On the chlorophyll a fluorescence yield in chloroplasts upon excitation wtih twin turnover flashes (TTF) and high frequency flash trains

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61388971%3A_____%2F07%3A00090151" target="_blank" >RIV/61388971:_____/07:00090151 - 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
On the chlorophyll a fluorescence yield in chloroplasts upon excitation wtih twin turnover flashes (TTF) and high frequency flash trains
Original language description
Chlorophyll fluorescence is routinely taken as a quantifiable measure of the redox state of the primary quinone acceptor QA of PSII. The variable fluorescence in thylakoids increases in a single turnover flash (STF) from its low dark level Fo towards a maximum FmSTF when QA becomes reduced. We found, using twin single turnover flashes (TTFs) that the fluorescence increase induced by the first twin-partner is followed by a 20 ? 30% increase when the second partner is applied within 20 to 100 ?s after thefirst one. The amplitude of the twin response shows a period-of-four oscillation associated with the 4-step oxidation of water in the Kok cycle (S states) and originates from two different trapped states with a life time of 0.2 to 0.4 and 2 to 5 ms, respectively
Czech name
Výtěžek fluorescence chlorofylu po excitaci mnohoobrátkovými záblesky a při použití serie záblesků
Czech description
Práce se zabývá interpretací variabilní fluorescence chlorofylu, která se rutinně používá při studiu fotosyntézy. Nově popisuje možný mechanismus nárůstu variabilní fluorescence během serie krátkých záblesků a to pomocí aktivity tzv. Qb neredukujících center Fotosystému II

Type
J<sub>x</sub> - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)
CEP classification
EE - Microbiology, virology
OECD FORD branch
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Project
<a href="/en/project/GA206%2F05%2F0335" target="_blank" >GA206/05/0335: Physiological basis for covariations in light-limited and light-saturated photosynthesis in phytoplankton</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2007
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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