期刊
BIOTECHNOLOGY LETTERS
卷 36, 期 3, 页码 523-529出版社
SPRINGER
DOI: 10.1007/s10529-013-1375-3
关键词
Ethanol; Glycerol; Glycerol-3phosphate dehydrogenase; Overlap PCR; Saccharomyces cerevisiae
资金
- Key Laboratory of Sugarcane Biology and Genetic Breeding of the Ministry of Agriculture
- Construction of Modern Agricultural Technology Systems of China [CARS-20-4-4]
Transcription of the gene coding for glycerol-3-phosphate dehydrogenase (GPD1) was repressed in an industrial strain of Saccharomyces cerevisiae using a silencing vector. A fusion fragment containing GPD1 and Kan MX genes was generated by overlap extension PCR, then, the vector, pYES2.0 GPD1/Kan MX, was constructed by inserting the fusion fragment into the S. cerevisiae plasmid, pYES2.0. pYES2.0 GPD1/Kan MX, was linearized by KpnI, transformed into S. cerevisiae using the PEG/LiAc/ssDNA method, and integrated into the S. cerevisiae chromosome. GPD1 silencing gave 20 % less glycerol-3-phosphate dehydrogenase activity, 19 % lower glycerol production, and 9.7 % higher ethanol production compared with the original strain. These findings further the development of industrial S. cerevisiae strains with improved ethanol production and reduced glycerol content for the efficient production of bio-ethanol.
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