J 2017

Ascorbic acid affects short-term response of Scenedesmus quadricauda to cadmium excess

KOVÁČIK, Jozef, Bořivoj KLEJDUS, Petr BABULA a Josef HEDBAVNY

Základní údaje

Originální název

Ascorbic acid affects short-term response of Scenedesmus quadricauda to cadmium excess

Autoři

KOVÁČIK, Jozef (703 Slovensko), Bořivoj KLEJDUS (203 Česká republika), Petr BABULA (203 Česká republika, garant, domácí) a Josef HEDBAVNY (203 Česká republika)

Vydání

Algal Research - Biomass Biofuels and Bioproducts, Amsterdam, Elsevier Science BV. 2017, 2211-9264

Další údaje

Jazyk

angličtina

Typ výsledku

Článek v odborném periodiku

Obor

10600 1.6 Biological sciences

Stát vydavatele

Nizozemské království

Utajení

není předmětem státního či obchodního tajemství

Impakt faktor

Impact factor: 3.745

Kód RIV

RIV/00216224:14110/17:00097482

Organizační jednotka

Lékařská fakulta

UT WoS

000404864600038

Klíčová slova anglicky

Antioxidants; Fluorescence microscopy; Heavy metals; Krebs cycle acids; Mass spectrometry

Štítky

Příznaky

Mezinárodní význam, Recenzováno
Změněno: 8. 3. 2018 11:12, Soňa Böhmová

Anotace

V originále

Impact of ascorbate biosynthetic inhibitor (lycorine, LYC) on short-term cadmium (Cd) action (1 h, 100 mu M) was studied in the green alga Scenedesmus quadricauda with 1 h or 24 h of LYC co-application. LYC suppressed Cd-induced increase in ascorbic acid and enhanced oxidative symptoms (ROS fluorescence) by modulating activities of antioxidative enzymes after 24 h of addition (decrease in superoxide dismutase, catalase and ascorbate peroxidase activities). Prolonged (24 h) exposure to LYC also affected content of Cd and quantitative changes of thiols (glutathione and phytochelatin 2) while Cd itself revealed interesting responses in algae maintained in the buffer for various time: these data indicate that in the studies involving axenic algal cultures, transfer of cells from sterile to non-sterile conditions modulates metal uptake. Among aliphatic organic acids, a-ketoglutaric, lactic and malic acids were variously influenced by Cd or lycorine, suggesting shift in the respiration and fermentation. It is concluded that ascorbic acid is involved in the protection of cells against Cd-induced ROS over-accumulation and metabolic changes were more expressive in the samples with 24 h co-application of LYC though side impacts of LYC cannot be excluded. DESI-Orbitrap MS for the identification and visualization of lycorine was also successfully tested here for the first time.