Fluorescence Parameters Measured Concurrently with Net Photosynthesis to Investigate Chloroplastic CO2 Concentration in Leaves of Quercus ilex L.

Marco, Giorgio Di; Manes, Fausto; Tricoli, D.; Vitale, Elisabetta

doi:10.1016/s0176-1617(11)80210-5

Cited by 97 publications

(61 citation statements)

References 9 publications

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“…There was a linear relationship between Φ CO 2 and Φ PSII. Previously many reports found a linear relationship between Φ CO 2 and Φ PSII under non-or low-photorespiratory conditions with changing light intensity (Genty et al, 1989;Genty et al, 1990;Marco et al, 1990;Baker, 1991;Krall and Edwards, 1992;Edwards and Baker, 1993;Valentini et al, 1995;Habash et al, 1995). The slopes of the straight line under ambient and elevated CO 2 were 8.66 and 8.81, respectively in K and 7.70 and 8.19, respectively in WC.…”

Section: Changes In the Rate Of Photosynthetic Comentioning

confidence: 80%

Effects of Growth under Elevated CO₂on the Capacity of Photosynthesis in Two Radish Cultivars Differing in Capacity of Storage Root

Usuda

2004

Plant Production Science

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Section: Changes In the Rate Of Photosynthetic Comentioning

confidence: 80%

Effects of Growth under Elevated CO₂on the Capacity of Photosynthesis in Two Radish Cultivars Differing in Capacity of Storage Root

Usuda

2004

Plant Production Science

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“…However, the tight relationship between Φ PSII , LUE, and PRI may exist only under non-stressed conditions [51], typically observed under low light intensities. Stress conditions usually develop into decoupling between photosynthetic electron transport and RuBisCO carboxylation that results in irregularities in the relationship between PRI and LUE as observed in Figures 9 and 10.…”

Section: Use Of Pri For Determining Photosynthetic Parametersmentioning

confidence: 99%

Potential of Photochemical Reflectance Index for Indicating Photochemistry and Light Use Efficiency in Leaves of European Beech and Norway Spruce Trees

et al. 2018

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Hyperspectral reflectance is becoming more frequently used for measuring the functions and productivity of ecosystems. The purpose of this study was to re-evaluate the potential of the photochemical reflectance index (PRI) for evaluating physiological status of plants. This is needed because the reasons for variation in PRI and its relationships to physiological traits remain poorly understood. We examined the relationships between PRI and photosynthetic parameters in evergreen Norway spruce and deciduous European beech grown in controlled conditions during several consecutive periods of 10-12 days between which the irradiance and air temperature were changed stepwise. These regime changes induced significant changes in foliar biochemistry and physiology. The responses of PRI corresponded particularly to alterations in the actual quantum yield of photosystem II photochemistry (Φ PSII ). Acclimation responses of both species led to loss of PRI sensitivity to light use efficiency (LUE). The procedure of measuring PRI at multiple irradiance-temperature conditions has been designed also for testing accuracy of ∆PRI in estimating LUE. A correction mechanism of subtracting daily measured PRI from early morning PRI has been performed to account for differences in photosynthetic pigments between irradiance-temperature regimes. Introducing ∆PRI, which provided a better estimate of non-photochemical quenching (NPQ) compared to PRI, also improved the accuracy of LUE estimation. Furthermore, ∆PRI was able to detect the effect of drought, which is poorly observable from PRI.

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“…The drop in pCO2 limits photosynthesis under most conditions. Many reports (1,4,5,9,19,22) indicate that gm can be low enough to substantially limit CO2 uptake, especially in leaves with low rates of photosynthesis. von Caemmerer and Evans (22) found a good correlation between the rate of photosynthetic CO2 assimilation and gm in several plants when photosynthetic capacity was varied by varying nitrogen nutrition.…”

mentioning

confidence: 99%

Estimation of Mesophyll Conductance to CO₂ Flux by Three Different Methods

Loreto¹,

Harley²,

Marco³

et al. 1992

Plant Physiol.

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374

284

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The resistance to diffusion of CO2 from the intercellular airspaces within the leaf through the mesophyll to the sites of carboxylation during photosynthesis was measured using three different techniques. The three techniques include a method based on discrimination against the heavy stable isotope of carbon, t3C, and two modeling methods. The methods rely upon different assumptions, but the estimates of mesophyll conductance were similar with all three methods. The mesophyll conductance of leaves from a number of species was about 1.4 times the stomatal conductance for CO2 diffusion determined in unstressed plants at high light. The relatively low CO2 partial pressure inside chloroplasts of plants with a low mesophyll conductance did not lead to enhanced 02 sensitivity of photosynthesis because the low conductance caused a significant drop in the chloroplast CO2 partial pressure upon switching to low 02. We found no correlation between mesophyll conductance and the ratio of intemal leaf area to leaf surface area and only a weak correlation between mesophyll conductance and the proportion of leaf volume occupied by air. Mesophyll conductance was independent of CO2 and 02 partial pressure during the measurement, indicating that a true physical parameter, independent of biochemical effects, was being measured. No evidence for CO2-accumulating mechanisms was found. Some plants, notably Citrus aurantium and Slmmondsia chinensis, had very low conductances that limit the rate of photosynthesis these plants can attain at atmospheric CO2 level.Leaves have a finite conductance for CO2 diffusion in the mesophyll (5,13

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Fluorescence Parameters Measured Concurrently with Net Photosynthesis to Investigate Chloroplastic CO2 Concentration in Leaves of Quercus ilex L.

Cited by 97 publications

References 9 publications

Effects of Growth under Elevated CO₂on the Capacity of Photosynthesis in Two Radish Cultivars Differing in Capacity of Storage Root

Effects of Growth under Elevated CO₂on the Capacity of Photosynthesis in Two Radish Cultivars Differing in Capacity of Storage Root

Potential of Photochemical Reflectance Index for Indicating Photochemistry and Light Use Efficiency in Leaves of European Beech and Norway Spruce Trees

Estimation of Mesophyll Conductance to CO₂ Flux by Three Different Methods

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Fluorescence Parameters Measured Concurrently with Net Photosynthesis to Investigate Chloroplastic CO2 Concentration in Leaves of Quercus ilex L.

Cited by 97 publications

References 9 publications

Effects of Growth under Elevated CO2on the Capacity of Photosynthesis in Two Radish Cultivars Differing in Capacity of Storage Root

Effects of Growth under Elevated CO2on the Capacity of Photosynthesis in Two Radish Cultivars Differing in Capacity of Storage Root

Potential of Photochemical Reflectance Index for Indicating Photochemistry and Light Use Efficiency in Leaves of European Beech and Norway Spruce Trees

Estimation of Mesophyll Conductance to CO2 Flux by Three Different Methods

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Effects of Growth under Elevated CO₂on the Capacity of Photosynthesis in Two Radish Cultivars Differing in Capacity of Storage Root

Effects of Growth under Elevated CO₂on the Capacity of Photosynthesis in Two Radish Cultivars Differing in Capacity of Storage Root

Estimation of Mesophyll Conductance to CO₂ Flux by Three Different Methods