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National Repository of Grey Literature 2 records found  Search took 0.00 seconds. 
Selekce kmenů zelené řasy Scenedesmus quadricauda rezistentních vůči selenu
 Umysová, Dáša ; Hlavová, Monika ; Vítová, Milada ; Doušková, Irena ; Bišová, Kateřina ; Zachleder, Vilém
Three mutant strains of the green alga Scenedesmus quadricauda were selected to be specifically resistant to the presence of high concentration of inofganic Se. The growth curves at the presence of various concentrations of selenite, selenate or misture of both compounds were monitored.
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Aktivita thioredoxin reduktázy v divokém a selen rezistentích kmenech řasy Scenedesmus quadricauda rostoucích v přítomnosti anorganických sloučenin selenu
 Vítová, Milada ; Umysová, Dáša ; Doušková, Irena ; Rucki, M. ; Zachleder, Vilém
We have selected resistant strains of Scenedesmus quadricauda able to tolerate high selenium concentration up to 400 mg/L added either as selenate Na2SeO4 (strain SeVI) or selenite Na2SeO3 (strain SeIV). We have investigated activity of selenoprotein thioredoxin reductase (TR) in both wild type and Se-resistant strains. Concomitantly, a total amount of organically bound selenium was evaluated in biomass dry weight. We have found that activity of TR rapidly increases in the SeVI resistant strain in the presence of selenate, while no effect on TR activity was found in SeIV resistant strain and only slight increase in wild type in the presence of selenite
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