Functional Analysis of the FZF1 Genes of Saccharomyces uvarum

Frontiers in Microbiology
Xiaozhen LiuHanyao Zhang

Abstract

Being a sister species of Saccharomyces cerevisiae, Saccharomyces uvarum shows great potential regarding the future of the wine industry. The sulfite tolerance of most S. uvarum strains is poor, however. This is a major flaw that limits its utility in the wine industry. In S. cerevisiae, FZF1 plays a positive role in the transcription of SSU1, which encodes a sulfite efflux transport protein that is critical for sulfite tolerance. Although FZF1 has previously been shown to play a role in sulfite tolerance in S. uvarum, there is little information about its action mechanism. To assess the function of FZF1, two over-expression vectors that contained different FZF1 genes, and one FZF1 silencing vector, were constructed and introduced into a sulfite-tolerant S. uvarum strain using electroporation. In addition, an FZF1-deletion strain was constructed. Both of the FZF1-over-expressing strains showed an elevated tolerance to sulfite, and the FZF1-deletion strain showed the opposite effect. Repression of FZF1 transcription failed, however, presumably due to the lack of alleles of DCR1 and AGO. The qRT-PCR analysis was used to examine changes in transcription in the strains. Surprisingly, neither over-expressing strain promoted SSU1 tra...Continue Reading

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Citations

Dec 13, 2019·Royal Society Open Science·Shengxing LiHanyao Zhang

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Datasets Mentioned

BETA
KY905342
KY905343
ACY338

Methods Mentioned

BETA
PCR
RNA-Seq

Software Mentioned

Excel
DEGseq
DESeq

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