Book ChapterDOI
Role of the Circadian Clock in Cold Acclimation and Winter Dormancy in Perennial Plants
Mikael Johansson,José M. Ramos-Sánchez,Daniel Conde,Cristian Ibáñez,Naoki Takata,Isabel Allona,Maria E. Eriksson +6 more
- pp 51-74
Reads0
Chats0
TLDR
This chapter provides an update on the plant clock in a model annual, thale cress (Arabidopsis thaliana), and further summarizes recent advances about the clock in perennial plants and its involvement in their annual growth cycles, which allows trees to withstand cold and freezing temperatures.Abstract:
Seasonal variation is a strong cue directing the growth and development of plants. It is particularly important for perennials growing in temperate and boreal regions where woody plants must become dormant to survive freezing winter temperatures. Shortening of the photoperiod induces growth cessation, bud set and a first degree of cold acclimation in most woody plants. The subsequent drop in temperature then produces a greater tolerance to cold and, in deciduous trees, leaf senescence and fall. Trees must time their periods of dormancy accurately with their environment. Circadian clocks underlie this ability, allowing organisms to predict regular, daily changes in their environment as well as longer term seasonal changes. This chapter provides an update on the plant clock in a model annual, thale cress (Arabidopsis thaliana), and further summarizes recent advances about the clock in perennial plants and its involvement in their annual growth cycles, which allows trees to withstand cold and freezing temperatures. Moreover, we outline our views on areas where future work on the circadian clock is necessary to gain insight into the life of a tree.read more
Citations
More filters
Journal ArticleDOI
From bud formation to flowering: transcriptomic state defines the cherry developmental phases of sweet cherry bud dormancy.
Noémie Vimont,Noémie Vimont,Mathieu Fouché,José Antonio Campoy,José Antonio Campoy,José Antonio Campoy,Meixuezi Tong,Mustapha Arkoun,Jean-Claude Yvin,Philip A. Wigge,Elisabeth Dirlewanger,Sandra Cortijo,Bénédicte Wenden +12 more
TL;DR: This study conducted an in-depth transcriptomic analysis for all stages of flower buds in several sweet cherry cultivars that are characterized for their contrasted dates of dormancy release and developed a model based on the transcriptional profiles of just seven genes to accurately predict the main bud dormancy stages.
Journal ArticleDOI
Circadian rhythms vary over the growing season and correlate with fitness components
Matthew J. Rubin,Marcus T. Brock,Amanda M Davis,Amanda M Davis,Zachary M. German,Mary Knapp,Stephen Welch,Stacey L. Harmer,Julin N. Maloof,Seth J. Davis,Seth J. Davis,Cynthia Weinig +11 more
TL;DR: Functional analyses of clock behaviour performed in controlled settings are translated to natural ones, demonstrating that quantitative variation in circadian phase is highly responsive to seasonally variable abiotic factors.
Journal ArticleDOI
Growing in time: exploring the molecular mechanisms of tree growth.
TL;DR: The current state of knowledge concerning the regulation of growth and seasonal dormancy in trees is explored, using information drawn from model systems such as Populus spp.
Journal ArticleDOI
Environmentally Sensitive Molecular Switches Drive Poplar Phenology
TL;DR: This review outlines the current knowledge of these molecular switches in poplar and covers several perspectives concerning the environmental control of growth-dormancy cycles, highlighting certain genetic pathways which are affected by short days, low temperatures and cold-induced signaling.
Journal ArticleDOI
Photoperiodic Regulation of Shoot Apical Growth in Poplar
Paolo M. Triozzi,José M. Ramos-Sánchez,Tamara Hernández-Verdeja,Alicia Moreno-Cortés,Isabel Allona,Mariano Perales +5 more
TL;DR: Current knowledge is reviewed and new data regarding the molecular components of the photoperiod measuring mechanism that regulates annual growth in poplar focusing on main achievements and new perspectives are provided.
References
More filters
Journal ArticleDOI
PLANT COLD ACCLIMATION: Freezing Tolerance Genes and Regulatory Mechanisms
TL;DR: This review of recent advances in determining the nature and function of genes with roles in freezing tolerance and the mechanisms involved in low temperature gene regulation and signal transduction concludes that cold acclimation includes the expression of certain cold-induced genes that function to stabilize membranes against freeze-induced injury.
Journal ArticleDOI
Two transcription factors, DREB1 and DREB2, with an EREBP/AP2 DNA binding domain separate two cellular signal transduction pathways in drought- and low-temperature-responsive gene expression, respectively, in Arabidopsis.
Qiang Liu,Mie Kasuga,Yoh Sakuma,Hiroshi Abe,Setsuko Miura,Kazuko Yamaguchi-Shinozaki,Kazuo Shinozaki +6 more
TL;DR: Overexpression of the DREB1A cDNA in transgenic Arabidopsis plants not only induced strong expression of the target genes under unstressed conditions but also caused dwarfed phenotypes in the transgenic plants, and revealed freezing and dehydration tolerance.
Journal ArticleDOI
Histone acetylation in chromatin structure and transcription
TL;DR: The amino termini of histones extend from the nucleosomal core and are modified by acetyltransferases and deacetylases during the cell cycle, which may direct histone assembly and help regulate the unfolding and activity of genes.
Plant cold acclimation: Freezing tolerance genes and regulatory mechanisms
TL;DR: A review of recent advances in determining the nature and function of genes with roles in freezing tolerance and the mechanisms involved in low temperature gene regulation and signal transduction are described in this article.
Journal ArticleDOI
DNA-binding specificity of the ERF/AP2 domain of Arabidopsis DREBs, transcription factors involved in dehydration- and cold-inducible gene expression
Yoh Sakuma,Qiang Liu,Joseph G. Dubouzet,Hiroshi Abe,Kazuo Shinozaki,Kazuko Yamaguchi-Shinozaki +5 more
TL;DR: Gel mobility shift assay using mutant DREB proteins showed that the two amino acids, valine and glutamic acid conserved in the ERF/AP2 domains, especially valine, have important roles in DNA-binding specificity.