Low-temperature limitation of primary photosynthetic processes
in Antarctic lichens Umbilicaria antarctica and Xanthoria
elegans

J 2007

Low-temperature limitation of primary photosynthetic processes in Antarctic lichens Umbilicaria antarctica and Xanthoria elegans

BARTÁK, Miloš, Peter VÁCZI, Josef HÁJEK and Jerzy SMYKLA

Basic information

Original name

Low-temperature limitation of primary photosynthetic processes in Antarctic lichens Umbilicaria antarctica and Xanthoria elegans

Name in Czech

Nízkoteplotní limitace primárních fotosyntetických procesů antarktických lišejníků Umbilicaria antarctica a Xanthoria elegans

Authors

BARTÁK, Miloš (203 Czech Republic, guarantor), Peter VÁCZI (703 Slovakia), Josef HÁJEK (203 Czech Republic) and Jerzy SMYKLA (616 Poland)

Edition

Polar Biology, Berlin / Heidelberg, Springer, 2007, 0722-4060

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10600 1.6 Biological sciences

Country of publisher

Germany

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Polar Biology (Springer) home page

Impact factor

Impact factor: 1.734

RIV identification code

RIV/00216224:14310/07:00022948

Organization unit

Faculty of Science

UT WoS

000251717100006

Keywords in English

Chlorophyll fluorescence imaging; Extreme temperature; Freezing; Non-photochemical quenching

Abstract

ORIG CZ

V originále

Temperature response curves of chlorophyll a fluorescence parameters were used to assess minimum subzero temperature assuring functioning of photosynthetic photochemical processes in photosystem II (PS II) of Antarctic lichens. Umbilicaria Antarctica and Xanthoria elegans were measured within the temperature range from minus20 to plus10 degC by a fluorometric imaging system. For potential (F V/F M) and actual (Phi II) quantum yields of photochemical processes the minimum temperature was found to be between minus10 and minus20 degC. Nonphotochemical quenching (NPQ) of absorbed excitation energy increased with temperature drop reaching maximum NPQ at minus15 degC. Image analysis revealed intrathalline heterogeneity of chlorophyll a fluorescence parameters with temperature drop. Temperature response of Phi II exhibited an S curve with pronounced intrathalline differences in X. elegans. The same relation was linear with only limited intrathalline difference in U. antarctica. The results showed that Antarctic lichen species were well adapted to subzero temperatures and capable of performing primary photosynthesis at minus15 degC.

In Czech

Práce se zabývá nízkoteplotní inhibicí primárních fotochemických procesů fotosyntézy u dvou druhů antarktických lišejníků. Detailněji viz anglický abstrakt.

Links

ME 945, research and development project

Name: Multidisciplinární výzkum Antarktické terestrické vegetace v rámci IPY

Investor: Ministry of Education, Youth and Sports of the CR, Research and Development Programme KONTAKT (ME)

Citovat

BARTÁK, Miloš, Peter VÁCZI, Josef HÁJEK and Jerzy SMYKLA. Low-temperature limitation of primary photosynthetic processes in Antarctic lichens Umbilicaria antarctica and Xanthoria elegans. Polar Biology. Berlin / Heidelberg: Springer, 2007, vol. 31, No 1, p. 47-51. ISSN 0722-4060.

@article{728344,
   author = {Barták, Miloš and Váczi, Peter and Hájek, Josef and Smykla, Jerzy},
   article_location = {Berlin / Heidelberg},
   article_number = {1},
   keywords = {Chlorophyll fluorescence imaging; Extreme temperature; Freezing; Non-photochemical quenching},
   language = {eng},
   issn = {0722-4060},
   journal = {Polar Biology},
   title = {Low-temperature limitation of primary photosynthetic processes in Antarctic lichens Umbilicaria antarctica and Xanthoria elegans},
   url = {http://www.springer.com/dal/home?SGWID=1-102-70-1045969-0&changeHeader=true&SHORTCUT=www.springer.com/journal/300},
   volume = {31},
   year = {2007}
}

TY  - JOUR
ID  - 728344
AU  - Barták, Miloš - Váczi, Peter - Hájek, Josef - Smykla, Jerzy
PY  - 2007
TI  - Low-temperature limitation of primary photosynthetic processes in Antarctic lichens Umbilicaria antarctica and Xanthoria elegans
JF  - Polar Biology
VL  - 31
IS  - 1
SP  - 47-51
EP  - 47-51
PB  - Springer
SN  - 07224060
KW  - Chlorophyll fluorescence imaging
KW  - Extreme temperature
KW  - Freezing
KW  - Non-photochemical quenching
UR  - http://www.springer.com/dal/home?SGWID=1-102-70-1045969-0&changeHeader=true&SHORTCUT=www.springer.com/journal/300
N2  - Temperature response curves of chlorophyll a fluorescence parameters were used to assess minimum subzero temperature assuring functioning of photosynthetic photochemical processes in photosystem II (PS II) of Antarctic lichens. Umbilicaria Antarctica and Xanthoria elegans were measured within the temperature range from minus20 to plus10 degC by a fluorometric imaging system. For potential (F V/F M) and actual (Phi II) quantum yields of photochemical processes the minimum temperature was found to be between minus10 and minus20 degC. Nonphotochemical quenching (NPQ) of absorbed excitation energy increased with temperature drop reaching maximum NPQ at minus15 degC. Image analysis revealed intrathalline heterogeneity of chlorophyll a fluorescence parameters with temperature drop. Temperature response of Phi II exhibited an S curve with pronounced intrathalline differences in X. elegans. The same relation was linear with only limited intrathalline difference in U. antarctica. The results showed that Antarctic lichen species were well adapted to subzero temperatures and capable of performing primary photosynthesis at minus15 degC.
ER  -

BARTÁK, Miloš, Peter VÁCZI, Josef HÁJEK and Jerzy SMYKLA. Low-temperature limitation of primary photosynthetic processes in Antarctic lichens Umbilicaria antarctica and Xanthoria elegans. \textit{Polar Biology}. Berlin / Heidelberg: Springer, 2007, vol.~31, No~1, p.~47-51. ISSN~0722-4060.

Detailed Information on Publication Record