Stomatal acclimation to vapour pressure deficit doubles transpiration of small tree seedlings with warming.

@article{Marchin2016StomatalAT,
  title={Stomatal acclimation to vapour pressure deficit doubles transpiration of small tree seedlings with warming.},
  author={Ren{\'e}e M. Marchin and Alice Ann Broadhead and Laura Elizabeth Bostic and Robert R. Dunn and William A. Hoffmann},
  journal={Plant, cell \& environment},
  year={2016},
  volume={39 10},
  pages={
          2221-34
        }
}
Future climate change is expected to increase temperature (T) and atmospheric vapour pressure deficit (VPD) in many regions, but the effect of persistent warming on plant stomatal behaviour is highly uncertain. We investigated the effect of experimental warming of 1.9-5.1 °C and increased VPD of 0.5-1.3 kPa on transpiration and stomatal conductance (gs ) of tree seedlings in the temperate forest understory (Duke Forest, North Carolina, USA). We observed peaked responses of transpiration to VPD… 

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References

SHOWING 1-10 OF 106 REFERENCES
Stomatal conductance and transpiration in shoots of Scots pine after 4-year exposure to elevated CO2 and temperature
TLDR
Long-term elevation of CO2 led to a significant decline in the absolute value of gs at almost all levels of Qp, Dv, Ci, and Tl, while the effect of the combination of elevated CO2 and temperature did not appear as a mean of the effects of the two single factors, while there was an interaction between the two factors.
Stomatal acclimation influences water and carbon fluxes of a beech canopy in northern Germany
Summary The response of beech leaves to leaf-to-air vapour pressure deficit (VPD) is not constant throughout the growing season. In situ measurements of leaf gas exchange showed that this
The apparent feed-forward response to vapour pressure deficit of stomata in droughted, field-grown Eucalyptus globulus Labill
This study tested a multiplicative model of stomatal response to environment for drought-affected trees of Eucalyptus globulus Labill. growing in southern Australia. The model incorporates a
Temperature influences the ability of tall fescue to control transpiration in response to atmospheric vapour pressure deficit.
TLDR
Transpiration control by this cool season grass is most effective in the temperature range where it is best adapted, with adjustment to drier conditions becoming evident after ~1 week.
Increased vapor pressure deficit due to higher temperature leads to greater transpiration and faster mortality during drought for tree seedlings common to the forest-grassland ecotone.
TLDR
If temperature and severity of droughts increase in the future, the forest-grassland ecotone could shift because low seedling survival rate may not sufficiently support forest regeneration and migration.
Acclimation to humidity modifies the link between leaf size and the density of veins and stomata.
TLDR
Plasticity in vein and stomatal density appears to be generated by plasticity in cell size rather than cell number, which results in inefficient acclimation to VPD as stomata remain partially closed under high VPD.
A reinterpretation of stomatal responses to humidity
The stomatal conductance (g) for single leaves and the equivalent canopy conductance for stands of vegetation are often represented in models as empirical functions of saturation vapour pressure
Variability among species of stomatal control under fluctuating soil water status and evaporative demand: modelling isohydric and anisohydric behaviours
TLDR
Stomatal conductance of well-watered plants had no response to VPD when plants were grown in natural soils, suggesting that the opposite result observed in many laboratory experiments might be linked to the low unsaturated hydraulic conductivity of usual potting substrates.
...
1
2
3
4
5
...