Photosynthetic induction in broadleaved Fagus sylvatica and coniferous Picea abies cultivated under ambient and elevated CO2 concentrations

Košvancová, Martina; Urban, Otmar; Šprtová, M.; Hrstka, Miroslav; Kalina, J.; Tomášková, Ivana; Špunda, Vladimı́r; Marek, Michal V.

doi:10.1016/j.plantsci.2009.04.005

Cited by 29 publications

(20 citation statements)

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“…Generally, the increase in CO 2 assimilation rate as a result of CO 2 elevation was often found in C 3 plants (Ceulemans andMousseau 1994, Raines 2006). Since increased CO 2 concentration results in higher photosynthesis under high-light condition through a faster photoactivation of Rubisco (Košvancová et al 2009), suppression of photorespiration and increased substrate level for photosynthesis (Dijkstra et al 1999), here in the cave we suppose that the elevated CO 2 in wet season may play a compensatory role in increasing CO 2 assimilation under light-limited habitat.…”

Section: Chl Fluorescence and Photosynthetic Pigment Traitsmentioning

confidence: 89%

Characteristics of sun- and shade-adapted populations of an endangered plant Primulina tabacum Hance

Liang¹,

Zhifang

Ren

et al. 2010

Photosynt.

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Primulina tabacum Hance is an endangered perennial herb distributed in calcium-rich and nitrogen-limited soil of the karst limestone areas in southern China. The morphological, ultrastructural, and physiological traits were determined for P. tabacum populations growing in three different environment conditions: twilight zone of a cave (site TZ, extremely low light intensity), at a cave entrance (site EZ, low light intensity), and in an open area (site OA, high light intensity). At site OA, P. tabacum plants were exposed to high light (635 μmol m -2 s -1 of mean daily photosynthetically active radiation) with drought stress, and expressed traits to minimize light capture and water loss. Compared to plants at sites EZ and TZ, those at site OA had thicker leaves with higher densities of stomata and pubescence, higher palisade/spongy ratio, higher light-saturated rate of net photosynthetic rate (P max ), higher biomass, higher non-photochemical quenching coefficient (NPQ), and higher light saturation point (LSP) but fewer grana per chloroplast and less thylakoid stacking per granum. In contrast, P. tabacum growing at the cave vicinities: EZ (mean daily irradiance 59 μmol m -2 s -1 ) and TZ (mean daily irradiance 11 μmol m -2 s -1 ) showed typical shade-adapted characteristics for optimum light capture. The presence of sun-and shade-adapted characteristics indicates that P. tabacum has different strategies to cope with different environments but whether these strategies reflect genetic selection or phenological plasticity is yet to be determined. Such variability in physiological and morphological traits is important for the survival of P. tabacum in heterogeneous light conditions.

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Section: Chl Fluorescence and Photosynthetic Pigment Traitsmentioning

confidence: 89%

Characteristics of sun- and shade-adapted populations of an endangered plant Primulina tabacum Hance

Liang¹,

Zhifang

Ren

et al. 2010

Photosynt.

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“…However, most studies on photosynthesis in response to elevated CO 2 have only focused on ''steady-state'' Communicated by Robert Pearcy. responses to constant light intensity (Ceulemans and Mousseau 1994;Urban 2003;Ainsworth and Rogers 2007). To evaluate the effect of temporally changing light on photosynthesis in high CO 2 environments, experimental studies (Knapp et al 1994;Naumburg and Ellsworth 2000;Leakey et al 2002Leakey et al , 2005Košvancová et al 2009) and theoretical models (Naumburg et al 2001) have tried to characterize the dynamics of photosynthesis in plants grown under high CO 2 environments. The limitations to CO 2 uptake during photosynthetic induction seem to decrease under high CO 2 environments (Naumburg and Ellsworth 2000;Košvancová et al 2009).…”

Section: Introductionmentioning

confidence: 99%

“…To evaluate the effect of temporally changing light on photosynthesis in high CO 2 environments, experimental studies (Knapp et al 1994;Naumburg and Ellsworth 2000;Leakey et al 2002Leakey et al , 2005Košvancová et al 2009) and theoretical models (Naumburg et al 2001) have tried to characterize the dynamics of photosynthesis in plants grown under high CO 2 environments. The limitations to CO 2 uptake during photosynthetic induction seem to decrease under high CO 2 environments (Naumburg and Ellsworth 2000;Košvancová et al 2009). However, high CO 2 effects on photosynthetic induction have only been observed in a few species.…”

