Low temperature inhibition of photosystems I, and II in Antarctic lichens of different morphotypes
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F24%3A00139183" target="_blank" >RIV/00216224:14310/24:00139183 - isvavai.cz</a>
Alternative codes found
RIV/62156489:43410/24:43926859
Result on the web
<a href="https://doi.org/10.5817/CPR2024-2-21" target="_blank" >https://doi.org/10.5817/CPR2024-2-21</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.5817/CPR2024-2-21" target="_blank" >10.5817/CPR2024-2-21</a>
Alternative languages
Result language
angličtina
Original language name
Low temperature inhibition of photosystems I, and II in Antarctic lichens of different morphotypes
Original language description
Chlorophyll fluorescence techniques represent an effective tool for photosynthetic performance of extremophilic poikilohydric autotrophs from cold Earth regions. Many parameteres of these techniques can detect the response of photosystem II (PS II) to a great variety of stressors. Chlorophyll fluorescence parametrs related to PS II funcioning are used quite often. For Antarctic lichens, that evolved several physiological mechanisms to cope with close to 0 degrees C or even at sub-zero temperatures. The data gained from both field- and laboratory based studies helps predict ecophysiological consequeces of episodic drops in in situ temperature as well as resistence of Antarctic terrestial autotrophs to low temperature. However, the effect of low and sub-zero temperature on photosystem I (PS I) funcitioning is studied much less frequently than PS II. Therefore, the aim of our study was to evaluate PS II and PS I activities under low temperature and enlarge the knowledge on the low temperature effects on lichen photosynthesis. The focus of our laboratory experiments was to quantify the effect of a short-term treatment by 0 degrees C on chlorophyll fluorescence parameters related to PS II and PS I functioning in two species of chlorolichens from Antarctica (Usnea antarctica, Himantormia lugubris). Our results suggest low temperature-induced decline in physiological processes in chloroplast (Performance index decrease) and activation of protective mechanisms (non- photochemical quenching increase).
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10500 - Earth and related environmental sciences
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace
Others
Publication year
2024
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Czech Polar Reports
ISSN
1805-0689
e-ISSN
1805-0697
Volume of the periodical
14
Issue of the periodical within the volume
2
Country of publishing house
CZ - CZECH REPUBLIC
Number of pages
13
Pages from-to
336-348
UT code for WoS article
001445538600011
EID of the result in the Scopus database
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