Підвищення термотолерантності промислових спиртових дріжджів шляхом дерепресії генів синтезу трегалози

Aims. The aim of this work is the elevation of the thermotolerance and improvement the efficiency of high temperature alcoholic fermentation of yeast S. cerevisiae by overexpression of the genes TPS1 and TPS2. Methods. For overexpression of trehalose-6-phosphate synthase and trehalose-6-phosphate ph...

Full description

Saved in:
Bibliographic Details
Published in:Фактори експериментальної еволюції організмів
Date:2014
Main Authors: Лужецький, Т.Б., Семкін, М.В., Кшановська, Б.В., Дмитрук, К.В., Сибірний, А.А.
Format: Article
Language:Ukrainian
Published: Інститут молекулярної біології і генетики НАН України 2014
Subjects:
Online Access:https://nasplib.isofts.kiev.ua/handle/123456789/178245
Tags: Add Tag
No Tags, Be the first to tag this record!
Journal Title:Digital Library of Periodicals of National Academy of Sciences of Ukraine
Cite this:Підвищення термотолерантності промислових спиртових дріжджів шляхом дерепресії генів синтезу трегалози / Т.Б. Лужецький, М.В. Семкін, Б.В. Кшановська, К.В. Дмитрук, А.А. Сибірний // Фактори експериментальної еволюції організмів: Зб. наук. пр. — 2014. — Т. 15. — С. 95-99. — Бібліогр.: 7 назв. — укр.

Institution

Digital Library of Periodicals of National Academy of Sciences of Ukraine
Description
Summary:Aims. The aim of this work is the elevation of the thermotolerance and improvement the efficiency of high temperature alcoholic fermentation of yeast S. cerevisiae by overexpression of the genes TPS1 and TPS2. Methods. For overexpression of trehalose-6-phosphate synthase and trehalose-6-phosphate phosphatase the vector for multicopy integration was constructed, where ORFs of TPS1 and TPS2 genes were placed under the control of strong constitutive promoter ADH1. The resulting vector was linearized and used for transformation of S. cerevisiae industrial strains. Results. Recombinant strains overexpressing genes for trehalose synthesis possessed increased intracellular concentration of trehalose. Thermotolerance and efficiency of high temperature alcoholic fermentation of the constructed strains were increased. Conclusions. Recombinant strains with higher intracellular trehalose concentration produce 17% more ethanol during fermentation at 42°C. Constructed strains are promising for industrial implementation. Key words: alcoholic fermentation, S. cerevisiae, thermotolerance, trehalose.
ISSN:2219-3782