Desiccation and Mortality Dynamics in Seedlings of Different European Beech (Fagus sylvatica L.) Populations under Extreme Drought Conditions
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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; Psidova, Eva; Ditmarova, Lubica; Dinca, Lucian; Delzon, Sylvain; Cochard, Herve; Ræbild, Anders; de Luis, Martin; Cvjetkovic, Branislav; Heiri, Caroline; Müller, Jürgen.
In: Frontiers in Plant Science, Vol. 7, 751, 14.06.2016.Research output: Contribution to journal › Journal article › Research › peer-review
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TY - JOUR
T1 - Desiccation and Mortality Dynamics in Seedlings of Different European Beech (Fagus sylvatica L.) Populations under Extreme Drought Conditions
AU - Bolte, Andreas
AU - Czajkowski, Tomasz
AU - Cocozza, Claudia
AU - Tognetti, Roberto
AU - de Miguel, Marina
AU - Psidova, Eva
AU - Ditmarova, Lubica
AU - Dinca, Lucian
AU - Delzon, Sylvain
AU - Cochard, Herve
AU - Ræbild, Anders
AU - de Luis, Martin
AU - Cvjetkovic, Branislav
AU - Heiri, Caroline
AU - Müller, Jürgen
PY - 2016/6/14
Y1 - 2016/6/14
N2 - European beech (Fagus sylvatica L., hereafter beech), one of the major native treespecies in Europe, is known to be drought sensitive. Thus, the identification of criticalthresholds of drought impact intensity and duration are of high interest for assessingthe adaptive potential of European beech to climate change in its native range. Ina common garden experiment with one-year-old seedlings originating from centraland marginal origins in six European countries (Denmark, Germany, France, Romania,Bosnia-Herzegovina, and Spain), we applied extreme drought stress and observeddesiccation and mortality processes among the different populations and related them toplant water status (predawn water potential, 9PD) and soil hydraulic traits. For the lethaldrought assessment, we used a critical threshold of soil water availability that is reachedwhen 50% mortality in seedling populations occurs (LD50SWA). We found significantpopulation differences in LD50SWA (10.5–17.8%), and mortality dynamics that suggesta genetic difference in drought resistance between populations. The LD50SWA valuescorrelate significantly with the mean growing season precipitation at population origins,but not with the geographic margins of beech range. Thus, beech range marginality maybe more due to climatic conditions than to geographic range. The outcome of this studysuggests the genetic variation has a major influence on the varying adaptive potential ofthe investigated populations.
AB - European beech (Fagus sylvatica L., hereafter beech), one of the major native treespecies in Europe, is known to be drought sensitive. Thus, the identification of criticalthresholds of drought impact intensity and duration are of high interest for assessingthe adaptive potential of European beech to climate change in its native range. Ina common garden experiment with one-year-old seedlings originating from centraland marginal origins in six European countries (Denmark, Germany, France, Romania,Bosnia-Herzegovina, and Spain), we applied extreme drought stress and observeddesiccation and mortality processes among the different populations and related them toplant water status (predawn water potential, 9PD) and soil hydraulic traits. For the lethaldrought assessment, we used a critical threshold of soil water availability that is reachedwhen 50% mortality in seedling populations occurs (LD50SWA). We found significantpopulation differences in LD50SWA (10.5–17.8%), and mortality dynamics that suggesta genetic difference in drought resistance between populations. The LD50SWA valuescorrelate significantly with the mean growing season precipitation at population origins,but not with the geographic margins of beech range. Thus, beech range marginality maybe more due to climatic conditions than to geographic range. The outcome of this studysuggests the genetic variation has a major influence on the varying adaptive potential ofthe investigated populations.
U2 - 10.3389/fpls.2016.00751
DO - 10.3389/fpls.2016.00751
M3 - Journal article
C2 - 27379105
VL - 7
JO - Frontiers in Plant Science
JF - Frontiers in Plant Science
SN - 1664-462X
M1 - 751
ER -
ID: 167549384