Elevated Growth Temperature Modifies Drought and Shade Responses of Fagus sylvatica Seedlings by Altering Growth, Gas Exchange, Water Relations, and Xylem Function DOI Creative Commons

Faustino Rubio,

Ismael Aranda, Rosana López

et al.

Plants, Journal Year: 2025, Volume and Issue: 14(10), P. 1525 - 1525

Published: May 19, 2025

Climate change is increasing global temperatures and imposing new constraints on tree regeneration, especially in late-successional species exposed to simultaneous drought low-light conditions. To disentangle the effects of warming from those atmospheric drought, we conducted a multifactorial growth chamber experiment Fagus sylvatica seedlings, manipulating temperature (25 °C +7.5 above optimum), soil moisture (well-watered vs. water-stressed), light intensity (high low), while maintaining constant vapor pressure deficit (VPD). We assessed growth, biomass allocation, leaf gas exchange, water relations, xylem hydraulic traits. Warming significantly reduced total biomass, area, water-use efficiency, transpiration residual conductance, under high light. Under combined seedlings exhibited impaired osmotic adjustment, safety margins, diminished performance. Unexpectedly, shade promoted resource-acquisitive strategy through production low-cost leaves. These results demonstrate that elevated temperature, even absence increased VPD, can compromise tolerance beech shift their ecological strategies depending availability. The findings underscore need consider multiple, interacting stressors when evaluating regeneration future climate

Language: Английский

In a Different Light: Irradiation‐Induced Cuticular Wax Accumulation Fails to Reduce Cuticular Transpiration DOI Creative Commons
Lena Herzig,

Kora Uellendahl,

Yaron Malkowsky

et al.

Plant Cell & Environment, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 13, 2025

The cuticle, an extracellular hydrophobic layer impregnated with waxy lipids, serves as the primary interface between plant leaves and their environment is thus subject to external cues. A previous study on poplar revealed that environmental conditions outdoors promoted deposition of about 10-fold more cuticular wax compared highly artificial climate a growth chamber. Given light was most significant variable distinguishing two locations, we hypothesized quantity might serve key driver foliar accumulation. Thus, this aimed isolate factor (photosynthetic photon flux density [PPFD]) from other stimuli (such relative humidity ambient temperature) explore its impact subsequent rates residual transpiration in different species. Analytical investigations increase amount increasing PPFD (between 50 1200 µmol m-2 s-1) both monocotyledonous (maize barley) dicotyledonous (tomato bean) crop species, without altering lipid composition. Despite increased coverages, water loss did not decrease, further confirming (cuticular) independent amount.

Language: Английский

Citations

1
Genetic Variation and Phenotypic Plasticity of Leaf Minimum Water Conductance in Temperate Tree Species DOI Open Access
Songwei Wang, Günter Hoch,

Sven Hopf

et al.

Plant Cell & Environment, Journal Year: 2025, Volume and Issue: unknown

Published: Feb. 13, 2025

ABSTRACT The survival time of trees under drought is intimately linked to leaf minimum water conductance on the surface ( g min ), which determines residual loss after maximum stomatal closure. Considerable interspecies variation in has been documented, but intraspecific resulting from genetic G ) and phenotypic plasticity E remains unclear. We measured temperature response T different provenances four temperate tree species growing three common gardens differing availability assessed , × . Additionally, we explored how cuticular traits are related For all species, our results showed strong low high for Interestingly, was more pronounced deciduous angiosperm than evergreen conifers. Surprisingly, there significant some species. Contrary expectation, found no effect Our study suggests that most potent driver intraspecies possibly contributing acclimation a future hotter dryer climate.

Language: Английский

Citations

0
Molecular Mechanisms of Plant Abiotic Stress Tolerance DOI Open Access
Michael Moustakas

International Journal of Molecular Sciences, Journal Year: 2025, Volume and Issue: 26(6), P. 2731 - 2731

Published: March 18, 2025

Global climate change compromises sufficient food production, and it is estimated that may be reduced by 11–25% at the end of this century [...]

Language: Английский

Citations

0
Elevated Growth Temperature Modifies Drought and Shade Responses of Fagus sylvatica Seedlings by Altering Growth, Gas Exchange, Water Relations, and Xylem Function DOI Creative Commons

Faustino Rubio,

Ismael Aranda, Rosana López

et al.

Plants, Journal Year: 2025, Volume and Issue: 14(10), P. 1525 - 1525

Published: May 19, 2025

Climate change is increasing global temperatures and imposing new constraints on tree regeneration, especially in late-successional species exposed to simultaneous drought low-light conditions. To disentangle the effects of warming from those atmospheric drought, we conducted a multifactorial growth chamber experiment Fagus sylvatica seedlings, manipulating temperature (25 °C +7.5 above optimum), soil moisture (well-watered vs. water-stressed), light intensity (high low), while maintaining constant vapor pressure deficit (VPD). We assessed growth, biomass allocation, leaf gas exchange, water relations, xylem hydraulic traits. Warming significantly reduced total biomass, area, water-use efficiency, transpiration residual conductance, under high light. Under combined seedlings exhibited impaired osmotic adjustment, safety margins, diminished performance. Unexpectedly, shade promoted resource-acquisitive strategy through production low-cost leaves. These results demonstrate that elevated temperature, even absence increased VPD, can compromise tolerance beech shift their ecological strategies depending availability. The findings underscore need consider multiple, interacting stressors when evaluating regeneration future climate

Language: Английский

Citations

0