Photosynthetic responses of apricot (Prunus armeniaca L.) to photosynthetic photon flux density, leaf temperature, and CO&lt;sub&gt;2&lt;/sub&gt; concentration

Wang, F. L.; Wang, H.; Wang, Gan

doi:10.1007/s11099-007-0009-1

Cited by 8 publications

(3 citation statements)

References 21 publications

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“…The higher SD and SI could have given rise to a higher intercellular CO 2 which could explain the higher P max . This phenomenon was similar to that observed by Wang et al (2007a) for apricot, where the cultivars exhibited different adaptation abilities to low irradiance probably due to the genetic background effect.…”

Section: Parameterssupporting

confidence: 88%

Stomatal development and associated photosynthetic performance of capsicum in response to differential light availabilities

Fu¹,

Zhao²,

Wang³

et al. 2010

Photosynt.

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The mechanisms of capsicum growth in response to differential light availabilities are still not well elucidated. Hereby, we analyzed differential light availabilities on the relationship between stomatal characters and leaf growth, as well as photosynthetic performance. We used either 450-500 μmol m -2 s -1 as high light (HL) or 80-100 μmol m -2 s -1 as low light (LL) as treatments for two different cultivars. Our results showed that the stomatal density (SD) and stomatal index (SI) increased along with the leaf area expansion until the peak of the correlation curve, and then decreased. SD and SI were lower under the LL condition after three days of leaf expansion. For both cultivars, downregulation of photosynthesis and electron transport components was observed in LL-grown plants as indicated by lower light-and CO 2 -saturated photosynthetic rate (P max and RuBP max ), quantum efficiency of photosystem II (PSII) photochemistry (Φ PSII ), electron transport rate (ETR) and photochemical quenching of fluorescence (q p ). The observed inhibition of the photosynthesis could be explained by the decrease of SD, SI, Rubisco content and by the changes of the chloroplast. The low light resulted in lower total biomass, root/shoot ratio, and the thickness of the leaf decreased. However, the specific leaf area (SLA) and the content of leaf pigments were higher in LL-treatment. Variations in the photosynthetic characteristics of capsicum grown under different light conditions reflected the physiological adaptations to the changing light environments.

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Section: Parameterssupporting

confidence: 88%

Stomatal development and associated photosynthetic performance of capsicum in response to differential light availabilities

Fu¹,

Zhao²,

Wang³

et al. 2010

Photosynt.

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“…For sun leaves, high aerosol loading resulted in a rapid decline in PAR received by the leaf surface, thereby reducing T leaf (Figure 6a,c). Previous works suggested that stomata have a slow response to environmental stimuli when leaf temperature is between 35 and 50°C (Ameye et al., 2012; Wang et al., 2007; Weston & Bauerle, 2007). In our study, we found that when the temperature was higher than 35.5℃, sun leaf photosynthesis began to decline (Figure ).…”

Section: Discussionmentioning

confidence: 99%

Field evidence reveals conservative water use of poplar saplings under high aerosol conditions

Wang

et al. 2021

Journal of Ecology

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Anthropogenic aerosols could alter multiple meteorological processes such as radiation regime and air temperature, thereby modifying plant transpiration. However, the lack of field observations at leaf and plant level hinders our ability to understand how aerosols could affect plant water use. Aerosol concentrations in northern China fluctuate periodically over a wide range. Taking advantage of this unique natural experiment opportunity, we conducted a series of physiological and environmental measurements at different times of the day to explore diurnal aerosols' effect on leaf transpiration and sap flow of planted poplar saplings (Populus × canadensis Moench). We found that high aerosol concentrations suppressed sun leaf transpiration by reducing leaf‐to‐air vapour pressure deficit (VPDleaf), while had no effect on shade leaf transpiration mainly because the negative effect of reduced VPDleaf on transpiration offset the positive effects of the increased stomatal conductance (gs). As aerosol concentration increased, the gs of both sun and shade leaves decreased more rapidly with an increase in VPDleaf, which caused their transpiration rates to become less sensitive to VPDleaf. Similarly, aerosols reduced sap flow density and its sensitivity to VPD. Synthesis. Our study provided observational evidence on aerosols' effects on plant transpiration at the leaf and canopy scales. The reduced transpiration and stronger stomatal control indicated that plant water use becomes more conservative under elevated aerosol concentrations.

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“…The most reported phenomenon induced by high CO 2 is an increase in the photosynthetic carbon fixation rates. Plant growth and development are intensely affected by photosynthesis, with the carbon assimilates necessary for yield production ultimately produced via photosynthesis (Wang et al, 2007). Thus, a rise in the photosynthetic rate increases plant growth and development through an increment in carbohydrates production and in the water use efficiency (WUE) (Chaves, 1994).…”

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confidence: 99%

Growth, Plant Quality, and Survival of Sweet Cherry (Prunus avium L.) Seedlings are Enhanced by CO2 Enrichment

Pérez‐Jiménez

Bayo-Canha

López‐Ortega

et al. 2017

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Enrichment with CO2 and a commercial mix of plant growth regulators were tested to improve the plant quality and survival of pregerminated cherry tree seedlings. Pregerminated seeds were transferred from a cold chamber to a climatic chamber where the CO2 was set at 800 µmol·mol−1 CO2 or at the ambient CO2 concentration. Also, half of the plants were sprayed with the mix of plant growth regulators and disposed randomly. The experiment lasted 18 days and physiological measurements, such as plant physiological status and growth, number of leaves, net CO2 assimilation (ACO2), internal CO2, stomatal conductance, and transpiration, were taken every 4 days. Also, at the end of the experiment, other parameters—such as total leaf area, photosynthetic pigments, soluble sugars, and starch—were recorded or quantified. During the experiment, plants cultured under CO2 enrichment exhibited a rapid increase in their photosynthetic rates, height, and leaf number; the commercial mix also increased plant height but inhibited leaf expansion and growth. At the end of the experiment, the amounts of starch and soluble sugars had increased in the plants grown under elevated CO2, compared with those plants grown in control conditions or with the commercial mix. Thus, culture at elevated CO2 achieved higher percentages of plant survival and of plants in active growth. We suggest that CO2 plays an important role—by increasing ACO2, water use efficiency, soluble sugars, and starch—which results in plants that are physiologically more prepared for transfer to the field.

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Photosynthetic responses of apricot (Prunus armeniaca L.) to photosynthetic photon flux density, leaf temperature, and CO<sub>2</sub> concentration

Cited by 8 publications

References 21 publications

Stomatal development and associated photosynthetic performance of capsicum in response to differential light availabilities

Stomatal development and associated photosynthetic performance of capsicum in response to differential light availabilities

Field evidence reveals conservative water use of poplar saplings under high aerosol conditions

Growth, Plant Quality, and Survival of Sweet Cherry (Prunus avium L.) Seedlings are Enhanced by CO2 Enrichment

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