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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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