Are measurements from excised leaves suitable for modeling diurnal patterns of gas exchange of intact leaves?

2011 ◽  
Vol 25 (18) ◽  
pp. 2924-2930 ◽  
Author(s):  
Yoshiyuki Miyazawa ◽  
Makiko Tateishi ◽  
Hikaru Komatsu ◽  
Tomo'omi Kumagai ◽  
Kyoichi Otsuki
Keyword(s):  
Gas Exchange ◽  
Diurnal Patterns ◽  
Intact Leaves

Gas exchange of Agropyron desertorum: diurnal patterns and responses to water vapor gradient and temperature

Oecologia ◽  
1988 ◽  
Vol 77 (3) ◽  
pp. 289-295 ◽  
Author(s):  
Robert S. Nowak ◽  
Jay E. Anderson ◽  
Nancee L. Toft
Keyword(s):  
Water Vapor ◽  
Gas Exchange ◽  
Agropyron Desertorum ◽  
Diurnal Patterns

scholarly journals Diurnal Patterns of Needle Gas Exchange and Chlorophyll Fluorescence in Japanese Red Pine (Pinus densiflora Sieb. et Zucc.) Seedlings

2000 ◽  
Vol 26 (4) ◽  
pp. 343-348 ◽  
Author(s):  
Tsuyoshi KOBAYASHI ◽  
Nobutake NAKATANI ◽  
Masayo SUZUKI ◽  
Takayuki MIYAKE ◽  
Do Hoon KIM ◽  
...  
Keyword(s):  
Chlorophyll Fluorescence ◽  
Gas Exchange ◽  
Pinus Densiflora ◽  
Red Pine ◽  
Diurnal Patterns ◽  
Japanese Red Pine

scholarly journals Parameterization of a coupled CO<sub>2</sub> and H<sub>2</sub>O gas exchange model at the leaf scale of <i>Populus euphratica</i>

2010 ◽  
Vol 14 (3) ◽  
pp. 419-431 ◽  
Author(s):  
G. F. Zhu ◽  
X. Li ◽  
Y. H. Su ◽  
C. L. Huang
Keyword(s):  
Stomatal Conductance ◽  
Gas Exchange ◽  
Electron Transport Rate ◽  
Populus Euphratica ◽  
Coupled Model ◽  
Net Photosynthesis ◽  
Combined Model ◽  
Validation Data ◽  
Bisphosphate Carboxylase ◽  
Diurnal Patterns

Abstract. The following two models were combined to simultaneously predict CO2 and H2O gas exchange at the leaf scale of Populus euphratica: a Farquhar et al. type biochemical sub-model of photosynthesis (Farquhar et al., 1980) and a Ball et al. type stomatal conductance sub-model (Ball et al., 1987). The photosynthesis parameters [including maximum carboxylation rate allowed by ribulose-1,5-bisphosphate carboxylase/oxygenase (Rubisco) carboxylation rate (Vcmax), potential light-saturated electron transport rate (Jmax), triose phosphate utilization (TPU) and day respiration (Rd)] were determined by using the genetic algorithm (GA) method based on A/Ci data. Values of Vcmax and Jmax standardized at 25 °C were 75.09±1.36 (mean ± standard error), 117.27±2.47, respectively. The stomatal conductance sub-model was calibrated independently. Prediction of net photosynthesis by the coupled model agreed well with the validation data, but the model tended to underestimate transpiration rates. Overall, the combined model generally captured the diurnal patterns of CO2 and H2O exchange resulting from variation in temperature and irradiation.

scholarly journals Physiological Responses of Ocimum basilicum, Salvia officinalis, and Mentha piperita to Leaf Wounding

Plants ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 1019
Author(s):  
Konstantinos Vrakas ◽  
Efterpi Florou ◽  
Athanasios Koulopoulos ◽  
George Zervoudakis
Keyword(s):  
Gas Exchange ◽  
Ocimum Basilicum ◽  
Salvia Officinalis ◽  
Mentha Piperita ◽  
Gas Exchange Parameters ◽  
Wide Range ◽  
Intact Leaves ◽  
Almost All ◽  
Exchange Parameters

