2017
Ascorbic acid affects short-term response of Scenedesmus quadricauda to cadmium excess
KOVÁČIK, Jozef, Bořivoj KLEJDUS, Petr BABULA a Josef HEDBAVNYZákladní 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.