"Regulation of the excitation energy utilization in the photosynthetic apparatus of chlorina f2 barley mutant grown under different irradiances"@en . "584100" . "3"^^ . "Acclimation of the photosynthetic apparatus of chlorophyll b-less barley mutant chlorina f2 to low light (100 mumol m(-2) s(-1); LL) and extremely high light level (1000 mumol m(-2) s(-1); HL) was examined using techniques of pigment analysis and chlorophyll a fluorescence measurements at room temperature and at 77 K. The absence of chlorophyll b in LL-grown chlorina f2 resulted in the reduction of functional antenna size of both photosystem II (by 67%) and photosystem I (by 21%). Chlorophyll fluorescence characteristics of the LL-grown mutant indicated no impairment of the utilization of absorbed light energy in photosystem 11 photochemistry. Thermal dissipation of excitation energy estimated as non-photochemical quenching of minimal fluorescence (SV0) was significantly higher as compared to the wild-type barley grown under LL. Despite impaired assembly of pigment-protein complexes, chlorina f2 was able to efficiently acclimate to HL. In comparison with chlorina f2 grown under LL, HL-grown chlorina f" . . "4"^^ . . . "10"^^ . "\u0160punda, Vladim\u00EDr" . "12640" . "Regulation of the excitation energy utilization in the photosynthetic apparatus of chlorina f2 barley mutant grown under different irradiances" . . . . "\u010Caj\u00E1nek, Martin" . "CH - \u0160v\u00FDcarsk\u00E1 konfederace" . . "Chlorina f2;chlorophyll fluorescence;Hordeum vulgare;light acclimation;non-photochemical quenching;photoprotection"@en . "Kalina, Ji\u0159\u00ED" . "Regulation of the excitation energy utilization in the photosynthetic apparatus of chlorina f2 barley mutant grown under different irradiances"@en . . . "P(LN00A141)" . . . "41-50" . . "Journal of Photochemistry and Photobiology B-Biology" . . "Regulation of the excitation energy utilization in the photosynthetic apparatus of chlorina f2 barley mutant grown under different irradiances" . "Regulace vyu\u017Eit\u00ED excita\u010Dn\u00ED energie ve fotosyntetick\u00E9m apar\u00E1tu mutantu je\u010Dmene chlorina f2 p\u011Bstovan\u00E9ho p\u0159i r\u016Fzn\u00FDch oz\u00E1\u0159enostech."@cs . "Regulace vyu\u017Eit\u00ED excita\u010Dn\u00ED energie ve fotosyntetick\u00E9m apar\u00E1tu mutantu je\u010Dmene chlorina f2 p\u011Bstovan\u00E9ho p\u0159i r\u016Fzn\u00FDch oz\u00E1\u0159enostech."@cs . . "[56D931D8AB20]" . . "75" . . "RIV/60076658:12640/04:00005617" . "Aklimace fotosyntetick\u00E9ho apar\u00E1tu mutantu je\u010Dmene chlorina f2 (s absenc\u00ED chlorofylu b) na n\u00EDzkou oz\u00E1\u0159enost (100 #mol m-2 s-1; LL) a extr\u00E9mn\u011B vysokou oz\u00E1\u0159enost (1000 #mol m-2 s-1; HL) byla studov\u00E1na pomoc\u00ED technik anal\u00FDzy pigment\u016F a m\u011B\u0159en\u00ED fluorescence chlorofylu a p\u0159i pokojov\u00E9 teplot\u011B a 77 K. Absence chlorofylu b u chlorina f2 mutantu p\u011Bstovan\u00E9ho p\u0159i LL m\u011Bla za n\u00E1sledek redukci funk\u010Dn\u00ED velikosti ant\u00E9n fotosyst\u00E9mu II (o 67%) i fotosyst\u00E9mu I (o 21%). Charakteristiky fluorescence chlorofylu u mutantu p\u011Bstovan\u00E9ho p\u0159i LL neukazovaly na omezen\u00ED vyu\u017Eit\u00ED absorbovan\u00E9 sv\u011Bteln\u00E9 energie ve fotochemii fotosyst\u00E9mu II. Teplotn\u00ED disipace excita\u010Dn\u00ED energie stanoven\u00E1 jako nefotochemick\u00E9 zh\u00E1\u0161en\u00ED minim\u00E1ln\u00ED fluorescence (SV0) byla v\u00FDznamn\u011B vy\u0161\u0161\u00ED ve srovn\u00E1n\u00ED s divok\u00FDm typem je\u010Dmene p\u011Bstovan\u00FDm p\u0159i LL. I p\u0159es zm\u011Bn\u011Bnou organizaci pigment-proteinov\u00FDch komplex\u016F byl mutant chlorina f2 schopen se \u00FA\u010Dinn\u011B aklimovat na HL."@cs . "1-2" . "Acclimation of the photosynthetic apparatus of chlorophyll b-less barley mutant chlorina f2 to low light (100 mumol m(-2) s(-1); LL) and extremely high light level (1000 mumol m(-2) s(-1); HL) was examined using techniques of pigment analysis and chlorophyll a fluorescence measurements at room temperature and at 77 K. The absence of chlorophyll b in LL-grown chlorina f2 resulted in the reduction of functional antenna size of both photosystem II (by 67%) and photosystem I (by 21%). Chlorophyll fluorescence characteristics of the LL-grown mutant indicated no impairment of the utilization of absorbed light energy in photosystem 11 photochemistry. Thermal dissipation of excitation energy estimated as non-photochemical quenching of minimal fluorescence (SV0) was significantly higher as compared to the wild-type barley grown under LL. Despite impaired assembly of pigment-protein complexes, chlorina f2 was able to efficiently acclimate to HL. In comparison with chlorina f2 grown under LL, HL-grown chlorina f"@en . "1011-1344" . . "\u0160troch, M." . "RIV/60076658:12640/04:00005617!RIV/2005/MSM/126405/N" . . . .