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Control of the maximal chlorophyll fluorescence yield by the Q(B) binding site
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SYSNO ASEP 0489336 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Control of the maximal chlorophyll fluorescence yield by the Q(B) binding site Tvůrce(i) Prášil, Ondřej (MBU-M) RID, ORCID
Kolber, Z. S. (US)
Falkowski, P. G. (US)Zdroj.dok. Photosynthetica. - : Ústav experimentální botaniky AV ČR, v. v. i. - ISSN 0300-3604
Roč. 56, č. 1 (2018), s. 150-162Poč.str. 13 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova conformational change ; electron transport ; photosystem II Vědní obor RIV EE - Mikrobiologie, virologie Obor OECD Microbiology CEP LO1416 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora MBU-M - RVO:61388971 UT WOS 000430309200013 EID SCOPUS 85040336704 DOI 10.1007/s11099-018-0768-x Anotace Differences in maximal yields of chlorophyll variable fluorescence (F-m) induced by single turnover (ST) and multiple turnover (MT) excitation are as great as 40%. Using mutants of Chlamydomonas reinhardtii we investigated potential mechanisms controlling F-m above and beyond the Q(A) redox level. F-m was low when the Q(B) binding site was occupied by PQ and high when the Q(B) binding site was empty or occupied by a PSII herbicide. Furthermore, in mutants with impaired rates of plastoquinol reoxidation, F-m was reached rapidly during MT excitation. In PSII particles with no mobile PQ pool, F-m was virtually identical to that obtained in the presence of PSII herbicides. We have developed a model to account for the variations in maximal fluorescence yields based on the occupancy of the Q(B) binding site. The model predicts that the variations in maximal fluorescence yields are caused by the capacity of secondary electron acceptors to reoxidize Q(A)(-). Pracoviště Mikrobiologický ústav Kontakt Eliška Spurná, eliska.spurna@biomed.cas.cz, Tel.: 241 062 231 Rok sběru 2019
Počet záznamů: 1