About: Impact of elevated CO2 concentration on dynamics of leaf photosynthesis in Fagus sylvatica is modulated by sky conditions

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An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	It has been suggested that atmospheric CO2 concentration and frequency of cloud cover will increase in future. It remains unclear, however, how elevated CO2 influences photosynthesis under complex clear versus cloudy sky conditions. Accordingly, diurnal changes in photosynthetic responses among beech trees grown at ambient (AC) and doubled (EC) CO2 concentrations were studied under contrasting sky conditions. EC stimulated the daily sum of fixed CO2 and light use efficiency under clear sky. Meanwhile, both these parameters were reduced under cloudy sky as compared with AC treatment. Reduction in photosynthesis rate under cloudy sky was particularly associated with EC-stimulated, xanthophyll-dependent thermal dissipation of absorbed light energy. Under clear sky, a pronounced afternoon depression of CO2 assimilation rate was found in sun-adapted leaves under EC compared with AC conditions. This was caused in particular by stomata closure mediated by vapour pressure deficit. It has been suggested that atmospheric CO2 concentration and frequency of cloud cover will increase in future. It remains unclear, however, how elevated CO2 influences photosynthesis under complex clear versus cloudy sky conditions. Accordingly, diurnal changes in photosynthetic responses among beech trees grown at ambient (AC) and doubled (EC) CO2 concentrations were studied under contrasting sky conditions. EC stimulated the daily sum of fixed CO2 and light use efficiency under clear sky. Meanwhile, both these parameters were reduced under cloudy sky as compared with AC treatment. Reduction in photosynthesis rate under cloudy sky was particularly associated with EC-stimulated, xanthophyll-dependent thermal dissipation of absorbed light energy. Under clear sky, a pronounced afternoon depression of CO2 assimilation rate was found in sun-adapted leaves under EC compared with AC conditions. This was caused in particular by stomata closure mediated by vapour pressure deficit. (en)
Title	Impact of elevated CO2 concentration on dynamics of leaf photosynthesis in Fagus sylvatica is modulated by sky conditions Impact of elevated CO2 concentration on dynamics of leaf photosynthesis in Fagus sylvatica is modulated by sky conditions (en)
skos:prefLabel	Impact of elevated CO2 concentration on dynamics of leaf photosynthesis in Fagus sylvatica is modulated by sky conditions Impact of elevated CO2 concentration on dynamics of leaf photosynthesis in Fagus sylvatica is modulated by sky conditions (en)
skos:notation	RIV/67179843:_____/14:00440777!RIV15-GA0-67179843
http://linked.open...avai/riv/aktivita	I P
http://linked.open...avai/riv/aktivity	I, P(GA13-28093S), P(GAP501/10/0340), P(LM2010007)
http://linked.open...iv/cisloPeriodika	FEB 2014
http://linked.open...vai/riv/dodaniDat	2015
http://linked.open...aciTvurceVysledku	Marek, Michal Vladimír Klem, Karel Zitová, Martina Urban, Otmar Holišová, Petra Šprtová, Mirka Špunda, Vladimír Šigut, Ladislav
http://linked.open.../riv/druhVysledku	J - Článek v odborném periodiku
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Centrum výzkumu globální změny AV ČR, v. v. i.
http://linked.open...dnocenehoVysledku	20606
http://linked.open...ai/riv/idVysledku	RIV/67179843:_____/14:00440777
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	diurnal dynamics; DEPS; european beech; fluorescence; photorespiration; stomatal conductance; xanthophylls (en)
http://linked.open.../riv/klicoveSlovo	stomatal conductance european beech fluorescence DEPS photorespiration xanthophylls diurnal dynamics
http://linked.open...odStatuVydavatele	GB - Spojené království Velké Británie a Severního Irska
http://linked.open...ontrolniKodProRIV	[6CC3AA51FB63]
http://linked.open...i/riv/nazevZdroje	Environmental Pollution
http://linked.open...in/vavai/riv/obor	GK
http://linked.open...ichTvurcuVysledku	8 (xsd:int)
http://linked.open...cetTvurcuVysledku	10 (xsd:int)
http://linked.open...vavai/riv/projekt	CzeCOS/ICOS - National Infrastructure of Carbon Observation System Impact of CO2 enrichment and irradiance on structure and performance of forest tree photosynthetic apparatus at different hierarchical levels Impact of temperature and photosynthetically active radiation on dynamics of regulation of photosystem II function in higher plants
http://linked.open...UplatneniVysledku	2014
http://linked.open...v/svazekPeriodika	185
http://linked.open...iv/tvurceVysledku	Klem, Karel Urban, Otmar Marek, Michal V. Zitová, Martina Holišová, Petra Šprtová, Mirka Grace, J. Šigut, Ladislav Špunda, Vladimír Teslová-Navrátilová, P.
http://linked.open...ain/vavai/riv/wos	000331672500034
issn	0269-7491
number of pages	10 (xsd:int)
http://bibframe.org/vocab/doi	10.1016/j.envpol.2013.11.009

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