The investigation about the leaf wounding effect on plant physiological procedures and on leaf pigments content will contribute to the understanding of the plants’ responses against this abiotic stress. During the experiment, some physiological parameters such as photosynthesis, transpiration and stomatal conductance as well as the chlorophyll and anthocyanin leaf contents of Ocimum basilicum, Salvia officinalis, and Mentha piperita plants were measured for about 20–40 days. All the measurements were conducted on control and wounded plants while in the latter, they were conducted on both wounded and intact leaves. A wide range of responses was observed in the wounded leaves, that is: (a) immediate decrease of the gas exchange parameters and long-term decrease of almost all the measured variables from O. basilicum, (b) immediate but only short-term decrease of the gas exchange parameters and no effect on pigments from M. piperita, and (c) no effect on the gas exchange parameters and decrease of the pigments content from S. officinalis. Regarding the intact leaves, in general, they exhibited a similar profile with the control ones for all plants. These results imply that the plant response to wounding is a complex phenomenon depending on plant species and the severity of the injury.

scholarly journals Parameterization of the coupling CO<sub>2</sub> and H<sub>2</sub>O gas exchange model at the leaf scale of <i>Populus euphratica</i> tree

2009 ◽  
Vol 6 (5) ◽  
pp. 6503-6534
Author(s):  
G. Zhu ◽  
X. Li ◽  
Y. Su ◽  
C. Huang
Keyword(s):  
Stomatal Conductance ◽  
Gas Exchange ◽  
Populus Euphratica ◽  
Coupled Model ◽  
Net Photosynthesis ◽  
Data Sets ◽  
Validation Data ◽  
Bisphosphate Carboxylase ◽  
Diurnal Patterns ◽  
Ribulose 1

Abstract. The following two models were combined to predict simultaneously CO2 and H2O gas exchange at the leaf scale of Populus euphratica: a Farquhar et al. type biochemical sub-model of photosynthesis (Farquhar et al., 1980) and a Ball et al. type stomatal conductance sub-model (Ball et al., 1987). The photosynthesis parameters, Vcmax, Jmax, TPU, and Rd (maximum carboxylation rate allowed by ribulose 1·5-bisphosphate carboxylase/oxygenase (Rubisco), rate of phosynthetic electron transport, triose phosphate use, and day respiration) at the measurement temperature were determined by using the genetic algorithm (GA) method based on A/Ci data sets. The stomatal conductance sub-model was calibrated independently. Prediction of net photosynthesis by the coupled model agreed well with the validation data, but the model tended to underestimate rates of transpiration. Overall, the combined model generally captured the diurnal patterns of CO2and H2O exchange resulting from variation in temperature and irradiation.

scholarly journals Diurnal patterns of gas-exchange and metabolic pools in tundra plants during three phases of the arctic growing season

2013 ◽  
Vol 3 (2) ◽  
pp. 375-388 ◽  
Author(s):  
Rajit Patankar ◽  
Behzad Mortazavi ◽  
Steven F. Oberbauer ◽  
Gregory Starr
Keyword(s):  
Gas Exchange ◽  
Growing Season ◽  
The Arctic ◽  
Diurnal Patterns ◽  
Three Phases

Gas Exchange Studies of Carboxylation Kinetics in Intact Leaves

1987 ◽  
pp. 245-252 ◽  
Author(s):  
A. Laisk ◽  
O. Kiirats ◽  
H. Eichelmann ◽  
V. Oja
Keyword(s):  
Gas Exchange ◽  
Intact Leaves

A practical approach to estimate diffusional leakages of leaf chamber of open gas exchange systems using intact leaves

2017 ◽  
Vol 40 (11) ◽  
pp. 2870-2874 ◽  
Author(s):  
Mitsutoshi Kitao ◽  
Hisanori Harayama ◽  
Akira Uemura
Keyword(s):  
Gas Exchange ◽  
Practical Approach ◽  
Leaf Chamber ◽  
Intact Leaves
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