Desiccation and Mortality Dynamics in Seedlings of Different European Beech (Fagus sylvatica L.) Populations under Extreme Drought Conditions

Desiccation and Mortality Dynamics in Seedlings of Different European Beech (Fagus sylvatica L.) Populations under Extreme Drought Conditions

European beech (Fagus sylvatica L., hereafter beech), one of the major native tree species in Europe, is known to be drought sensitive. Thus, the identification of critical thresholds of drought impact intensity and duration are of high interest for assessing the adaptive potential of European beech...

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Main Authors: Bolte, Andreas, Czajkowski, Tomasz, Cocozza, Claudia, Tognetti, Roberto, de Miguel, Marina, Pšidová, Eva, Ditmarová, Ĺubica, Dinca, Lucian, Delzon, Sylvain, Cochard, Hervè, Ræbild, Anders, de Luis, Martin, Cvjetkovic, Branislav, Heiri, Caroline, Müller, Jürgen
Format: Online
Language:English
Published: Frontiers Media S.A. 2016
Online Access:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4906631/
id pubmed-4906631
recordtype oai_dc
spelling pubmed-49066312016-07-04 Desiccation and Mortality Dynamics in Seedlings of Different European Beech (Fagus sylvatica L.) Populations under Extreme Drought Conditions Bolte, Andreas Czajkowski, Tomasz Cocozza, Claudia Tognetti, Roberto de Miguel, Marina Pšidová, Eva Ditmarová, Ĺubica Dinca, Lucian Delzon, Sylvain Cochard, Hervè Ræbild, Anders de Luis, Martin Cvjetkovic, Branislav Heiri, Caroline Müller, Jürgen Plant Science European beech (Fagus sylvatica L., hereafter beech), one of the major native tree species in Europe, is known to be drought sensitive. Thus, the identification of critical thresholds of drought impact intensity and duration are of high interest for assessing the adaptive potential of European beech to climate change in its native range. In a common garden experiment with one-year-old seedlings originating from central and marginal origins in six European countries (Denmark, Germany, France, Romania, Bosnia-Herzegovina, and Spain), we applied extreme drought stress and observed desiccation and mortality processes among the different populations and related them to plant water status (predawn water potential, ΨPD) and soil hydraulic traits. For the lethal drought assessment, we used a critical threshold of soil water availability that is reached when 50% mortality in seedling populations occurs (LD50SWA). We found significant population differences in LD50SWA (10.5–17.8%), and mortality dynamics that suggest a genetic difference in drought resistance between populations. The LD50SWA values correlate significantly with the mean growing season precipitation at population origins, but not with the geographic margins of beech range. Thus, beech range marginality may be more due to climatic conditions than to geographic range. The outcome of this study suggests the genetic variation has a major influence on the varying adaptive potential of the investigated populations. Frontiers Media S.A. 2016-06-14 /pmc/articles/PMC4906631/ /pubmed/27379105 http://dx.doi.org/10.3389/fpls.2016.00751 Text en Copyright © 2016 Bolte, Czajkowski, Cocozza, Tognetti, de Miguel, Pšidová, Ditmarová, Dinca, Delzon, Cochard, Ræbild, de Luis, Cvjetkovic, Heiri and Müller. http://creativecommons.org/licenses/by/4.0/ This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) or licensor are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
repository_type Open Access Journal
institution_category Foreign Institution
institution US National Center for Biotechnology Information
building NCBI PubMed
collection Online Access
language English
format Online
author Bolte, Andreas
Czajkowski, Tomasz
Cocozza, Claudia
Tognetti, Roberto
de Miguel, Marina
Pšidová, Eva
Ditmarová, Ĺubica
Dinca, Lucian
Delzon, Sylvain
Cochard, Hervè
Ræbild, Anders
de Luis, Martin
Cvjetkovic, Branislav
Heiri, Caroline
Müller, Jürgen
spellingShingle Bolte, Andreas
Czajkowski, Tomasz
Cocozza, Claudia
Tognetti, Roberto
de Miguel, Marina
Pšidová, Eva
Ditmarová, Ĺubica
Dinca, Lucian
Delzon, Sylvain
Cochard, Hervè
Ræbild, Anders
de Luis, Martin
Cvjetkovic, Branislav
Heiri, Caroline
Müller, Jürgen
Desiccation and Mortality Dynamics in Seedlings of Different European Beech (Fagus sylvatica L.) Populations under Extreme Drought Conditions
author_facet Bolte, Andreas
Czajkowski, Tomasz
Cocozza, Claudia
Tognetti, Roberto
de Miguel, Marina
Pšidová, Eva
Ditmarová, Ĺubica
Dinca, Lucian
Delzon, Sylvain
Cochard, Hervè
Ræbild, Anders
de Luis, Martin
Cvjetkovic, Branislav
Heiri, Caroline
Müller, Jürgen
author_sort Bolte, Andreas
title Desiccation and Mortality Dynamics in Seedlings of Different European Beech (Fagus sylvatica L.) Populations under Extreme Drought Conditions
title_short Desiccation and Mortality Dynamics in Seedlings of Different European Beech (Fagus sylvatica L.) Populations under Extreme Drought Conditions
title_full Desiccation and Mortality Dynamics in Seedlings of Different European Beech (Fagus sylvatica L.) Populations under Extreme Drought Conditions
title_fullStr Desiccation and Mortality Dynamics in Seedlings of Different European Beech (Fagus sylvatica L.) Populations under Extreme Drought Conditions
title_full_unstemmed Desiccation and Mortality Dynamics in Seedlings of Different European Beech (Fagus sylvatica L.) Populations under Extreme Drought Conditions
title_sort desiccation and mortality dynamics in seedlings of different european beech (fagus sylvatica l.) populations under extreme drought conditions
description European beech (Fagus sylvatica L., hereafter beech), one of the major native tree species in Europe, is known to be drought sensitive. Thus, the identification of critical thresholds of drought impact intensity and duration are of high interest for assessing the adaptive potential of European beech to climate change in its native range. In a common garden experiment with one-year-old seedlings originating from central and marginal origins in six European countries (Denmark, Germany, France, Romania, Bosnia-Herzegovina, and Spain), we applied extreme drought stress and observed desiccation and mortality processes among the different populations and related them to plant water status (predawn water potential, ΨPD) and soil hydraulic traits. For the lethal drought assessment, we used a critical threshold of soil water availability that is reached when 50% mortality in seedling populations occurs (LD50SWA). We found significant population differences in LD50SWA (10.5–17.8%), and mortality dynamics that suggest a genetic difference in drought resistance between populations. The LD50SWA values correlate significantly with the mean growing season precipitation at population origins, but not with the geographic margins of beech range. Thus, beech range marginality may be more due to climatic conditions than to geographic range. The outcome of this study suggests the genetic variation has a major influence on the varying adaptive potential of the investigated populations.
publisher Frontiers Media S.A.
publishDate 2016
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4906631/
_version_ 1613594246075383808

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