GSE96829
Transcriptome reshaping of the evolved thermotolerant Saccharomyces cerevisiae strain compared with the parental strain by RNA-Seq
Elevated thermotolerance is an important desired property of Saccharomyces cerevisiae for its industrial applications. Here, adaptive laboratory evolution experiments were employed to further improve the thermotolerance of an industrial strain ScY. The resulting evolved strain showing enhanced thermotolerance was named ScY01. We sequenced mRNA from the cultures of the evolved strain ScY01 and the parental strain ScY grown on YP medium containing 200 g/l glucose at 40ºC at 200 rpm for 14 h ~ 16 h to the early-log phase. Differences in gene expression in ScY01 versus ScY revealed by RNA deep sequencing revealled that genes involved into glycolysis, amino acid biosynthesis and translation showed increased gene expressions, whereas mitochondrial translation and respiration associated genes showed decreased gene expressions. This suggested that the evolved strain might suppress its mitochondrial respiratory activity but boost its fermentation capacity, thereby providing enough ATP required for its more active energy-consuming pathways including amino acid and protein biosynthetic pathways. Overall design: mRNA levels in Saccharomyces cerevisiae strain ScY and ScY01 was examined by RNA-Seq without replication