Responses of thallus anatomy and chlorophyll fluorescence-based
photosynthetic characteristics of two Antarctic species of
genus Usnea to low temperature

J 2021

Responses of thallus anatomy and chlorophyll fluorescence-based photosynthetic characteristics of two Antarctic species of genus Usnea to low temperature

HÁJEK, Josef; Andrea HOJDOVÁ; Kateřina TRNKOVÁ; Peter VÁCZI; Michaela BEDNAŘÍKOVÁ et al.

Základní údaje

Originální název

Responses of thallus anatomy and chlorophyll fluorescence-based photosynthetic characteristics of two Antarctic species of genus Usnea to low temperature

Autoři

HÁJEK, Josef; Andrea HOJDOVÁ; Kateřina TRNKOVÁ; Peter VÁCZI; Michaela BEDNAŘÍKOVÁ a Miloš BARTÁK

Vydání

Photosynthetica, Institute of Experimental Botany, AS CR, 2021, 0300-3604

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10611 Plant sciences, botany

Stát vydavatele

Česká republika

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 2.482

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/21:00121660

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

cross-sections; lichen; temperature effects; Usnea aurantiaco-atra; Usnea sphacelata

Štítky

14314010, rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 28. 5. 2021 10:56, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

Biometrical parameters of two fruticose lichens from Antarctica (Usnea aurantiaco-atra, U. sphacelata) were studied using thallus cross-sections at basal, middle, and apical parts of thallus. The thallus diameter (TD), the thickness of the upper cortex (UCT), distribution of symbiotic alga (Trebouxia sp.) in the algal layer, the thickness of medulla (MT), central cord diameter, and area (CCD, CCA) were measured. U. sphacelata had comparable relative UCT (0.080-0.110, relative to diameter) to U. aurantiaco-atra (0.085-0.130). The relative MT was higher in U. sphacelata (0.240-0.300) than U. aurantiaco-atra (0.080-0.180). In U. aurantiaco-atra, the CCA was two times larger than that in U. sphacelata. Rapid freezing of thalli in liquid nitrogen led to an increase in TD, UCT, CCD because of intrathalline ice crystals formation. Cultivation of symbiotic alga at different temperatures (1.5, 6.0, 15.0, 22.0, and 28.0°C) with repetitive chlorophyll fluorescence parameters measurements showed growth optimum of 15.0°C for potential and effective quantum yield.

Návaznosti

EF16_013/0001708, projekt VaV

Název: ECOPOLARIS - Změny ve struktuře a funkci součástí terestrických polárních ekosystémů (CzechPolar2)

LM2010009, projekt VaV

Název: Projekt CzechPolar - České polární stanice: Stavba a operační náklady

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Czech Polar - České polární stanice: Stavba a operační náklady

LM2015078, projekt VaV

Název: Česká polární výzkumná infrastruktura (Akronym: CzechPolar2)

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Czech Polar Research Infrastructure

Citovat

HÁJEK, Josef; Andrea HOJDOVÁ; Kateřina TRNKOVÁ; Peter VÁCZI; Michaela BEDNAŘÍKOVÁ a Miloš BARTÁK. Responses of thallus anatomy and chlorophyll fluorescence-based photosynthetic characteristics of two Antarctic species of genus Usnea to low temperature. Photosynthetica. Institute of Experimental Botany, AS CR, 2021, roč. 59, č. 1, s. 95-105. ISSN 0300-3604. Dostupné z: https://doi.org/10.32615/ps.2021.002.

@article{1772009,
   author = {Hájek, Josef and Hojdová, Andrea and Trnková, Kateřina and Váczi, Peter and Bednaříková, Michaela and Barták, Miloš},
   article_number = {1},
   doi = {https://doi.org/10.32615/ps.2021.002},
   keywords = {cross-sections; lichen; temperature effects; Usnea aurantiaco-atra; Usnea sphacelata},
   language = {eng},
   issn = {0300-3604},
   journal = {Photosynthetica},
   title = {Responses of thallus anatomy and chlorophyll fluorescence-based photosynthetic characteristics of two Antarctic species of genus Usnea to low temperature},
   url = {https://ps.ueb.cas.cz/pdfs/phs/2021/01/10.pdf},
   volume = {59},
   year = {2021}
}

TY  - JOUR
ID  - 1772009
AU  - Hájek, Josef - Hojdová, Andrea - Trnková, Kateřina - Váczi, Peter - Bednaříková, Michaela - Barták, Miloš
PY  - 2021
TI  - Responses of thallus anatomy and chlorophyll fluorescence-based photosynthetic characteristics of two Antarctic species of genus Usnea to low temperature
JF  - Photosynthetica
VL  - 59
IS  - 1
SP  - 95-105
EP  - 95-105
PB  - Institute of Experimental Botany, AS CR
SN  - 03003604
KW  - cross-sections
KW  - lichen
KW  - temperature effects
KW  - Usnea aurantiaco-atra
KW  - Usnea sphacelata
UR  - https://ps.ueb.cas.cz/pdfs/phs/2021/01/10.pdf
N2  - Biometrical parameters of two fruticose lichens from Antarctica (Usnea aurantiaco-atra, U. sphacelata) were studied using thallus cross-sections at basal, middle, and apical parts of thallus. The thallus diameter (TD), the thickness of the upper cortex (UCT), distribution of symbiotic alga (Trebouxia sp.) in the algal layer, the thickness of medulla (MT), central cord diameter, and area (CCD, CCA) were measured. U. sphacelata had comparable relative UCT (0.080-0.110, relative to diameter) to U. aurantiaco-atra (0.085-0.130). The relative MT was higher in U. sphacelata (0.240-0.300) than U. aurantiaco-atra (0.080-0.180). In U. aurantiaco-atra, the CCA was two times larger than that in U. sphacelata. Rapid freezing of thalli in liquid nitrogen led to an increase in TD, UCT, CCD because of intrathalline ice crystals formation. Cultivation of symbiotic alga at different temperatures (1.5, 6.0, 15.0, 22.0, and 28.0°C) with repetitive chlorophyll fluorescence parameters measurements showed growth optimum of 15.0°C for potential and effective quantum yield.
ER  -

HÁJEK, Josef; Andrea HOJDOVÁ; Kateřina TRNKOVÁ; Peter VÁCZI; Michaela BEDNAŘÍKOVÁ a Miloš BARTÁK. Responses of thallus anatomy and chlorophyll fluorescence-based photosynthetic characteristics of two Antarctic species of genus Usnea to low temperature. \textit{Photosynthetica}. Institute of Experimental Botany, AS CR, 2021, roč.~59, č.~1, s.~95-105. ISSN~0300-3604. Dostupné z: https://doi.org/10.32615/ps.2021.002.

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