Dynamika xantofylového cyklu a nezářivé disipace absorbované světelné energie během vystavení smrku ztepilého vysoké ozářenosti

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61988987%3A17310%2F08%3AA0800KR8" target="_blank" >RIV/61988987:17310/08:A0800KR8 - 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

Dynamics of the xanthophyll cycle and non-radiative dissipation of absorbed light energy during exposure of Norway spruce to high irradiance

Popis výsledku v původním jazyce

The response of Norway spruce saplings (Picea abies [L.] Karst.) was monitored continuously during short-term exposure (10 days) to high irradiance (HI; 1000 umol m-2 s-1). As compared to plants acclimated to low irradiance (100 umol m-2 s-1), plants after HI exposure were characterized by a significantly reduced CO2 assimilation rate throughout the whole light response curve. Pigment contents varied only slightly during HI exposure, but a rapid and strong response was observed in the xanthophyll cycleactivity, particularly within the first three days of the HI treatment. Both violaxanthin convertibility under HI and the amount of zeaxanthin pool sustained in darkness increased pronouncedly under HI conditions. These changes were accompanied by an enhanced non-radiative dissipation of absorbed light energy (NRD) and the acceleration of induction of both NRD and de-epoxidation of the xanthophyll cycle pigments.

Název v anglickém jazyce

Dynamics of the xanthophyll cycle and non-radiative dissipation of absorbed light energy during exposure of Norway spruce to high irradiance

Popis výsledku anglicky

The response of Norway spruce saplings (Picea abies [L.] Karst.) was monitored continuously during short-term exposure (10 days) to high irradiance (HI; 1000 umol m-2 s-1). As compared to plants acclimated to low irradiance (100 umol m-2 s-1), plants after HI exposure were characterized by a significantly reduced CO2 assimilation rate throughout the whole light response curve. Pigment contents varied only slightly during HI exposure, but a rapid and strong response was observed in the xanthophyll cycleactivity, particularly within the first three days of the HI treatment. Both violaxanthin convertibility under HI and the amount of zeaxanthin pool sustained in darkness increased pronouncedly under HI conditions. These changes were accompanied by an enhanced non-radiative dissipation of absorbed light energy (NRD) and the acceleration of induction of both NRD and de-epoxidation of the xanthophyll cycle pigments.

Druh

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

CEP obor

BO - Biofyzika

OECD FORD obor

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Projekt

<a href="/cs/project/2B06068" target="_blank" >2B06068: Ocenění a interpretace odezvy ekosystémů na environmentální zátěž v ČR.</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2008

Kód důvěrnosti údajů

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

Název periodika

Journal of Plant Physiology

ISSN

0176-1617

e-ISSN

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Svazek periodika

165

Číslo periodika v rámci svazku

6

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

11

Strana od-do

612-622

Kód UT WoS článku

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EID výsledku v databázi Scopus

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