Sensitivity of photosynthetic processes to freezing temperature in extremophilic lichens evaluated by linear cooling and chlorophyll fluorescence

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F16%3A00091424" target="_blank" >RIV/00216224:14310/16:00091424 - isvavai.cz</a>

Result on the web

<a href="http://dx.doi.org/10.1016/j.cryobiol.2016.10.002" target="_blank" >http://dx.doi.org/10.1016/j.cryobiol.2016.10.002</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.cryobiol.2016.10.002" target="_blank" >10.1016/j.cryobiol.2016.10.002</a>

Result language

angličtina

Original language name

Sensitivity of photosynthetic processes to freezing temperature in extremophilic lichens evaluated by linear cooling and chlorophyll fluorescence

Original language description

Extremophilic lichens and their photosynthesizing photobionts from the cold regions of Earth are adapted to perform photosynthesis at subzero temperatures. To evaluate interspecific differences in the critical temperature for primary photochemical processes of photosynthesis, we exposed lichen thalli of Usnea antarctica, Usnea aurantiaco-atra, and Umbilicaria cylindrica to linear cooling from +20 to minus 50 °C at a constant rate of 2 °C/min. Simultaneously, two chlorophyll fluorescence parameters (FV/FM: potential yield of photosynthetic processes in photosystem II, YieldPSII: effective quantum yield of PS II) evaluating a gradual subzero temperature-induced decline in photosynthetic processes were measured by a modulated fluorometer. For the studied species, the response of FV/FM and YieldPSII to declining temperature showed an S-curve shape. The decline in FV/FM and YieldPSII at low temperatures started at minus 5 and +5 °C, respectively in the majority of cases.

Czech name

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Czech description

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Type

J_x - Unclassified - Peer-reviewed scientific article (Jimp, Jsc and Jost)

CEP classification

EF - Botany

OECD FORD branch

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Project

Result was created during the realization of more than one project. More information in the Projects tab.

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2016

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Name of the periodical

Cryobiology

ISSN

0011-2240

e-ISSN

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Volume of the periodical

73

Issue of the periodical within the volume

3

Country of publishing house

US - UNITED STATES

Number of pages

6

Pages from-to

329-334

UT code for WoS article

000389010600005

EID of the result in the Scopus database

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