Inhibition of Primary Photosynthesis in Desiccating Antarctic
Lichens Differing in Their Photobionts, Thallus Morphology, and
Spectral Properties

J 2021

Inhibition of Primary Photosynthesis in Desiccating Antarctic Lichens Differing in Their Photobionts, Thallus Morphology, and Spectral Properties

BARTÁK, Miloš; Josef HÁJEK; Alla OREKHOVA; Johana VILLAGRA; Catalina MARÍN et. al.

Základní údaje

Originální název

Inhibition of Primary Photosynthesis in Desiccating Antarctic Lichens Differing in Their Photobionts, Thallus Morphology, and Spectral Properties

Autoři

BARTÁK, Miloš (203 Česká republika, domácí); Josef HÁJEK (203 Česká republika, domácí); Alla OREKHOVA (643 Rusko, domácí); Johana VILLAGRA; Catalina MARÍN; Götz PALFNER a Angélica CASANOVA-KATNY (garant)

Vydání

Microorganisms, Basel, MDPI, 2021, 2076-2607

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10606 Microbiology

Stát vydavatele

Švýcarsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 4.926

Kód RIV

RIV/00216224:14310/21:00121628

Organizační jednotka

Přírodovědecká fakulta

DOI

http://dx.doi.org/10.3390/microorganisms9040818

UT WoS

000643310500001

EID Scopus

2-s2.0-85104037877

Klíčová slova anglicky

maritime antarctica; King George Island; lichen dehydration; chlorophyll fluorescence; stress tolerance

Štítky

rivok

Příznaky

Mezinárodní význam, Recenzováno

Změněno: 20. 5. 2021 10:36, Mgr. Marie Novosadová Šípková, DiS.

Anotace

V originále

Five macrolichens of different thallus morphology from Antarctica (King George Island) were used for this ecophysiological study. The effect of thallus desiccation on primary photosynthetic processes was examined. We investigated the lichens’ responses to the relative water content (RWC) in their thalli during the transition from a wet (RWC of 100%) to a dry state (RWC of 0%). The slow Kautsky kinetics of chlorophyll fluorescence (ChlF) that was recorded during controlled dehydration (RWC decreased from 100 to 0%) and supplemented with a quenching analysis revealed a polyphasic species-specific response of variable fluorescence. The changes in ChlF at a steady state (Fs), potential and effective quantum yields of photosystem II (FV/FM, ΦPSII), and nonphotochemical quenching (NPQ) reflected a desiccation-induced inhibition of the photosynthetic processes. The dehydration-dependent fall in FV/FM and ΦPSII was species-specific, starting at an RWC range of 22–32%. The critical RWC for ΦPSII was below 5%. The changes indicated the involvement of protective mechanisms in the chloroplastic apparatus of lichen photobionts at RWCs of below 20%. In both the wet and dry states, the spectral reflectance curves (SRC) (wavelength 400–800 nm) and indices (NDVI, PRI) of the studied lichen species were measured. Black Himantormia lugubris showed no difference in the SRCs between wet and dry state. Other lichens showed a higher reflectance in the dry state compared to the wet state. The lichen morphology and anatomy data, together with the ChlF and spectral reflectance data, are discussed in relation to its potential for ecophysiological studies in Antarctic lichens.

Návaznosti

EF16_013/0001708, projekt VaV

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

LM2015078, projekt VaV

Název: Česká polární výzkumná infrastruktura (Akronym: CzechPolar2)

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

MUNI/G/1540/2019, interní kód MU

Název: ARCTIC Centre for Human-to-Environment Oriented Studies: Impact of Climate Change and Human Activities in the Arctic (Akronym: ARCTOS MU)

Investor: Masarykova univerzita, ARCTIC Centre for Human-to-Environment Oriented Studies: Impact of Climate Change and Human Activities in the Arctic, INTERDISCIPLINARY - Mezioborové výzkumné projekty

Citovat

BARTÁK, Miloš; Josef HÁJEK; Alla OREKHOVA; Johana VILLAGRA; Catalina MARÍN; Götz PALFNER a Angélica CASANOVA-KATNY. Inhibition of Primary Photosynthesis in Desiccating Antarctic Lichens Differing in Their Photobionts, Thallus Morphology, and Spectral Properties. Microorganisms. Basel: MDPI, 2021, roč. 9, č. 4, s. "818", 21 s. ISSN 2076-2607. Dostupné z: https://dx.doi.org/10.3390/microorganisms9040818.

