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 a Jerzy SMYKLA

Základní údaje

Originální název

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

Název česky

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

Autoři

BARTÁK, Miloš; Peter VÁCZI; Josef HÁJEK a Jerzy SMYKLA

Vydání

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

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10600 1.6 Biological sciences

Stát vydavatele

Německo

Utajení

není předmětem státního či obchodního tajemství

Odkazy

Polar Biology (Springer) home page

Impakt faktor

Impact factor: 1.734

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/07:00022948

Organizační jednotka

Přírodovědecká fakulta

UT WoS

000251717100006

Klíčová slova anglicky

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

Štítky

chlorophyll fluorescence imaging, Extreme temperature, Freezing, non-photochemical quenching

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 24. 6. 2009 10:58, prof. Ing. Miloš Barták, CSc.

Anotace

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.

Česky

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

Návaznosti

ME 945, projekt VaV

Název: Multidisciplinární výzkum Antarktické terestrické vegetace v rámci IPY

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Multidisciplinární výzkum Antarktické terestrické vegetace v rámci IPY, Program výzkumu a vývoje KONTAKT (ME)

Citovat

BARTÁK, Miloš; Peter VÁCZI; Josef HÁJEK a Jerzy SMYKLA. Low-temperature limitation of primary photosynthetic processes in Antarctic lichens Umbilicaria antarctica and Xanthoria elegans. Polar Biology. Berlin / Heidelberg: Springer, 2007, roč. 31, č. 1, s. 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 a Jerzy SMYKLA. Low-temperature limitation of primary photosynthetic processes in Antarctic lichens Umbilicaria antarctica and Xanthoria elegans. \textit{Polar Biology}. Berlin / Heidelberg: Springer, 2007, roč.~31, č.~1, s.~47-51. ISSN~0722-4060.

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