Spectral characteristic of fluorescence induction in a model cyanobacterium, Synechococcus sp. (PCC 7942)

0334596 - MBÚ 2010 RIV NL eng J - Journal Article
Kaňa, Radek - Prášil, Ondřej - Komárek, Ondřej - Papageorgiou, G. C. - Govindjee, G.
Spectral characteristic of fluorescence induction in a model cyanobacterium, Synechococcus sp. (PCC 7942).
Biochimica Et Biophysica Acta-Bioenergetics. Roč. 1787, č. 10 (2009), s. 1170-1178. ISSN 0005-2728. E-ISSN 1879-2650
R&D Projects: GA ČR GP206/09/P094; GA ČR GA206/07/0917; GA AV ČR IAA608170603
Institutional research plan: CEZ:AV0Z50200510; CEZ:AV0Z60870520
Keywords : fluorescence induction * cyanobacterium * PCC 7942
Subject RIV: EE - Microbiology, Virology
Impact factor: 3.688, year: 2009

Newly developed method allowed as to measure spectral characteristic of fluorescence induction for a model organism, Synechococcus sp. (PCC 7942). Base on this new experimental approach, we have found that: (i) the main chlorophyll (Chl) a emission band around 685 nm (Photosystem (PS) II emission) exhibits typical fast (OPS) and slow (SMT) FI kinetics with both orange (622 nm) and blue (464 nm) excitation. (ii) Similar kinetics are exhibited for its far-red emission satellite band centered at 745 nm, where the PS II contribution predominates. (iii) A significant OPS-SMT-type kinetics of C-phycocyanin emission at 650 nm are observed with the blue light excitation. The induction of F650 was not caused by an admixture of the F685 fluorescence and thus our data show light-inducible and dark-reversible changes of phycobilin fluorescence in vivo
Permanent Link: http://hdl.handle.net/11104/0179291