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

Result code in IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F08%3A00024269" target="_blank" >RIV/00216224:14310/08:00024269 - isvavai.cz</a>

Result on the web

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DOI - Digital Object Identifier

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Result language

angličtina

Original language name

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

Original language description

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 32mM 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 cons

Czech name

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

Czech description

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

Type

D - Article in proceedings

CEP classification

EF - Botany

OECD FORD branch

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Project

<a href="/en/project/KJB601630808" target="_blank" >KJB601630808: Effects of low and freezing temperatures on photosynthesis in lichen symbiotic algae affected by ribitol.</a><br>

Continuities

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year

2008

Confidentiality

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Article name in the collection

Physiologia Plantarum. Special Issue: Redox Signal Integration. FESPB 2008 Abstracts

ISBN

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ISSN

0031-9317

e-ISSN

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Number of pages

1

Pages from-to

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Publisher name

John Wiley - Blackwell

Place of publication

Lund

Event location

Tampere, Finland

Event date

Jan 1, 2008

Type of event by nationality

EUR - Evropská akce

UT code for WoS article

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