| BARTÁK, Miloš, Hana VRÁBLÍKOVÁ-CEMPÍRKOVÁ, Jana ŠTEPIGOVÁ, Josef HÁJEK, Peter VÁCZI and Kristýna VEČEŘOVÁ. Duration of irradiation rather than quantity and frequency of high irradiance inhibits photosynthetic processes in the lichen Lasallia pustulata. Photosynthetica. Praha: Elsevier, 2008, vol. 46, No 2, p. 161-169. ISSN 0300-3604. |
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@article{765761,
author = {Barták, Miloš and VráblíkováandCempírková, Hana and Štepigová, Jana and Hájek, Josef and Váczi, Peter and Večeřová, Kristýna},
article_location = {Praha},
article_number = {2},
keywords = {chlorophyll flurescence; non-photochemical quenching; photoinhibition; photochemical quenching; xanthophyll cycle; zeaxanthin},
language = {cze},
issn = {0300-3604},
journal = {Photosynthetica},
title = {Duration of irradiation rather than quantity and frequency of high irradiance inhibits photosynthetic processes in the lichen Lasallia pustulata},
volume = {46},
year = {2008}
}
TY - JOUR
ID - 765761
AU - Barták, Miloš - Vráblíková-Cempírková, Hana - Štepigová, Jana - Hájek, Josef - Váczi, Peter - Večeřová, Kristýna
PY - 2008
TI - Duration of irradiation rather than quantity and frequency of high irradiance inhibits photosynthetic processes in the lichen Lasallia pustulata
JF - Photosynthetica
VL - 46
IS - 2
SP - 161-169
EP - 161-169
PB - Elsevier
SN - 03003604
KW - chlorophyll flurescence
KW - non-photochemical quenching
KW - photoinhibition
KW - photochemical quenching
KW - xanthophyll cycle
KW - zeaxanthin
N2 - 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.
ER -
BARTÁK, Miloš, Hana VRÁBLÍKOVÁ-CEMPÍRKOVÁ, Jana ŠTEPIGOVÁ, Josef HÁJEK, Peter VÁCZI and Kristýna VEČEŘOVÁ. Duration of irradiation rather than quantity and frequency of high irradiance inhibits photosynthetic processes in the lichen $<$i$>$Lasallia pustulata$<$i$>$. \textit{Photosynthetica}. Praha: Elsevier, 2008, vol.~46, No~2, p.~161-169. ISSN~0300-3604.
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