Plant Cell & Environment, Journal Year: 2024, Volume and Issue: unknown
Published: Dec. 24, 2024
Summary statement The overlooked role of capacitance is revealed theoretically for vapor flow and by dimensional analogy liquid flow. It combines with conductance to attribute distinctly the physiological physical contributions quantitative formulation plant transpiration sap
Language: Английский
Global Change Biology, Journal Year: 2025, Volume and Issue: 31(1)
Published: Jan. 1, 2025
ABSTRACT Stomata control plant water loss and photosynthetic carbon gain. Developing more generalized accurate stomatal models is essential for earth system predicting responses under novel environmental conditions associated with global change. Plant optimality theories offer one promising approach, but most such assume that conductance maximizes net assimilation subject to some cost or constraint of water. We move beyond this approach by developing a new, theory conductance, optimizing any non‐foliar proxy requires reserves, like growth, survival, reproduction. overcome two prior limitations. First, we reconcile the computational efficiency instantaneous optimization biologically meaningful dynamic feedback over lifespans. Second, incorporate non‐steady‐state physics in account temporal changes water, carbon, energy storage within its environment occur timescales stomata act, contrary previous theories. Our optimal compares well observations from seedlings, saplings, mature trees field greenhouse experiments. model predicts predispositions mortality during 2018 European drought captures realistic cues, including partial alleviation heat stress evaporative cooling negative effect accumulating foliar soluble carbohydrates, promoting closure elevated CO 2 . advance incorporating evolutionary fitness proxies enhance utility without compromising realism, offering promise future realistically accurately predict fluxes.
Language: Английский
Citations
1
New Phytologist, Journal Year: 2025, Volume and Issue: unknown
Published: March 13, 2025
Summary The regulation of vascular water potential (Ψ stem ) by stomata is one the most dynamic and important behaviours in plants, playing a central role determining gas exchange vulnerability to drought. Yet, species‐specific characterization Ψ regulatory behaviour response soil or atmospheric dryness remains elusive. We hypothesize that can only be defined when combination both vapour pressure deficit (VPD) effects considered. To test this hypothesis, we collected high‐resolution time series using optical dendrometers from trees hardy conifer, Callitris rhomboidea , monitored across multiple highly variable growing seasons. over total 571 d could predicted on basis diurnal VPD ( R 2 = 0.74) five mechanism‐aligned parameters describe specific stomatal regulation. Our novel approach predict variation seasonal change data continuous monitoring technique creates new opportunity quantitatively compare use climatic sensitivity between diverse species genotypes field laboratory.
Language: Английский
Citations
0
Agricultural Water Management, Journal Year: 2025, Volume and Issue: 313, P. 109480 - 109480
Published: April 15, 2025
Language: Английский
Citations
0
Environmental and Experimental Botany, Journal Year: 2025, Volume and Issue: unknown, P. 106151 - 106151
Published: April 1, 2025
Language: Английский
Citations
0
Agricultural Water Management, Journal Year: 2024, Volume and Issue: 299, P. 108879 - 108879
Published: May 19, 2024
A high atmospheric vapour pressure deficit (VPD) hinders calcium absorption in tomatoes (Solanum lycopersicum L.), which severely reduces tomato yield, crop water productivity (WPcrop), and quality. Although reducing the VPD is effective for increasing yield productivity, regulating costly. Therefore, this study aimed to explore effects of regulation (high VPD=2.22 kPa, low VPD=0.95 kPa) during different growth stages on WPcrop, quality identify a management method that saves costs enhances above parameters. The results showed was significantly positively correlated with fruit absorption. Decreasing expansion stage it flowering increased accumulation fruits, thereby improving Additionally, stomatal conductance mesophyll conductance, intercellular chloroplast CO2 concentrations enhancing plant photosynthetic capacity, reduced stem potential, leaf relative content, potential difference, hydraulic By integrating game theory technique order preference by similarity ideal solution method, comprehensive analysis appearance, nutrients, flavour revealed growing plants under seedling, flowering, ripening not only enhanced value but also maximally humidification cost. Conclusively, controlling environmental at 2.22 kPa 0.95 can effectively increase This provides theoretical basis high-quality, efficient, water-conserving cultivation greenhouse tomatoes.
Language: Английский
Citations
3
PLANT PHYSIOLOGY, Journal Year: 2025, Volume and Issue: 198(1)
Published: April 30, 2025
Abstract High rates of photosynthesis require abundant water delivered to the canopy replace lost transpiration. In addition drawn immediately from soil, stem capacitance has been identified as an additional source, particularly during transient transpiration states. However, little information is available about potential roots contribute plant because methodological constraints have made it challenging quantify root capacitance. this study, we present a method measure storage capacity system and assess its contribution daytime We used optical dendrometer obtain in situ measurements 2 contrasting conifer species, Oyster Bay pine (Callitris rhomboidea) Monterey (Pinus radiata), allowing us diurnal changes deficit. employed modified flow meter gauge rehydration kinetics below-ground above-ground systems separately. observed that major supplier demands for both species. Notably, total exceeded C. rhomboidea, while capacitances were similar P. radiata. Our findings highlight importance measuring including hydraulic models accurately predict status stomatal behavior.
Language: Английский
Citations
0
Urban forestry & urban greening, Journal Year: 2024, Volume and Issue: 98, P. 128411 - 128411
Published: June 19, 2024
Language: Английский
Citations
2
New Phytologist, Journal Year: 2024, Volume and Issue: 244(1), P. 147 - 158
Published: Aug. 2, 2024
The onset of stomatal closure reduces transpiration during drought. In seed plants, drought causes declines in plant water status which increases leaf endogenous abscisic acid (ABA) levels required for closure. There are multiple possible points increased belowground resistance the soil-plant atmospheric continuum that could decrease potential enough to trigger ABA production and subsequent decreases transpiration. We investigate dynamic patterns levels, hydraulic conductance point failure highly embolism-resistant species Callitris tuberculata using continuous dendrometer measurements show biosynthesis begin before any permanent predawn potential, collapse pathway xylem embolism spread. find a but recoverable soil close proximity roots is most likely driver midday needed
Language: Английский
Citations
2
Journal of Hydrology, Journal Year: 2024, Volume and Issue: unknown, P. 132441 - 132441
Published: Nov. 1, 2024
Language: Английский
Citations
0
Plant Cell & Environment, Journal Year: 2024, Volume and Issue: unknown
Published: Dec. 24, 2024
Summary statement The overlooked role of capacitance is revealed theoretically for vapor flow and by dimensional analogy liquid flow. It combines with conductance to attribute distinctly the physiological physical contributions quantitative formulation plant transpiration sap
Language: Английский
Citations
0