Počet záznamů: 1

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

SYSNO ASEP	0333853
Druh ASEP	J - Článek v odborném periodiku
Zařazení RIV	J - Článek v odborném periodiku
Poddruh J	Ostatní články
Název	Photosynthetic induction in broadleaved Fagus sylvatica and coniferous Picea abies cultivated under ambient and elevated CO2 concentrations
Tvůrce(i)	Košvancová, Martina (UEK-B) Urban, Otmar (UEK-B)_{RID, ORCID, SAI} Šprtová, Miroslava (UEK-B)_{RID, SAI} Hrstka, M. (CZ) Kalina, J. (CZ) Tomášková, Ivana (UEK-B) Špunda, V. (CZ) Marek, Michal V. (UEK-B)_{RID, ORCID, SAI}
Celkový počet autorů	8
Zdroj.dok.	Plant Protection Science. - : Czech Academy of Agricultural Sciences - ISSN 1212-2580 Roč. 177, - (2009), s. 123-130
Poč.str.	8 s.
Jazyk dok.	eng - angličtina
Země vyd.	CZ - Česká republika
Klíč. slova	gas exchange ; photosynthetic limitations ; photosynthetic down-regulation ; Rubisco specific activity ; stomatal conductance
Vědní obor RIV	ED - Fyziologie
CEP	OC08022 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy
	IAA600870701 GA AV ČR - Akademie věd
CEZ	AV0Z60870520 - UEK-B (2005-2011)
Anotace	The hypothesis that elevated CO2 leads to a faster induction of photosynthesis was tested using seedlings of Fagus sylvatica and Picea abies exposed to ambient (385 ppm; AC) and elevated CO2 (700 ppm; EC). The presumptions were: EC (1) reduces the content of Rubisco in leaves, (2) decreases stomatal conductance, and (3) has no effect on the rates of stomatal opening and Rubisco activation upon illumination. Reductions of Rubisco and light-saturated stomatal conductance were observed in both EC treated tree species; however, the presumption of constant induction rates was not confirmed. Thus, EC treatment led to the stimulation of the initial phase of induction demonstrated by the higher induction state 60s after leaf illumination. In contrast, the stimulation of the secondary phase of induction, reflecting stomatal opening and described by the time required to reach maximum steady-state photosynthesis, was only 5-15% in F. sylvatica and 21-28% in P. abies.
Pracoviště	Ústav výzkumu globální změny
Kontakt	Nikola Šviková, svikova.n@czechglobe.cz, Tel.: 511 192 268
Rok sběru	2010

Počet záznamů: 1