Temperature effects on photosynthetic performance of Antarctic lichen Dermatocarpon polyphyllizum: a chlorophyll fluorescence study
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F19%3A00109438" target="_blank" >RIV/00216224:14310/19:00109438 - isvavai.cz</a>
Result on the web
<a href="https://link.springer.com/article/10.1007%2Fs00300-019-02464-w" target="_blank" >https://link.springer.com/article/10.1007%2Fs00300-019-02464-w</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1007/s00300-019-02464-w" target="_blank" >10.1007/s00300-019-02464-w</a>
Alternative languages
Result language
angličtina
Original language name
Temperature effects on photosynthetic performance of Antarctic lichen Dermatocarpon polyphyllizum: a chlorophyll fluorescence study
Original language description
Chlorophyll fluorescence is an important indicator of a photosynthetic energy conversion in chloroplast photosystem II and responds sensitively to stress factors affecting photosynthesizing organisms. Three different methods were employed to identify the most sensitive fluorescence parameters responding to thallus temperature decrease within Antarctic lichen Dermatocarpon polyphyllizum: (1) Fast chlorophyll fluorescence transient (OJIP with parameters characterizing photosystem II functioning) (2) Slow Kautsky kinetics supplemented by saturation pulses (to evaluate quantum yield of photosynthetic processes in photosystem II, as well as maximum quantum PSII efficiency and non-photochemical and photochemical quenching), and (3) Linear cooling from +22 to-40 degrees C (to determine change in phi(PSII) and the critical temperature for PSII). A K-step (usually documented at highly stressed organisms) was found in OJIPs measured at+22 degrees C at 0.22-0.40ms and attributed to the negative effect of high temperature on PSII functioning, PSII donor side limitation in particular. At subzero temperature (-0.5, -5 degrees C), an L-step was detected at 0.05ms and related to a low temperature-induced decrease in connectivity between light-harvesting complexes and PSII. An increase of DI0/RC (the flux of dissipated excitation energy) was reported for the first time in lichens. The OJIP-derived parameters, DI0/RC and Phi_D-0 (quantum yield of energy dissipation) in particular, indicated that they might be used for the detection of early events in low temperature-affected lichens. Linear cooling data determined the critical temperature (-12 degrees C) for primary photosynthetic processes (phi(PSII)) in Dermatocarpon.
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
10611 - Plant sciences, botany
Result continuities
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)
Others
Publication year
2019
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Polar Biology
ISSN
0722-4060
e-ISSN
1432-2056
Volume of the periodical
42
Issue of the periodical within the volume
4
Country of publishing house
GB - UNITED KINGDOM
Number of pages
17
Pages from-to
685-701
UT code for WoS article
000461817700004
EID of the result in the Scopus database
2-s2.0-85062690559