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.

Result code in 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>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

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.

Original language description

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-

Czech name

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.

Czech description

Byl studován pokles v fluorescenci mezi 0,2 - 1 s v chlorofylové fluorescenční indukci na lišejnících obsahujících řasu Trebouxia. Současným měřením fluorescenční indukce a absopčního signálu při 820 nm bylo zjištěno, že pokles ve fluorescenční indukci odáží rychlou reoxidaci fotosystému I. Naměřené data a závěry byly porovnávány a diskutovány vzhledem k výsledkům známých na vyšších rostlinách.

Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

BO - Biophysics

OECD FORD branch

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Project

<a href="/en/project/GA522%2F03%2F0754" target="_blank" >GA522/03/0754: Photoinhibition and photoprotection in lichens under extreme conditions</a><br>

Continuities

Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year

2006

Confidentiality

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

Name of the periodical

Biochimica Et Biophysica Acta

ISSN

0006-3002

e-ISSN

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Volume of the periodical

1757

Issue of the periodical within the volume

1

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

9

Pages from-to

12-20

UT code for WoS article

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EID of the result in the Scopus database

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