Insights from in vivo micro-CT analysis: testing the hydraulic vulnerability segmentation in Acer pseudoplatanus and Fagus sylvatica seedlings.
xylem
X-ray phase contrast micro-tomography (micro-CT)
beech (Fagus sylvatica)
embolism
hydraulic vulnerability segmentation
maple (Acer pseudoplatanus)
seedlings
synchrotron
Journal
The New phytologist
ISSN: 1469-8137
Titre abrégé: New Phytol
Pays: England
ID NLM: 9882884
Informations de publication
Date de publication:
03 2019
03 2019
Historique:
received:
18
04
2018
accepted:
14
10
2018
pubmed:
23
10
2018
medline:
10
1
2020
entrez:
23
10
2018
Statut:
ppublish
Résumé
The seedling stage is the most susceptible one during a tree's life. Water relations may be crucial for seedlings due to their small roots, limited water buffers and the effects of drought on water transport. Despite obvious relevance, studies on seedling xylem hydraulics are scarce as respective methodical approaches are limited. Micro-CT scans of intact Acer pseudoplatanus and Fagus sylvatica seedlings dehydrated to different water potentials (Ψ) allowed the simultaneous observation of gas-filled versus water-filled conduits and the calculation of percentage loss of conductivity (PLC) in stems, roots and leaves (petioles or main veins). Additionally, anatomical analyses were performed and stem PLC measured with hydraulic techniques. In A. pseudoplatanus, petioles showed a higher Ψ at 50% PLC (Ψ
Identifiants
pubmed: 30347122
doi: 10.1111/nph.15549
pmc: PMC6492020
doi:
Types de publication
Journal Article
Research Support, Non-U.S. Gov't
Langues
eng
Sous-ensembles de citation
IM
Pagination
1831-1842Subventions
Organisme : Bundesministerium für Wissenschaft, Forschung und Wirtschaft
ID : SPA 05/017
Pays : International
Organisme : Austrian Science Fund
ID : P29896-B22
Pays : International
Organisme : Austrian Science Fund
ID : T667-B16
Pays : International
Organisme : Austrian Science Fund FWF
ID : T 667
Pays : Austria
Organisme : Austrian Science Fund FWF
ID : P 29896
Pays : Austria
Informations de copyright
© 2018 The Authors. New Phytologist © 2018 New Phytologist Trust.
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