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MISHRA, Anamika, Josef HÁJEK, Tereza TUHÁČKOVÁ, Miloš BARTÁK and Kumud Bandhu MISHRA. Features of chlorophyll fluorescence transients can be used to investigate low temperature induced effects on photosystem II of algal lichens from polar regions. Czech Polar Reports. Brno: Masarykova univerzita, 2015, vol. 5, No 1, p. 99-111. ISSN 1805-0689. doi:10.5817/CPR2015-1-10.
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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
Original language English
Type of outcome Article in a journal
Field of Study 10600 1.6 Biological sciences
Country of publisher Czech Republic
Confidentiality degree is not subject to a state or trade secret
WWW free pdf from Czech Polar Reports web site
RIV identification code RIV/00216224:14310/15:00084387
Organization unit Faculty of Science
Doi http://dx.doi.org/10.5817/CPR2015-1-10
Keywords (in Czech) Rhizoplaca melanophtalma; Umbilicaria antarctica; Xanthoria elegans; teplotní stres
Keywords in English Rhizoplaca melanophtalma; Umbilicaria antarctica; Xanthoria elegans; temperaturestress
Tags AKR, rivok
Tags Reviewed
Changed by Changed by: prof. Ing. Miloš Barták, CSc., učo 57. Changed: 26. 10. 2015 19:14.
Abstract
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.
Abstract (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 projectName: Projekt CzechPolar - České polární stanice: Stavba a operační náklady
Investor: Ministry of Education, Youth and Sports of the CR
Displayed: 8. 8. 2022 14:35