Different Gene Expression Patterns of Hexose Transporter Genes Modulate Fermentation Performance of Four Saccharomyces cerevisiae Strains

In Saccharomyces cerevisiae, the fermentation rate and ability to complete sugar transformation process depend on glucose fructose transporter set-up. Hexose transport mainly occurs via facilitated diffusion carriers these are encoded by HXT gene family GAL2. addition, FSY1, coding a fructose/H+ symporter, was identified in some wine strains. This little-known could be relevant last part of when is most abundant sugar. this work, we investigated expression hexose transporters during late phase, means qPCR. Four S. cerevisiae strains (P301.9, R31.3, R008, isolated from vineyard, commercial EC1118) were considered levels determined evaluate how strain pattern modulated process. The very low global poor performance R008 suggested that overall level determinant obtain total consumption. Each showed specific profile strongly variable. led rethinking importance HXT3 previously play major role transport. vineyard strains, other genes, such as HXT6/7, HXT8, higher levels, resulting patterns properly supported