J 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

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

Tags

Reviewed
Změněno: 26/10/2015 19:14, prof. Ing. Miloš Barták, CSc.

Abstract

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
Name: Projekt CzechPolar - České polární stanice: Stavba a operační náklady
Investor: Ministry of Education, Youth and Sports of the CR

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