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231225s2022 xx |||||o 00| ||eng c |
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|a 10.1093/jxb/erac033
|2 doi
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|a pubmed24n1122.xml
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|a (NLM)35134157
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|a DE-627
|b ger
|c DE-627
|e rakwb
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|a eng
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|a Schönbeck, Leonie
|e verfasserin
|4 aut
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|a Photosynthetic acclimation and sensitivity to short- and long-term environmental changes in a drought-prone forest
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|c 2022
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 20.04.2022
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|a Date Revised 23.05.2022
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|a published: Print
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|a Citation Status MEDLINE
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|a © The Author(s) 2022. Published by Oxford University Press on behalf of the Society for Experimental Biology. All rights reserved. For permissions, please email: journals.permissionsoup.com.
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|a Future climate will be characterized by an increase in frequency and duration of drought and warming that exacerbates atmospheric evaporative demand. How trees acclimate to long-term soil moisture changes and whether these long-term changes alter trees' sensitivity to short-term (day to months) variations of vapor pressure deficit (VPD) and soil moisture is largely unknown. Leaf gas exchange measurements were performed within a long-term (17 years) irrigation experiment in a drought-prone Scots pine-dominated forest in one of Switzerland's driest areas on trees in naturally dry (control), irrigated, and 'irrigation-stop' (after 11 years of irrigation) conditions. Seventeen years of irrigation increased photosynthesis (A) and stomatal conductance (gs) and reduced gs sensitivity to increasing VPD and soil drying. Following irrigation-stop, gas exchange decreased only after 3 years. After 5 years, maximum carboxylation (Vcmax) and electron transport (Jmax) rates in irrigation-stop recovered to similar levels as to before the irrigation-stop. These results suggest that long-term release from soil drought reduces the sensitivity to VPD and that atmospheric constraints may play an increasingly important role in combination with soil drought. Moreover, our study indicates that structural adjustments lead to an attenuation of initially strong leaf-level acclimation to strong multiple-year drought
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a A/Ci
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|a Pinus sylvestris L
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|a gas exchange
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|a irrigation
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|a soil volumetric water content
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|a stomatal conductance
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|a vapor pressure deficit (VPD)
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|a Soil
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|a Water
|2 NLM
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|a 059QF0KO0R
|2 NLM
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|a Grossiord, Charlotte
|e verfasserin
|4 aut
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|a Gessler, Arthur
|e verfasserin
|4 aut
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|a Gisler, Jonas
|e verfasserin
|4 aut
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|a Meusburger, Katrin
|e verfasserin
|4 aut
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|a D'Odorico, Petra
|e verfasserin
|4 aut
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|a Rigling, Andreas
|e verfasserin
|4 aut
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|a Salmon, Yann
|e verfasserin
|4 aut
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|a Stocker, Benjamin D
|e verfasserin
|4 aut
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|a Zweifel, Roman
|e verfasserin
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|a Schaub, Marcus
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 73(2022), 8 vom: 18. Apr., Seite 2576-2588
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnns
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| 773 |
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|g volume:73
|g year:2022
|g number:8
|g day:18
|g month:04
|g pages:2576-2588
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|u http://dx.doi.org/10.1093/jxb/erac033
|3 Volltext
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