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Publikační činnost

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Typ záznamu * :	článek v odborném periodiku (J)
Domácí pracoviště * :	Katedra fyziky (31300)
Název * :	Regulation of the excitation energy utilization in the photosynthetic apparatus of chlorina f2 barley mutant grown under different irradiances
Citace :	Štroch, M., Čajánek, M., Kalina, J. a Špunda, V. Regulation of the excitation energy utilization in the photosynthetic apparatus of chlorina f2 barley mutant grown under different irradiances. Journal of Photochemistry and Photobiology B: Biology. 2004, roč. 75, s. 41-50. ISSN 1011-1344.

Podnázev :
Rok * :	2004
Obor * :	Biofyzika
Kód ISSN * :	1011-1344
Oficiální název periodika * :	Journal of Photochemistry and Photobiology B: Biology
Stát vydavatele periodika * :	Nizozemsko
Svazek periodika * :	Neuveden
Číslo periodika v rámci svazku * :	1-2
Číslo článku :
Ročník :	75
Počet stran článku * :	10
Strana od * :	41
Strana do * :	50
Kód UT WoS :	000222926200006
EID :
Poddruh recenzovaného článku :	Článek v impaktovaném časopise (Jimp)

Klíčová slova anglicky * :	Chlorina f2; Chlorophyll fluorescence; Hordeum vulgare; Light acclimation; Non-photochemical quenching; Photoprotection
Popis v původním jazyce * :	Acclimation of the photosynthetic apparatus of chlorophyll b-less barley mutant chlorina f2 to low light (100 umol m-2 s-1; LL) and extremely high light level (1000 umol 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 II photochemistry. Thermal dissipation of excitation energy estimated as nonphotochemical 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.
Popis v anglickém jazyce * :	Acclimation of the photosynthetic apparatus of chlorophyll b-less barley mutant chlorina f2 to low light (100 umol m-2 s-1; LL) and extremely high light level (1000 umol 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 II photochemistry. Thermal dissipation of excitation energy estimated as nonphotochemical 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.

Typ zdroje financování výsledku * :

Projekty CEP/Záměry CEZ

Seznam projektů :

ID Projektu	Název projektu

Seznam ohlasů :

Ohlas

R01:	RIV/61988987:17310/04:00000075

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