Monitoring of freezing dynamics in trees: a simple phase shift causes complexity
Guillaume Charrier
(1, 2, 3)
,
Markus Nolf
(3, 4)
,
Georg Leitinger
(3)
,
Katline Charra-Vaskou
(5)
,
Adriano Losso
(3)
,
Ulrike Tappeiner
(3, 6)
,
Thierry Ameglio
(5)
,
Stefan Mayr
(3)
1
UMR EGFV -
Ecophysiologie et Génomique Fonctionnelle de la Vigne
2 BioGeCo - Biodiversité, Gènes & Communautés
3 Department of Botany and Department of Ecology
4 HIE - Hawkesbury Institute for the Environment [Richmond]
5 PIAF - Laboratoire de Physique et Physiologie Intégratives de l’Arbre en environnement Fluctuant
6 Institute for Alpine Environment, Eurac Research
2 BioGeCo - Biodiversité, Gènes & Communautés
3 Department of Botany and Department of Ecology
4 HIE - Hawkesbury Institute for the Environment [Richmond]
5 PIAF - Laboratoire de Physique et Physiologie Intégratives de l’Arbre en environnement Fluctuant
6 Institute for Alpine Environment, Eurac Research
Guillaume Charrier
- Fonction : Auteur
- PersonId : 182451
- IdHAL : guillaume-charrier
- ORCID : 0000-0001-8722-8822
- IdRef : 157161773
Georg Leitinger
- Fonction : Auteur
- PersonId : 784244
- ORCID : 0000-0001-6639-3386
Ulrike Tappeiner
- Fonction : Auteur
- PersonId : 781839
- ORCID : 0000-0002-0195-7459
- IdRef : 161915442
Thierry Ameglio
- Fonction : Auteur
- PersonId : 737035
- IdHAL : thierry-ameglio
- ORCID : 0000-0001-6919-3531
- IdRef : 139515828
Résumé
During winter, trees have to cope with harsh conditions, including extreme freeze-thaw stress. This study focused on ice nucleation and propagation, related water shifts and xylem cavitation, as well as cell damage and was based on in situ monitoring of xylem (thermocouples) and surface temperatures (infrared imaging), ultrasonic emissions, and dendrometer analysis. Field experiments during late winter on Picea abies growing at the alpine timberline revealed three distinct freezing patterns: (1) from the top of the tree toward the base, (2) from thin branches toward the main stem's top and base, and (3) from the base toward the top. Infrared imaging showed freezing within branches from their base toward distal parts. Such complex freezing causes dynamic and heterogenous patterns in water potential and probably in cavitation. This study highlights the interaction between environmental conditions upon freezing and thawing and demonstrates the enormous complexity of freezing processes in trees. Diameter shrinkage, which indicated water fluxes within the stem, and acoustic emission analysis, which indicated cavitation events near the ice front upon freezing, were both related to minimum temperature and, upon thawing, related to vapor pressure deficit and soil temperature. These complex patterns, emphasizing the common mechanisms between frost and drought stress, shed new light on winter tree physiology.
Domaines
Sciences du Vivant [q-bio]Format du dépôt | Notice |
---|---|
Type de dépôt | Article dans une revue |
Titre |
en
Monitoring of freezing dynamics in trees: a simple phase shift causes complexity
|
Résumé |
en
During winter, trees have to cope with harsh conditions, including extreme freeze-thaw stress. This study focused on ice nucleation and propagation, related water shifts and xylem cavitation, as well as cell damage and was based on in situ monitoring of xylem (thermocouples) and surface temperatures (infrared imaging), ultrasonic emissions, and dendrometer analysis. Field experiments during late winter on Picea abies growing at the alpine timberline revealed three distinct freezing patterns: (1) from the top of the tree toward the base, (2) from thin branches toward the main stem's top and base, and (3) from the base toward the top. Infrared imaging showed freezing within branches from their base toward distal parts. Such complex freezing causes dynamic and heterogenous patterns in water potential and probably in cavitation. This study highlights the interaction between environmental conditions upon freezing and thawing and demonstrates the enormous complexity of freezing processes in trees. Diameter shrinkage, which indicated water fluxes within the stem, and acoustic emission analysis, which indicated cavitation events near the ice front upon freezing, were both related to minimum temperature and, upon thawing, related to vapor pressure deficit and soil temperature. These complex patterns, emphasizing the common mechanisms between frost and drought stress, shed new light on winter tree physiology.
|
Auteur(s) |
Guillaume Charrier
1, 2, 3
, Markus Nolf
3, 4
, Georg Leitinger
3
, Katline Charra-Vaskou
5
, Adriano Losso
3
, Ulrike Tappeiner
3, 6
, Thierry Ameglio
5
, Stefan Mayr
3
1
UMR EGFV -
Ecophysiologie et Génomique Fonctionnelle de la Vigne
( 227833 )
- I.S.V.V Bordeaux, 210 Chemin de Leysotte 33882 Villenave d’Ornon cedex, France
- France
2
BioGeCo -
Biodiversité, Gènes & Communautés
( 138898 )
- Site de recherche Forêt - Bois de Pierroton - 69, route d'Arcachon F-33612 Cestas Cedex FRANCE
- France
3
Department of Botany and Department of Ecology
( 514820 )
- Autriche
4
HIE -
Hawkesbury Institute for the Environment [Richmond]
( 248972 )
- Western Sydney University, Richmond, New South Wales
- Australie
5
PIAF -
Laboratoire de Physique et Physiologie Intégratives de l’Arbre en environnement Fluctuant
( 491251 )
- Site INRAE Crouël : 5 Chemin de Beaulieu, 63039 Clermont-Ferrand // Site Clermont : 1 Impasse Amélie Murat, 63178 Aubière
- France
6
Institute for Alpine Environment, Eurac Research
( 573864 )
- Drususallee 1, 39100 Bozen/Bolzano, Italy
- Italie
|
Projet(s) Européen(s) |
|
Public visé |
Scientifique
|
Sous-type de document pour les Articles |
Research article
|
Licence |
Paternité - Partage selon les Conditions Initiales
|
Langue du document |
Anglais
|
Nom de la revue |
|
Vulgarisation |
Non
|
Comité de lecture |
Oui
|
Audience |
Non spécifiée
|
Date de publication |
2017
|
Volume |
173
|
Numéro |
4
|
Page/Identifiant |
2196-2207
|
Voir aussi |
|
Domaine(s) |
|
Indexation contrôlée |
|
Mots-clés |
en
heat stress, forest tree
fr
stress thermique, cavitation, période hivernale, arbre forestier, camera infrarouge, dendromètre
|
DOI | 10.1104/pp.16.01815 |
ProdINRA | 396555 |
Pubmed Id | 28242655 |
PubMed Central | PMC5373037 |
UT key WOS | 000402054300019 |
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