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@article{1354826,
author = {Marečková, Michaela and Barták, Miloš},
article_number = {1},
doi = {http://dx.doi.org/10.5817/CPR2016-1-6},
keywords = {photosynthetic processes; polyphasic kinetics; chlorophyll fluorescence parameters; James Ross Island; Galindez Island},
language = {eng},
issn = {1805-0689},
journal = {Czech Polar Reports},
title = {Effects of short-term low temperature stress on chlorophyll fluorescence transients in Antarctic lichen species},
url = {http://www.sci.muni.cz/CPR/11cislo/Bartak_Mareckova-web.pdf},
volume = {6},
year = {2016}
}
TY - JOUR
ID - 1354826
AU - Marečková, Michaela - Barták, Miloš
PY - 2016
TI - Effects of short-term low temperature stress on chlorophyll fluorescence transients in Antarctic lichen species
JF - Czech Polar Reports
VL - 6
IS - 1
SP - 54-65
EP - 54-65
PB - Masarykova univerzita
SN - 18050689
KW - photosynthetic processes
KW - polyphasic kinetics
KW - chlorophyll fluorescence parameters
KW - James Ross Island
KW - Galindez Island
UR - http://www.sci.muni.cz/CPR/11cislo/Bartak_Mareckova-web.pdf
L2 - http://www.sci.muni.cz/CPR/11cislo/Bartak_Mareckova-web.pdf
N2 - Chlorophyll fluorescence is an effective tool for investigating characteristics of any photosynthesizing organisms and its responses due to different stressors. Here, we have studied a short-term temperature response on two Antarctic green algal lichen species: Umbilicaria antarctica, and Physconia muscigena. We measured slow chlorophyll fluorescence transients in the species during slow a cooling of thallus temperature from 20°C to 5°C with a 10 min. acclimation at each temperature in dark. The measurements were supplemented with saturation pulses for the analysis of chlorophyll fluorescence parameters: maximum yield of PS II photochemistry (FV/FM), effective quantum yield of PS II photochemistry (PhiPSII) and non-photochemical quenching (NPQ). In response to decreasing thallus temperature, we observed species-specific changes in chlorophyll fluorescence levels P, S, M, T reached during chlorophyll fluorescence transient as well as in the shape of the chlorophyll fluorescence transients.
ER -
MAREČKOVÁ, Michaela and Miloš BARTÁK. Effects of short-term low temperature stress on chlorophyll fluorescence transients in Antarctic lichen species. \textit{Czech Polar Reports}. Masarykova univerzita, 2016, vol.~6, No~1, p.~54-65. ISSN~1805-0689. Available from: https://dx.doi.org/10.5817/CPR2016-1-6.
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