Addition of ribitol into Xanthoparmelia somloensis thallus
alters photosynthetic processes in PS II  of symbiotic alga at
sub-zero temperature

D 2008

Addition of ribitol into Xanthoparmelia somloensis thallus alters photosynthetic processes in PS II of symbiotic alga at sub-zero temperature

HÁJEK, Josef, Peter VÁCZI, Miloš BARTÁK a Lubomír SMEJKAL

Základní údaje

Originální název

Addition of ribitol into Xanthoparmelia somloensis thallus alters photosynthetic processes in PS II of symbiotic alga at sub-zero temperature

Název česky

Přídavek ribitolu do stélek Xanthoparmelia somloensis mění fotosyntetické procesy v PS II u symbiotických řas za mrazových teplot

Autoři

HÁJEK, Josef (203 Česká republika, garant), Peter VÁCZI (203 Česká republika), Miloš BARTÁK (703 Slovensko) a Lubomír SMEJKAL (203 Česká republika)

Vydání

Lund, Physiologia Plantarum. Special Issue: Redox Signal Integration. FESPB 2008 Abstracts, od s. 09-056, 1 s. 2008

Nakladatel

John Wiley - Blackwell

Další údaje

Jazyk

angličtina

Typ výsledku

Stať ve sborníku

Obor

10600 1.6 Biological sciences

Stát vydavatele

Finsko

Utajení

není předmětem státního či obchodního tajemství

Odkazy

URL

Impakt faktor

Impact factor: 2.334

Kód RIV

RIV/00216224:14310/08:00024269

Organizační jednotka

Přírodovědecká fakulta

ISSN

Klíčová slova anglicky

polyols; cryoprotective role; low temperature; ribitol

Štítky

cryoprotective role, low temperature, polyols, ribitol

Příznaky

Mezinárodní význam

Změněno: 11. 9. 2008 12:42, doc. Mgr. Josef Hájek, Ph.D.

Anotace

ORIG CZ

V originále

Ribitol and other polyols have a cryoprotective role in plants and lichens. We tested positive effects of extrenally added ribitol (32, 50 mM)on primary photochemical processes at low temperature (5, 0, and -5 deg C) in X. somloensis. After ribitol addition, thalli segments were exposed to 300 umol m-2 s-1 at the above temperatures for 168 h. Each 24 h, chlorophyll fl uorescence parameters (Fv/Fm, effective quantum yield of PS II - Yield PS II, non-photochemical quenching - NPQ) were measured by an imaging fl uorometer (HFC-010, P.S.I., CZ). Positive effect of ribitol on Fv/Fm and Yield PS II, was apparent only at -5 deg C. The significant effect was seen early, i.e. within the fi rst 24 h. The difference in Fv/Fm and Yield PS II between control and 32 mM treated thalli was seen throughout the whole exposition period. Surprisingly, 50 mM treatment led to a decrease in Fv/Fm and Yield PS II values at -5 deg C, while no change was seen at 0, 5 deg C. Such ribitol concentration was a considerable stressor to PS II which might be documented by dramatic increase in NPQ. Supported by the GAAV KJB601630808 funding.

Česky

V této práci se studoval účinek extreně dodaného ribitolu na fotosynteické procesy u stélek lišejníku Xanthoparmelia somloensis.

Návaznosti

KJB601630808, projekt VaV

Název: Účinky chladu a mrazu na fotosyntézu lišejníkových symbiotických řas ovlivněných ribitolem.

Investor: Akademie věd ČR, Účinky chladu a mrazu na fotosyntézu lišejníkových symbiotických řas ovlivněných ribitolem

Citovat

HÁJEK, Josef, Peter VÁCZI, Miloš BARTÁK a Lubomír SMEJKAL. Addition of ribitol into Xanthoparmelia somloensis thallus alters photosynthetic processes in PS II of symbiotic alga at sub-zero temperature. In Physiologia Plantarum. Special Issue: Redox Signal Integration. FESPB 2008 Abstracts. Lund: John Wiley - Blackwell, 2008, s. 09-056, 1 s. ISSN 0031-9317.

@inproceedings{777150,
   author = {Hájek, Josef and Váczi, Peter and Barták, Miloš and Smejkal, Lubomír},
   address = {Lund},
   booktitle = {Physiologia Plantarum. Special Issue: Redox Signal Integration. FESPB 2008 Abstracts},
   keywords = {polyols; cryoprotective role; low temperature; ribitol},
   language = {eng},
   location = {Lund},
   pages = {09-056},
   publisher = {John Wiley - Blackwell},
   title = {Addition of ribitol into Xanthoparmelia somloensis thallus alters photosynthetic processes in PS II of symbiotic alga at sub-zero temperature},
   url = {http://www.fespb2008.org},
   year = {2008}
}

TY  - JOUR
ID  - 777150
AU  - Hájek, Josef - Váczi, Peter - Barták, Miloš - Smejkal, Lubomír
PY  - 2008
TI  - Addition of ribitol into Xanthoparmelia somloensis thallus alters photosynthetic processes in PS II of symbiotic alga at sub-zero temperature
PB  - John Wiley - Blackwell
CY  - Lund
KW  - polyols
KW  - cryoprotective role
KW  - low temperature
KW  - ribitol
UR  - http://www.fespb2008.org
N2  - Ribitol and other polyols have a cryoprotective role in plants and lichens. We tested positive effects of extrenally added ribitol (32, 50 mM)on primary photochemical processes at low temperature (5, 0, and -5 deg C) in X. somloensis. After ribitol addition, thalli segments were exposed to 300 umol m-2 s-1 at the above temperatures for 168 h. Each 24 h, chlorophyll fl uorescence parameters (Fv/Fm, effective quantum yield of PS II - Yield PS II, non-photochemical quenching - NPQ) were measured by an imaging fl uorometer (HFC-010, P.S.I., CZ). Positive effect of ribitol on Fv/Fm and Yield PS II, was apparent only at -5 deg C. The significant effect was seen early, i.e. within the fi rst 24 h. The difference in Fv/Fm and Yield PS II between control and 32 mM treated thalli was seen throughout the whole exposition period. Surprisingly, 50 mM treatment led to a decrease in Fv/Fm and Yield PS II values at -5 deg C, while no change was seen at 0, 5 deg C. Such ribitol concentration was a considerable stressor to PS II which might be documented by dramatic increase in NPQ. Supported by the GAAV KJB601630808 funding.
ER  -

HÁJEK, Josef, Peter VÁCZI, Miloš BARTÁK a Lubomír SMEJKAL. Addition of ribitol into Xanthoparmelia somloensis thallus alters photosynthetic processes in PS II of symbiotic alga at sub-zero temperature. In \textit{Physiologia Plantarum. Special Issue: Redox Signal Integration. FESPB 2008 Abstracts}. Lund: John Wiley - Blackwell, 2008, s.~09-056, 1 s. ISSN~0031-9317.

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