Počet záznamů: 1
On the origin of the slow M-T chlorophyll a fluorescence decline in cyanobacteria: interplay of short-term light-responses
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SYSNO ASEP 0490106 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název On the origin of the slow M-T chlorophyll a fluorescence decline in cyanobacteria: interplay of short-term light-responses Tvůrce(i) Bernát, Gábor (MBU-M) ORCID
Steinbach, Gabor (MBU-M)
Kaňa, Radek (MBU-M) RID, ORCID
Govindjee, A. (US)
Misra, A.N. (IN)
Prášil, Ondřej (MBU-M) RID, ORCIDZdroj.dok. Photosynthesis Research. - : Springer - ISSN 0166-8595
Roč. 136, č. 2 (2018), s. 183-198Poč.str. 16 s. Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova Synechocystis ; Fluorescence quenching ; Kautsky effect Vědní obor RIV EE - Mikrobiologie, virologie Obor OECD Microbiology CEP EE2.3.20.0203 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy GA16-10088S GA ČR - Grantová agentura ČR LO1416 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy ED2.1.00/19.0392 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora MBU-M - RVO:61388971 UT WOS 000429811600006 DOI 10.1007/s11120-017-0458-8 Anotace The slow kinetic phases of the chlorophyll a fluorescence transient (induction) are valuable tools in studying dynamic regulation of light harvesting, light energy distribution between photosystems, and heat dissipation in photosynthetic organisms. However, the origin of these phases are not yet fully understood. This is especially true in the case of prokaryotic oxygenic photoautotrophs, the cyanobacteria. To understand the origin of the slowest (tens of minutes) kinetic phase, the M-T fluorescence decline, in the context of light acclimation of these globally important microorganisms, we have compared spectrally resolved fluorescence induction data from the wild type Synechocystis sp. PCC 6803 cells, using orange (lambda = 593 nm) actinic light, with those of mutants, Delta apcD and Delta OCP, that are unable to perform either state transition or fluorescence quenching by orange carotenoid protein (OCP), respectively. Our results suggest a multiple origin of the M-T decline and reveal a complex interplay of various known regulatory processes in maintaining the redox homeostasis of a cyanobacterial cell. In addition, they lead us to suggest that a new type of regulatory process, operating on the timescale of minutes to hours, is involved in dissipating excess light energy in cyanobacteria. Pracoviště Mikrobiologický ústav Kontakt Eliška Spurná, eliska.spurna@biomed.cas.cz, Tel.: 241 062 231 Rok sběru 2019
Počet záznamů: 1