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Anna Maria Jönsson

Professor

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Photoperiod- and temperature-mediated control of phenology in trees – a molecular perspective

Author

  • Rajesh Kumar Singh
  • Tetiana Svystun
  • Badr AlDahmash
  • Anna Maria Jönsson
  • Rishikesh P. Bhalerao

Summary, in English

(Table presented.). Summary: Trees growing in boreal and temperate regions synchronize their growth with seasonal climatic changes in adaptive responses that are essential for their survival. These trees cease growth before the winter and establish a dormant state during which growth cessation is maintained by repression of responses to growth-promotive signals. Reactivation of growth in the spring follows the release from dormancy promoted by prolonged exposure to low temperature during the winter. The timing of the key events and regulation of the molecular programs associated with the key stages of the annual growth cycle are controlled by two main environmental cues: photoperiod and temperature. Recently, key components mediating photoperiodic control of growth cessation and bud set have been identified, and striking similarities have been observed in signaling pathways controlling growth cessation in trees and floral transition in Arabidopsis. Although less well understood, the regulation of bud dormancy and bud burst may involve cell–cell communication and chromatin remodeling. Here, we discuss current knowledge of the molecular-level regulation of the annual growth cycle of woody trees in temperate and boreal regions, and identify key questions that need to be addressed in the future.

Department/s

  • Dept of Physical Geography and Ecosystem Science

Publishing year

2017-01-01

Language

English

Pages

511-524

Publication/Series

New Phytologist

Volume

213

Issue

2

Document type

Journal article review

Publisher

Wiley-Blackwell

Topic

  • Botany

Keywords

  • correlation analysis
  • evolution
  • phloem
  • phylogeny
  • sieve element
  • sieve plate
  • sieve pore
  • trees

Status

Published

ISBN/ISSN/Other

  • ISSN: 0028-646X