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@article{1429056,
author = {Barták, Miloš and Pláteníková, Eva and Carreras, Hebe and Hájek, Josef and Morkusová, Jana and Mateos, Ana Carolina and Marečková, Michaela},
article_location = {Germany},
article_number = {5},
doi = {http://dx.doi.org/10.1111/plb.12855},
keywords = {Absorbance; chlorophyll parameters; lichens; UV spectra; UV-resistance},
language = {eng},
issn = {1435-8603},
journal = {Plant Biology},
title = {Effect of UV-B radiation on the content of UV-B absorbing compounds and photosynthetic parameters in Parmotrema austrosinense from two contrasting habitats},
url = {https://onlinelibrary.wiley.com/doi/epdf/10.1111/plb.12855},
volume = {20},
year = {2018}
}
TY - JOUR
ID - 1429056
AU - Barták, Miloš - Pláteníková, Eva - Carreras, Hebe - Hájek, Josef - Morkusová, Jana - Mateos, Ana Carolina - Marečková, Michaela
PY - 2018
TI - Effect of UV-B radiation on the content of UV-B absorbing compounds and photosynthetic parameters in Parmotrema austrosinense from two contrasting habitats
JF - Plant Biology
VL - 20
IS - 5
SP - 808-816
EP - 808-816
PB - Wiley
SN - 14358603
KW - Absorbance
KW - chlorophyll parameters
KW - lichens
KW - UV spectra
KW - UV-resistance
UR - https://onlinelibrary.wiley.com/doi/epdf/10.1111/plb.12855
L2 - https://onlinelibrary.wiley.com/doi/epdf/10.1111/plb.12855
N2 - Abstract We studied the resistance of Parmotrema austrosinense to UV-B stress. We focused on the effects of a high dose UV-B radiation on the content of chlorophylls, carotenoids and UV-B screening compounds. Photosynthetic parameters were measured by chlorophyll fluorescence (potential and effective quantum yields, photochemical and non-photochemical quenching) and evaluated in control and UV-B-treated lichens. Lichens from two different locations in Cordoba, Argentina, were selected: (i) high altitude and dry plots at (Los Gigantes) and (ii) lowland high salinity plots (Salinas Grandes). UV-B treatment led to a decrease in the content of photosynthetic pigments and UV-B screens (absorbance decrease in 220-350 nm) in the samples from Salinas Grandes, while in Los Gigantes samples, an increase in UV-B screen content was observed. Chlorophyll fluorescence parameters showed a UV-B-induced decline in FV /FM , Phi_PSII and qP indicating limitation of primary photosynthetic processes in photosystem II (PSII) of symbiotic alga, more pronounced in Salinas Grandes samples. Protective mechanism of PSII were activated by the UV-B treatment to a higher extent in samples from Salinas Grandes (NPQ 0.48) than in Los Gigantes samples (NPQ 0.26). We concluded that site-related characteristics, and in particular different UV-B radiation regimen, had a strong effect on resistance of the photosynthetic apparatus of P. austrosinense to UV-B radiation.
ER -
BARTÁK, Miloš, Eva PLÁTENÍKOVÁ, Hebe CARRERAS, Josef HÁJEK, Jana MORKUSOVÁ, Ana Carolina MATEOS a Michaela MAREČKOVÁ. Effect of UV-B radiation on the content of UV-B absorbing compounds and photosynthetic parameters in Parmotrema austrosinense from two contrasting habitats. \textit{Plant Biology}. Germany: Wiley, 2018, roč.~20, č.~5, s.~808-816. ISSN~1435-8603. Dostupné z: https://dx.doi.org/10.1111/plb.12855.
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