Section: Introductionmentioning

confidence: 99%

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Elevated CO2 differentially affects photosynthetic induction response in two Populus species with different stomatal behavior

Tomimatsu

Tang

2012

Oecologia

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To understand dynamic photosynthetic characteristics in response to fluctuating light under a high CO(2) environment, we examined photosynthetic induction in two poplar genotypes from two species, Populus koreana 9 trichocarpa cv. Peace and Populus euramericana cv. I-55, respectively. Stomata of cv. Peace barely respond to changes in photosynthetic photon flux density (PFD), whereas those of cv. I-55 show a normal response to variations in PFD at ambient CO(2). The plants were grown under three CO2 regimes (380, 700, and 1,020 μmol CO(2) mol(-1) in air) for approximately 2 months. CO2 gas exchange was measured in situ in the three CO2 regimes under a sudden PFD increase from 20 to 800 μmol m(-2) s(-1). In both genotypes, plants grown under higher CO(2) conditions had a higher photosynthetic induction state, shorter induction time, and reduced induction limitation to photosynthetic carbon gain. Plants of cv. I-55 showed a much larger increase in induction state and decrease in induction time under high CO(2) regimes than did plants of cv. Peace. These showed that, throughout the whole induction process, genotype cv. I-55 had a much smaller reduction of leaf carbon gain under the two high CO(2) regimes than under the ambient CO(2) regime, while the high CO(2) effect was smaller in genotype cv. Peace. The results suggest that a high CO(2) environment can reduce both biochemical and stomatal limitations of leaf carbon gain during the photosynthetic induction process, and that a rapid stomatal response can further enhance the high CO(2) effect.

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“…An additional hypothesis relates to the blue light component of the in-canopy light climate. Stomata are known to be especially responsive to light between 430 and 470 nm (Raschke 1975;Morison and Jarvis 1983;Karlsson 1986;Briggs and Christie 2002), and there are also reports of a direct blue light effect on the induction kinetics of photosynthesis (Košvancová-Zitová et al 2009b), and on the electron transport through thylakoid membranes (Portis et al 2008;Košvancová et al 2009a). Blue light enrichment inside coniferous canopies has been observed under cloudy skies (Urban et al 2007), and so it is not unreasonable to suppose that part of the enhancement of photosynthesis under cloudy and overcast Communicated by Nina Buchmann. conditions is caused by blue light enrichment.…”

Section: Introductionmentioning

confidence: 99%

Carbon dioxide exchange and canopy conductance of two coniferous forests under various sky conditions

Dengel

Grace

2010

Oecologia

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Sky conditions play an important role in the Earth's climate system and CO(2) uptake by plants. We used eddy covariance and meteorological data, including global and diffuse photosynthetic photon flux density (PPFD), recorded over the 2008 and 2009 growing season at two Sitka spruce [Picea sitchensis (Bong.) Carr.] forest sites in northern Britain, in order to establish relationships between physiological properties under diverse sky conditions, i.e. (1) sunny, (2) cloudy, and (3) overcast, and several canopy activity-related properties. These properties are: (1) response to PPFD, (2) photosynthetic light use efficiency, and (3) canopy stomatal conductance. We found that Sitka spruce forests utilise PPFD in a more efficient way when solar radiation is dominated by diffuse radiation. Furthermore, our results show that diffuse radiation enhances canopy stomatal conductance, an effect which may be the result of both blue light enrichment within the canopy and the reduction in vapour pressure deficit during cloudy and overcast weather. Diffuse radiation does not only influence short-term (hourly, daily, monthly) canopy activity but also long-term forest growth.

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Photosynthetic induction in broadleaved Fagus sylvatica and coniferous Picea abies cultivated under ambient and elevated CO2 concentrations

Cited by 29 publications

References 42 publications

Characteristics of sun- and shade-adapted populations of an endangered plant Primulina tabacum Hance

Characteristics of sun- and shade-adapted populations of an endangered plant Primulina tabacum Hance

Elevated CO2 differentially affects photosynthetic induction response in two Populus species with different stomatal behavior

Carbon dioxide exchange and canopy conductance of two coniferous forests under various sky conditions

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