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

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F67179843%3A_____%2F09%3A00333853" target="_blank" >RIV/67179843:_____/09:00333853 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

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

Popis výsledku v původním jazyce

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.

Název v anglickém jazyce

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

Popis výsledku anglicky

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.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

ED - Fyziologie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2009

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Plant Protection Science

ISSN

1212-2580

e-ISSN

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Svazek periodika

177

Číslo periodika v rámci svazku

-

Stát vydavatele periodika

CZ - Česká republika

Počet stran výsledku

8

Strana od-do

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Kód UT WoS článku

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EID výsledku v databázi Scopus

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