2021
Resistance of Antarctic moss Sanionia uncinata to photoinhibition: Chlorophyll fluorescence analysis of samples from the western and eastern coasts of the Antarctic Peninsula
OREKHOVA, Alla, Miloš BARTÁK, Angélica CASANOVA-KATNY a Josef HÁJEKZákladní údaje
Originální název
Resistance of Antarctic moss Sanionia uncinata to photoinhibition: Chlorophyll fluorescence analysis of samples from the western and eastern coasts of the Antarctic Peninsula
Autoři
OREKHOVA, Alla (643 Rusko, domácí), Miloš BARTÁK (203 Česká republika, domácí), Angélica CASANOVA-KATNY (152 Chile) a Josef HÁJEK (203 Česká republika, garant, domácí)
Vydání
Plant Biology, Wiley, 2021, 1435-8603
Další údaje
Jazyk
angličtina
Typ výsledku
Článek v odborném periodiku
Obor
10611 Plant sciences, botany
Stát vydavatele
Spojené státy
Utajení
není předmětem státního či obchodního tajemství
Odkazy
Impakt faktor
Impact factor: 3.877
Kód RIV
RIV/00216224:14310/21:00121854
Organizační jednotka
Přírodovědecká fakulta
UT WoS
000652849000001
Klíčová slova anglicky
Antarctica; chlorophyll fluorescence; moss; photoinhibitory treatment; spectral reflectance
Štítky
Příznaky
Mezinárodní význam, Recenzováno
Změněno: 20. 10. 2021 17:19, Mgr. Marie Šípková, DiS.
Anotace
V originále
Interspecific differences in sensitivity of the Antarctic moss Sanionia uncinata from King George Island (KGI) and James Ross Island (JRI) to photoinhibitory treatment were studied in laboratory conditions using chlorophyll fluorescence techniques. Slow (Kautsky) and fast (OJIP) kinetics were used for the measurements. Samples were exposed to a short-term (60 min) photoinhibitory treatment (PIT, 2000 μmol·m−2·s−1 PAR). The photoinhibitory treatment (PIT) led to photoinhibition which was indicated by the decrease in FV/FM and ΦPSII in KGI but not in JRI samples. However, this decrease was small and full recovery was reached 90 min after PIT termination. Non-photochemical quenching (NPQ) was activated during the PIT, and rapidly relaxed during recovery. Early stages of photoinhibition showed a drop in FV/FM and ΦPSII to minimum values within the first 10 s of the PIT, with their subsequent increase apparent within fast (0–5 min PIT) and slow (5–50 min PIT) phases of adjustment. The PIT caused a decrease in the performance index (Pi_Abs), photosynthetic electron transport per reaction centre (RC) (ET0/RC). The PIT induced an increase in thermal dissipation per RC (DI0/RC), effectivity of thermal dissipation (Phi_D0), absorption per RC (ABS/RC) and trapping rate per RC (TR0/RC). In conclusion, PIT led to only slight photoinhibition followed by fast recovery in S. uncinata from KGI and JRI, since FV/FM and ΦPSII returned to pre-photoinhibitory conditions. Therefore, S. uncinata might be considered resistant to photoinhibition even in the wet state. The KGI samples showed higher resistance to photoinhibition than the JRI samples.
Návaznosti
EF16_013/0001708, projekt VaV |
| ||
LM2010009, projekt VaV |
| ||
LM2015078, projekt VaV |
|