authors: Department of Plant and Environmental Sciences, Norwegian University of Life Sciences, PO Box 5003, 1432 Ås, Norway.
authors: Laju K
authors: LK
authors: Paul
authors: Department of Plant and Environmental Sciences, Norwegian University of Life Sciences, PO Box 5003, 1432 Ås, Norway.
authors: Päivi L H
authors: PL
authors: Rinne
authors: Department of Plant and Environmental Sciences, Norwegian University of Life Sciences, PO Box 5003, 1432 Ås, Norway. Electronic address: chris.vanderschoot@umb.no.
authors: Christiaan
authors: C
authors: van der Schoot
mesh_terms: D035264:Flowers / Q000254:growth & development / Q000502:physiology*; D019684:Magnoliopsida / Q000254:growth & development / Q000502:physiology*; D018519:Meristem / Q000254:growth & development / Q000502:physiology*; D008954:Models, Biological; D009024:Morphogenesis; D010940:Plant Proteins / Q000378:metabolism; D018520:Plant Shoots / Q000254:growth & development / Q000502:physiology*; D031425:Plasmodesmata / Q000502:physiology; D012621:Seasons; D014934:Wood / Q000254:growth & development / Q000502:physiology
chemical_list: D010940:Plant Proteins