@article{1770238,
   author = {Barták, Miloš and Hájek, Josef and Orekhova, Alla and Villagra, Johana and Marín, Catalina and Palfner, Götz and CasanovaandKatny, Angélica},
   article_location = {Basel},
   article_number = {4},
   doi = {http://dx.doi.org/10.3390/microorganisms9040818},
   keywords = {maritime antarctica; King George Island; lichen dehydration; chlorophyll fluorescence; stress tolerance},
   language = {eng},
   issn = {2076-2607},
   journal = {Microorganisms},
   title = {Inhibition of Primary Photosynthesis in Desiccating Antarctic Lichens Differing in Their Photobionts, Thallus Morphology, and Spectral Properties},
   url = {https://www.mdpi.com/2076-2607/9/4/818},
   volume = {9},
   year = {2021}
}

TY  - JOUR
ID  - 1770238
AU  - Barták, Miloš - Hájek, Josef - Orekhova, Alla - Villagra, Johana - Marín, Catalina - Palfner, Götz - Casanova-Katny, Angélica
PY  - 2021
TI  - Inhibition of Primary Photosynthesis in Desiccating Antarctic Lichens Differing in Their Photobionts, Thallus Morphology, and Spectral Properties
JF  - Microorganisms
VL  - 9
IS  - 4
SP  - "818"
EP  - "818"
PB  - MDPI
SN  - 20762607
KW  - maritime antarctica
KW  - King George Island
KW  - lichen dehydration
KW  - chlorophyll fluorescence
KW  - stress tolerance
UR  - https://www.mdpi.com/2076-2607/9/4/818
N2  - Five macrolichens of different thallus morphology from Antarctica (King George Island) were used for this ecophysiological study. The effect of thallus desiccation on primary photosynthetic processes was examined. We investigated the lichens’ responses to the relative water content (RWC) in their thalli during the transition from a wet (RWC of 100%) to a dry state (RWC of 0%). The slow Kautsky kinetics of chlorophyll fluorescence (ChlF) that was recorded during controlled dehydration (RWC decreased from 100 to 0%) and supplemented with a quenching analysis revealed a polyphasic species-specific response of variable fluorescence. The changes in ChlF at a steady state (Fs), potential and effective quantum yields of photosystem II (FV/FM, ΦPSII), and nonphotochemical quenching (NPQ) reflected a desiccation-induced inhibition of the photosynthetic processes. The dehydration-dependent fall in FV/FM and ΦPSII was species-specific, starting at an RWC range of 22–32%. The critical RWC for ΦPSII was below 5%. The changes indicated the involvement of protective mechanisms in the chloroplastic apparatus of lichen photobionts at RWCs of below 20%. In both the wet and dry states, the spectral reflectance curves (SRC) (wavelength 400–800 nm) and indices (NDVI, PRI) of the studied lichen species were measured. Black Himantormia lugubris showed no difference in the SRCs between wet and dry state. Other lichens showed a higher reflectance in the dry state compared to the wet state. The lichen morphology and anatomy data, together with the ChlF and spectral reflectance data, are discussed in relation to its potential for ecophysiological studies in Antarctic lichens.
ER  -

BARTÁK, Miloš; Josef HÁJEK; Alla OREKHOVA; Johana VILLAGRA; Catalina MARÍN; Götz PALFNER a Angélica CASANOVA-KATNY. Inhibition of Primary Photosynthesis in Desiccating Antarctic Lichens Differing in Their Photobionts, Thallus Morphology, and Spectral Properties. \textit{Microorganisms}. Basel: MDPI, 2021, roč.~9, č.~4, s.~''818'', 21 s. ISSN~2076-2607. Dostupné z: https://dx.doi.org/10.3390/microorganisms9040818.

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