The chlorophyll a fluorescence induction pattern in chloroplasts upon repetitive single turnover excitations: Accumulation and function Of Q(B)-nonreducing centers

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60076658%3A12640%2F06%3A00006786" target="_blank" >RIV/60076658:12640/06:00006786 - 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

The chlorophyll a fluorescence induction pattern in chloroplasts upon repetitive single turnover excitations: Accumulation and function Of Q(B)-nonreducing centers

Original language description

The increase of chlorophyll fluorescence yield in chloroplasts in a 12.5 Hz train of saturating single turnover flashes and the kinetics of fluorescence yield decay after the last flash have been analyzed. The approximate twofold increase in F-m relativeto F-o, reached after 30-40 flashes, is associated with a proportional change in the slow (1-20 s) component of the multiphasic decay. This component reflects the accumulation of a sizeable fraction Of Q(B)-nonreducing centers. It is hypothesized that the generation of these centers occurs in association with proton transport across the thylakoid membrane. The data are quantitatively consistent with a model in which the fluorescence quenching of Q(B)-nonreducing centers is reversibly released after second excitation and electron trapping on the acceptor side of Photosystem II.

Czech name

Indukce fluorescence chlorofylu a pri serii jednoobratkovych excitaci. Akumulace a funkce Qb neredukujicich center

Czech description

Práce se zabývá analýzou kinetiky nárůstu fluorescenčního výtěžku během serie saturujících záblesků a kinetikou dohasínání fluorescence. Dokazuje, že nárůst fluorescence souvisí s nárůstem amlpitudy pomalé složky dohasínání fluorescence, která odráží akumulaci části center fotosystému II, které nemohou redukovat akceptor Qb. Ukazujeme, že koncentrace těchto center souvisí s přenosem protonů přes membránu

Type

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

CEP classification

BO - Biophysics

OECD FORD branch

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Project

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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 - Bioenergetics

ISSN

0005-2728

e-ISSN

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Volume of the periodical

1757

Issue of the periodical within the volume

3

Country of publishing house

NL - THE KINGDOM OF THE NETHERLANDS

Number of pages

9

Pages from-to

173-181

UT code for WoS article

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EID of the result in the Scopus database

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