Detailed Information on Publication Record
2015
Features of chlorophyll fluorescence transients can be used to investigate low temperature induced effects on photosystem II of algal lichens from polar regions
MISHRA, Anamika, Josef HÁJEK, Tereza TUHÁČKOVÁ, Miloš BARTÁK, Kumud Bandhu MISHRA et. al.Basic information
Original name
Features of chlorophyll fluorescence transients can be used to investigate low temperature induced effects on photosystem II of algal lichens from polar regions
Name in Czech
Charakteristiky indukčních kinetik fluorescence chlorofylu mohou být využity pro výzkum vlivu nízkých teplot na fotosystém II lišejníkových řas z polárních oblastí
Authors
MISHRA, Anamika (356 India), Josef HÁJEK (203 Czech Republic, belonging to the institution), Tereza TUHÁČKOVÁ (203 Czech Republic, belonging to the institution), Miloš BARTÁK (203 Czech Republic, guarantor, belonging to the institution) and Kumud Bandhu MISHRA (356 India)
Edition
Czech Polar Reports, Brno, Masarykova univerzita, 2015, 1805-0689
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10600 1.6 Biological sciences
Country of publisher
Czech Republic
Confidentiality degree
není předmětem státního či obchodního tajemství
References:
RIV identification code
RIV/00216224:14310/15:00084387
Organization unit
Faculty of Science
Keywords (in Czech)
Rhizoplaca melanophtalma; Umbilicaria antarctica; Xanthoria elegans; teplotní stres
Keywords in English
Rhizoplaca melanophtalma; Umbilicaria antarctica; Xanthoria elegans; temperaturestress
Tags
Reviewed
Změněno: 26/10/2015 19:14, prof. Ing. Miloš Barták, CSc.
V originále
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 three Antarctic green algal lichen species: Umbilicaria antarctica, Xanthoria elegans, and Rhizoplaca melanophtalma. We measured slow chlorophyll fluorescence transients in these Antarctic lichen species during slowely cooling of thallus temperature from 20°C to 5, 0 and -5°C with 20 minute acclimation at each temperature. 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 ( Phi PSII) and quenching parameters. In response to decreasing thallus temperature, we observed species-specific changes in chlorophyll fluorescence parameters as well as in the shape of the chlorophyll fluorescence transients. We propose that species-specific changes in the slow phase of chlorophyll fluorescence transients can be potentially used as indicators of freezing stress in photosynthetic apparatus of lichen algal photobionts.
In Czech
Využití pomalé indukční kinetiky fluorescence chlorofylu a parametrů z ní odvozených pro výzkum teplotního stresu u tří druhů lišejníků: Umbilicaria antarctica, Xanthoria elegans, a Rhizoplaca melanophtalma.
Links
LM2010009, research and development project |
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