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Open AccessFeature PaperReview

A Conceptual Framework for Winter Dormancy in Deciduous Trees

Department of Horticultural Sciences, Institute of Crop Science and Resource Conservation (INRES), University of Bonn, 53121 Bonn, Germany
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Agronomy 2020, 10(2), 241; https://doi.org/10.3390/agronomy10020241
Received: 19 December 2019 / Revised: 26 January 2020 / Accepted: 4 February 2020 / Published: 6 February 2020
(This article belongs to the Special Issue Fruit and Nut Tree Phenology in a Warming World)
The perennial life strategy of temperate trees relies on establishing a dormant stage during winter to survive unfavorable conditions. To overcome this dormant stage, trees require cool (i.e., chilling) temperatures as an environmental cue. Numerous approaches have tried to decipher the physiology of dormancy, but these efforts have usually remained relatively narrowly focused on particular regulatory or metabolic processes, recently integrated and linked by transcriptomic studies. This work aimed to synthesize existing knowledge on dormancy into a general conceptual framework to enhance dormancy comprehension. The proposed conceptual framework covers four physiological processes involved in dormancy progression: (i) transport at both whole-plant and cellular level, (ii) phytohormone dynamics, (iii) genetic and epigenetic regulation, and (iv) dynamics of nonstructural carbohydrates. We merged the regulatory levels into a seasonal framework integrating the environmental signals (i.e., temperature and photoperiod) that trigger each dormancy phase. View Full-Text
Keywords: phenology; chilling; cell-to-cell communication; genetics; carbohydrates; phytohormones; vascular transport; DAM genes phenology; chilling; cell-to-cell communication; genetics; carbohydrates; phytohormones; vascular transport; DAM genes
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MDPI and ACS Style

Fadón, E.; Fernandez, E.; Behn, H.; Luedeling, E. A Conceptual Framework for Winter Dormancy in Deciduous Trees. Agronomy 2020, 10, 241.

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