Detailed Information on Publication Record
2019
Temperature effects on photosynthetic performance of Antarctic lichen Dermatocarpon polyphyllizum: a chlorophyll fluorescence study
MAREČKOVÁ, Michaela, Miloš BARTÁK and Josef HÁJEKBasic information
Original name
Temperature effects on photosynthetic performance of Antarctic lichen Dermatocarpon polyphyllizum: a chlorophyll fluorescence study
Name in Czech
Účinky teploty na fotosyntézu lišejníku Dermatocarpon polyphyllizum: Studie fluorescence chlorofylu
Authors
MAREČKOVÁ, Michaela (203 Czech Republic, guarantor, belonging to the institution), Miloš BARTÁK (203 Czech Republic, belonging to the institution) and Josef HÁJEK (203 Czech Republic, belonging to the institution)
Edition
Polar Biology, New York, Springer, 2019, 0722-4060
Other information
Language
English
Type of outcome
Článek v odborném periodiku
Field of Study
10611 Plant sciences, botany
Country of publisher
United Kingdom of Great Britain and Northern Ireland
Confidentiality degree
není předmětem státního či obchodního tajemství
References:
Impact factor
Impact factor: 1.728
RIV identification code
RIV/00216224:14310/19:00109438
Organization unit
Faculty of Science
UT WoS
000461817700004
Keywords (in Czech)
Diplosphaera sp.; OJIP; Kautského kientika; lineární ochlazování; fotosystém II
Keywords in English
Diplosphaera sp.; OJIP; K-step; Kautsky kinetic; Linear cooling; Photosystem II
Tags
Tags
International impact, Reviewed
Změněno: 23/3/2020 16:20, Mgr. Marie Šípková, DiS.
V originále
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.
In Czech
Fluorescence chlorofylu
Links
EF16_013/0001708, research and development project |
| ||
LM2015078, research and development project |
|