Termoimaging jako nástroj ke studiu světlem-indukovaného zahřáti listů. Korelace teplotní disipace s efektivitou fotochemie fotosystému II a nefotochemických zhášením.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F08%3A00005526" target="_blank" >RIV/61989592:15310/08:00005526 - 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

Thermoimaging as a tool for studying light-induced heating of leaves. Correlation of heat dissipation with the efficiency of photosystem II photochemistry and non-photochemical quenching

Popis výsledku v původním jazyce

Thermoimaging - a highly sensitive and non-invasive method of temperature measurement - was applied to explore the role of changing photosynthetic efficiency in light-induced heating of tobacco (Nicotiana tabacum cv. Samsun) leaves. In the absence of evaporative cooling through the stomata, which was achieved by covering leaves with Vaseline, illumination with 50-1400 uMphotonsm-2 s-1 intensity of photosynthetically active radiation resulted in cca 1,5 degree C leaf temperature increase in about 2 min.The heating effect showed a non-linear correlation with the extent of nonphotochemical quenching (NPQ) resulting in higher leaf temperatures at higher NPQ values. When leaves were adapted to excessive irradiance (1300 uMphotonsm-2 s-1 for 6 h), which resulted in reduction of photosynthetic efficiency and amplification of NPQ the light-induced heating effect was enhanced. The experimental results have been explained on the basis of a simple theoretical model characterizing the balance of

Název v anglickém jazyce

Thermoimaging as a tool for studying light-induced heating of leaves. Correlation of heat dissipation with the efficiency of photosystem II photochemistry and non-photochemical quenching

Popis výsledku anglicky

Thermoimaging - a highly sensitive and non-invasive method of temperature measurement - was applied to explore the role of changing photosynthetic efficiency in light-induced heating of tobacco (Nicotiana tabacum cv. Samsun) leaves. In the absence of evaporative cooling through the stomata, which was achieved by covering leaves with Vaseline, illumination with 50-1400 uMphotonsm-2 s-1 intensity of photosynthetically active radiation resulted in cca 1,5 degree C leaf temperature increase in about 2 min.The heating effect showed a non-linear correlation with the extent of nonphotochemical quenching (NPQ) resulting in higher leaf temperatures at higher NPQ values. When leaves were adapted to excessive irradiance (1300 uMphotonsm-2 s-1 for 6 h), which resulted in reduction of photosynthetic efficiency and amplification of NPQ the light-induced heating effect was enhanced. The experimental results have been explained on the basis of a simple theoretical model characterizing the balance of

Druh

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

CEP obor

BO - Biofyzika

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2008

Kód důvěrnosti údajů

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

Název periodika

Environmental and Experimental Botany

ISSN

0098-8472

e-ISSN

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Svazek periodika

64

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

7

Strana od-do

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Kód UT WoS článku

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EID výsledku v databázi Scopus

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