2008
Duration of irradiation rather than quantity and frequency of high irradiance inhibits photosynthetic processes in the lichen Lasallia pustulata
BARTÁK, Miloš, Hana VRÁBLÍKOVÁ-CEMPÍRKOVÁ, Jana ŠTEPIGOVÁ, Josef HÁJEK, Peter VÁCZI et. al.Základní údaje
Originální název
Duration of irradiation rather than quantity and frequency of high irradiance inhibits photosynthetic processes in the lichen Lasallia pustulata
Název česky
Spíše délka ozářenosti než jeho množství a frekvence vysoké ozářenosti inhibuje fotosyntetické procesy lišejníku Lasallia pustulata
Název anglicky
Duration of irradiation rather than quantity and frequency of high irradiance inhibits photosynthetic processes in the lichen Lasallia pustulata
Autoři
BARTÁK, Miloš (203 Česká republika, garant), Hana VRÁBLÍKOVÁ-CEMPÍRKOVÁ (203 Česká republika), Jana ŠTEPIGOVÁ (203 Česká republika), Josef HÁJEK (203 Česká republika), Peter VÁCZI (703 Slovensko) a Kristýna VEČEŘOVÁ (203 Česká republika)
Vydání
Photosynthetica, Praha, Elsevier, 2008, 0300-3604
Další údaje
Jazyk
čeština
Typ výsledku
Článek v odborném periodiku
Obor
10600 1.6 Biological sciences
Stát vydavatele
Česká republika
Utajení
není předmětem státního či obchodního tajemství
Impakt faktor
Impact factor: 1.000
Kód RIV
RIV/00216224:14310/08:00024712
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000256340500001
Klíčová slova anglicky
chlorophyll flurescence; non-photochemical quenching; photoinhibition; photochemical quenching; xanthophyll cycle; zeaxanthin
Štítky
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 24. 6. 2009 10:56, prof. Ing. Miloš Barták, CSc.
V originále
Lichen thalli were exposed to 4 regimes differing in irradiance and duration of irradiation. Photosynthetic efficiency of thalli was monitored by chlorophyll fluorescence parameters and xanthophyll cycle analysis. Maximal quantum yield of photosystem 2 (Fv/Fm) decreased gradually with time in long-term treatment. The effect of additional short-term high irradiance (HI) treatment applied each 24 h was not significant. Nevertheless, short-term HI applied repeatedly on thalli kept in the dark led to a significant decrease of Fv/Fm. Non-photochemical quenching recorded during the long-term treatment corresponded to the content of zeaxanthin (Z). In short-term treatment, however, proportion of Z (and antheraxanthin) to total amount of xanthophyll cycle pigments recovered to the initial values every 24 h after each repeated short-term HI event in thalli kept in dark. Thus duration of irradiation rather than irradiance and frequency of HI events is important for a decrease in primary photosynthetic processes in wet thalli of Lasallia pustulata.
Anglicky
Lichen thalli were exposed to 4 regimes differing in irradiance and duration of irradiation. Photosynthetic efficiency of thalli was monitored by chlorophyll fluorescence parameters and xanthophyll cycle analysis. Maximal quantum yield of photosystem 2 (Fv/Fm) decreased gradually with time in long-term treatment. The effect of additional short-term high irradiance (HI) treatment applied each 24 h was not significant. Nevertheless, short-term HI applied repeatedly on thalli kept in the dark led to a significant decrease of Fv/Fm. Non-photochemical quenching recorded during the long-term treatment corresponded to the content of zeaxanthin (Z). In short-term treatment, however, proportion of Z (and antheraxanthin) to total amount of xanthophyll cycle pigments recovered to the initial values every 24 h after each repeated short-term HI event in thalli kept in dark. Thus duration of irradiation rather than irradiance and frequency of HI events is important for a decrease in primary photosynthetic processes in wet thalli of Lasallia pustulata.
Návaznosti
| GA522/06/0979, projekt VaV |
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| GP206/06/P209, projekt VaV |
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