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  • 1Instituto de Ciencias de la Vid y del Vino (CSIC, Gobierno de la Rioja, Universidad de La Rioja), Finca La Grajera, Carretera de Burgos, km 6, Logroño, La Rioja, 26071, Spain.

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Saccharomyces cerevisiae is the primary wine yeast due to its evolutionary history and ability to thrive in fermentation. Research explores its traits and genetic diversity to meet modern oenology challenges.

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Area of Science:

  • * Oenology and Microbiology
  • * Yeast Genetics and Physiology

Background:

  • * Saccharomyces cerevisiae is the dominant wine yeast, historically used in commercial starters.
  • * Its dominance is attributed to the Crabtree effect and anaerobic growth capabilities.
  • * Not all S. cerevisiae strains are equally effective for wine fermentation.

Purpose of the Study:

  • * To review the physiological and genetic traits of S. cerevisiae wine strains.
  • * To examine evolutionary factors shaping these yeast strains.
  • * To discuss strategies for increasing yeast diversity in oenology.

Main Methods:

  • * Review of existing literature on Saccharomyces cerevisiae wine strains.
  • * Analysis of physiological and genetic characteristics.
  • * Examination of evolutionary and environmental influences.

Main Results:

  • * S. cerevisiae possesses unique traits (Crabtree effect, anaerobic growth) for wine fermentation.
  • * Limited genetic diversity in S. cerevisiae poses challenges for oenology.
  • * Tools like genetic engineering and inclusion of other yeast species can enhance diversity.

Conclusions:

  • * Understanding S. cerevisiae evolution and physiology is crucial for modern oenology.
  • * Increasing yeast genetic diversity is key to addressing future challenges like climate change.
  • * Yeast biotechnology advancements will continue to support oenological innovation.