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PubMed

Záznam pochází z PubMed

On the origin of the slow M-T chlorophyll a fluorescence decline in cyanobacteria: interplay of short-term light-responses

Bernát, Gábor
Autor Bernát, Gábor Laboratory of Photosynthesis, Institute of Microbiology, Academy of Sciences, Opatovicky mlyn, 379 81, Třeboň, Czech Republic. bernat@alga.cz
Steinbach, Gábor
Autor Steinbach, Gábor Laboratory of Photosynthesis, Institute of Microbiology, Academy of Sciences, Opatovicky mlyn, 379 81, Třeboň, Czech Republic Institute of Biophysics, Biological Research Centre, Hungarian Academy of Sciences, Temesvári krt. 62, Szeged, 6726, Hungary
Kaňa, Radek
Autor Kaňa, Radek Laboratory of Photosynthesis, Institute of Microbiology, Academy of Sciences, Opatovicky mlyn, 379 81, Třeboň, Czech Republic
Govindjee
Autor Govindjee Department of Biochemistry and Department of Plant Biology, University of Illinois at Urbana-Champaign, Urbana, IL, 61801-3707, USA
Misra, Amarendra N
Autor Misra, Amarendra N Centre for Life Sciences, Central University of Jharkand, Ranchi, 835205, Jharkand, India Khallikote Cluster University, Berhampur, 76001, Odisha, India
Prašil, Ondřej
Autor Prašil, Ondřej Laboratory of Photosynthesis, Institute of Microbiology, Academy of Sciences, Opatovicky mlyn, 379 81, Třeboň, Czech Republic Faculty of Sciences, University of South Bohemia in České Budějovice, 37005, Ceske Budejovice, Czech Republic

Photosynthesis research. 2018 May ; 136 (2) : 183-198. [epub] 20171031

Photosynth Res
ISSN 1573-5079 | 0166-8595
Zdroj

Jazyk angličtina Země Nizozemsko Médium print-electronic

Typ dokumentu časopisecké články

Perzistentní odkaz https://www.medvik.cz/link/pmid29090427

Grantová podpora
CZ.1.07/2.3.00/20.0203 Ministerstvo Školství, Mládeže a Tělovýchovy
NPU I, LO 1416 Ministerstvo Školství, Mládeže a Tělovýchovy

PubMed 29090427
DOI 10.1007/s11120-017-0458-8
PII: 10.1007/s11120-017-0458-8
Knihovny.cz E-zdroje

Klíčová slova
Fluorescence quenching, Interplay of regulatory processes, Kautsky effect, Photoprotection, Synechocystis, The M–T phase,
MeSH
bakteriální proteiny genetika metabolismus MeSH
chlorofyl a MeSH
chlorofyl chemie genetika metabolismus MeSH
diuron chemie MeSH
fluorescence MeSH
fluorescenční spektrometrie MeSH
fykobilizomy genetika metabolismus MeSH
kyanid draselný chemie MeSH
luminiscenční měření MeSH
světlo MeSH
Synechocystis chemie genetika metabolismus MeSH
teplota MeSH
Publikační typ
časopisecké články MeSH
Názvy látek
bakteriální proteiny MeSH
chlorofyl a MeSH
chlorofyl MeSH
diuron MeSH
fykobilizomy MeSH
kyanid draselný MeSH
orange carotenoid protein, Synechocystis MeSH Prohlížeč

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 (λ = 593 nm) actinic light, with those of mutants, ΔapcD and ΔOCP, 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.

Centre for Life Sciences Central University of Jharkand Ranchi 835205 Jharkand India

Department of Biochemistry and Department of Plant Biology University of Illinois at Urbana Champaign Urbana IL 61801 3707 USA

Faculty of Sciences University of South Bohemia in České Budějovice 37005 Ceske Budejovice Czech Republic

Institute of Biophysics Biological Research Centre Hungarian Academy of Sciences Temesvári krt 62 Szeged 6726 Hungary

Khallikote Cluster University Berhampur 76001 Odisha India

Laboratory of Photosynthesis Institute of Microbiology Academy of Sciences Opatovicky mlyn 379 81 Třeboň Czech Republic

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