Levels of polyols and non-structural saccharides in natural and experimentally affected lichens: Case study in Xanthoparmelia somloensis

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F09%3A00028545" target="_blank" >RIV/00216224:14310/09:00028545 - isvavai.cz</a>

Výsledek na webu

—

DOI - Digital Object Identifier

—

Jazyk výsledku

angličtina

Název v původním jazyce

Levels of polyols and non-structural saccharides in natural and experimentally affected lichens: Case study in Xanthoparmelia somloensis

Popis výsledku v původním jazyce

In algae possessing lichens, polyols serve as energy-storing compounds. They are also osmotically-active compounds that increase lichen resistance to low and freezing temperatures. Natural levels of polyols in lichens are species-specific. They vary within 1.4-8.8 mg.g-1 DW (ribitol), 0.4-29.0 mg.g-1 (mannitol). We investigated natural and experimentally-affected contents of polyols and non-structural saccharides (NSS). Ribitol, mannitol, arabitol and NSS were HPLC-evaluated before and after the experimental treatments: in-vitro exposition of thalli to additional ribitol (32, 50 mM for 168 h at +5, 0, -5 deg C). Initial values were 2.6, 4.1 mg.g-1 DW (ribitol, mannitol). Addition of ribitol led to increased levels of mannitol (at all temperatures), while ribitol, arabitol and fructose showed either no or insignificant change. In control and ribitol-treated lichens, lowest mannitol content was found at -5 deg C. The results were attibuted to altered utilization of polyols at freezing te

Název v anglickém jazyce

Levels of polyols and non-structural saccharides in natural and experimentally affected lichens: Case study in Xanthoparmelia somloensis

Popis výsledku anglicky

In algae possessing lichens, polyols serve as energy-storing compounds. They are also osmotically-active compounds that increase lichen resistance to low and freezing temperatures. Natural levels of polyols in lichens are species-specific. They vary within 1.4-8.8 mg.g-1 DW (ribitol), 0.4-29.0 mg.g-1 (mannitol). We investigated natural and experimentally-affected contents of polyols and non-structural saccharides (NSS). Ribitol, mannitol, arabitol and NSS were HPLC-evaluated before and after the experimental treatments: in-vitro exposition of thalli to additional ribitol (32, 50 mM for 168 h at +5, 0, -5 deg C). Initial values were 2.6, 4.1 mg.g-1 DW (ribitol, mannitol). Addition of ribitol led to increased levels of mannitol (at all temperatures), while ribitol, arabitol and fructose showed either no or insignificant change. In control and ribitol-treated lichens, lowest mannitol content was found at -5 deg C. The results were attibuted to altered utilization of polyols at freezing te

Druh

O - Ostatní výsledky

CEP obor

EF - Botanika

OECD FORD obor

—

Projekt

<a href="/cs/project/KJB601630808" target="_blank" >KJB601630808: Účinky chladu a mrazu na fotosyntézu lišejníkových symbiotických řas ovlivněných ribitolem.</a><br>

Návaznosti

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

Rok uplatnění

2009

Kód důvěrnosti údajů

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