Plasticity in gas-exchange physiology of mature Scots pine and European larch drive short- and long-term adjustments to changes in water availability

2017 ◽  
Vol 40 (9) ◽  
pp. 1972-1983 ◽  
Author(s):  
Linda M. Feichtinger ◽  
Rolf T.W. Siegwolf ◽  
Arthur Gessler ◽  
Nina Buchmann ◽  
Mathieu Lévesque ◽  
...  
Keyword(s):  
Gas Exchange ◽  
Scots Pine ◽  
Water Availability ◽  
European Larch ◽  
Short And Long Term

scholarly journals Photosynthetic acclimation and sensitivity to short- and long-term environmental changes

2021 ◽  
Author(s):  
Leonie Schönbeck ◽  
Charlotte Grossiord ◽  
Arthur Gessler ◽  
Jonas Gisler ◽  
Katrin Meusburger ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Gas Exchange ◽  
Environmental Changes ◽  
Leaf Gas Exchange ◽  
Soil Drought ◽  
List Type ◽  
Evaporative Demand ◽  
Leaf Level ◽  
Short And Long Term

SummaryThe 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 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 the gs sensitivity to increasing VPD but not to soil drying. Following irrigation-stop, gas exchange did not decrease immediately, but after three years, had decreased significantly in irrigation-stop trees. Vcmax and Jmax recovered after five years.These results suggest that long-term release of soil drought reduces the sensitivity to atmospheric evaporative demand and that atmospheric constraints may play an increasingly important role in combination with soil drought. In addition, they suggest that structural adjustments lead to an attenuation of initially strong leaf-level acclimation to strong multiple-year drought.

Short and long-term responses of whole-plant gas exchange to elevated CO2 in four herbaceous species

2000 ◽  
Vol 43 (2) ◽  
pp. 155-169 ◽  
Author(s):  
Catherine Roumet ◽  
Eric Garnier ◽  
Hélène Suzor ◽  
Jean-Louis Salager ◽  
Jacques Roy
Keyword(s):  
Gas Exchange ◽  
Elevated Co2 ◽  
Herbaceous Species ◽  
Whole Plant ◽  
Short And Long Term ◽  
Plant Gas Exchange
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