alexa Shoot meristems of deciduous woody perennials: self-organization and morphogenetic transitions.
General Science

General Science

Forest Research: Open Access

Author(s): Paul LK, Rinne PL, van der Schoot C

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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. Copyright © 2013 The Authors. Published by Elsevier Ltd.. All rights reserved. This article was published in Curr Opin Plant Biol and referenced in Forest Research: Open Access

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