Pokles fluorescence mezi 0,2 - 1 s v chlorofylové fluorescenční indukci na lišejnících obsahujících řasu Trebouxia odáží rychlou reoxidaci fotosystému I. Porovnání s vyššími rostlinami.

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989592%3A15310%2F06%3A00002611" target="_blank" >RIV/61989592:15310/06:00002611 - 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

A dip in the chlorophyll fluorescence induction at 0.2 - 2 s in Trebouxia-possessing lichens reflects a fast reoxidation of photosystem I. A comparison with higher plants.

Popis výsledku v původním jazyce

An unusual dip (compared to higher plant behaviour under comparable light conditions) in chlorophyll fluorescence induction (FI) at about 0.2 - 2 s was observed for thalli of several lichen species having Trebouxia species (the most common symbiotic green algae) as their native photobionts and for Trebouxia species cultured separately in nutrient solution. This dip appears after the usual O(J)IP transient at a wide range of excitation light intensities (100 - 1800 (umol photons m-2 s-1). Simultaneous measurements of FI and 820-nm transmission kinetics (I820) with lichen thalli showed that the decreasing part of the fluorescence dip (0.2 - 0.4 s) is accompanied by a decrease of I820, i.e. by a reoxidation of electron carriers at photosystem I (PSI), while the subsequent increasing part (0.4 - 2 s) of the dip is not paralleled by the change in I820. These results were compared with that measured with pea leaves - representatives of higher plants. In pea, PSI started to reoxidize after 2-

Název v anglickém jazyce

A dip in the chlorophyll fluorescence induction at 0.2 - 2 s in Trebouxia-possessing lichens reflects a fast reoxidation of photosystem I. A comparison with higher plants.

Popis výsledku anglicky

An unusual dip (compared to higher plant behaviour under comparable light conditions) in chlorophyll fluorescence induction (FI) at about 0.2 - 2 s was observed for thalli of several lichen species having Trebouxia species (the most common symbiotic green algae) as their native photobionts and for Trebouxia species cultured separately in nutrient solution. This dip appears after the usual O(J)IP transient at a wide range of excitation light intensities (100 - 1800 (umol photons m-2 s-1). Simultaneous measurements of FI and 820-nm transmission kinetics (I820) with lichen thalli showed that the decreasing part of the fluorescence dip (0.2 - 0.4 s) is accompanied by a decrease of I820, i.e. by a reoxidation of electron carriers at photosystem I (PSI), while the subsequent increasing part (0.4 - 2 s) of the dip is not paralleled by the change in I820. These results were compared with that measured with pea leaves - representatives of higher plants. In pea, PSI started to reoxidize after 2-

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/GA522%2F03%2F0754" target="_blank" >GA522/03/0754: Fotoinhibice a fotoochrana u lišejníků v extrémních podmínkách</a><br>

Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2006

Kód důvěrnosti údajů

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

Název periodika

Biochimica Et Biophysica Acta

ISSN

0006-3002

e-ISSN

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Svazek periodika

1757

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

12-20

Kód UT WoS článku

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EID výsledku v databázi Scopus

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