title: RIM15 antagonistic pleiotropy is responsible for differences in fermentation and stress response kinetics in budding yeast.
abstract: Different natural yeast populations have faced dissimilar selective pressures due to the heterogeneous fermentation substrates available around the world; this increases the genetic and phenotypic diversity in Saccharomyces cerevisiae In this context, we expect prominent differences between isolates when exposed to a particular condition, such as wine or sake musts. To better comprehend the mechanisms underlying niche adaptation between two S. cerevisiae isolates obtained from wine and sake fermentation processes, we evaluated fermentative and fungicide resistance phenotypes and identify the molecular origin of such adaptive variation. Multiple regions were associated with fermentation rate under different nitrogen conditions and fungicide resistance, with a single QTL co-localizing in all traits. Analysis around this region identified RIM15 as the causative locus driving fungicide sensitivity, together with efficient nitrogen utilization and glycerol production in the wine strain. A null RIM15 variant confers a greater fermentation rate through the utilization of available glucose instead of its storage. However, this variant has a detrimental effect on fungicide resistance since complex sugars are not synthesized and transported into the membrane. Together, our results reveal the antagonist pleiotropic nature of a RIM15 null variant, positively affecting a series of fermentation related phenotypes, but apparently detrimental in the wild.
authors.affiliation: Centro de Estudios en Ciencia y Tecnología de Alimentos (CECTA), Universidad de Santiago de Chile (USACH), Santiago 9170201, Chile.
authors.forename: Eduardo I
authors.initials: EI
authors.lastname: Kessi-Pérez
authors.affiliation: Centro de Estudios en Ciencia y Tecnología de Alimentos (CECTA), Universidad de Santiago de Chile (USACH), Santiago 9170201, Chile.
authors.forename: Sebastián
authors.initials: S
authors.lastname: Araos
authors.affiliation: Centro de Estudios en Ciencia y Tecnología de Alimentos (CECTA), Universidad de Santiago de Chile (USACH), Santiago 9170201, Chile Departamento de Ciencia y Tecnología de los Alimentos, Universidad de Santiago de Chile (USACH), Santiago 9170201, Chile.
authors.forename: Verónica
authors.initials: V
authors.lastname: García
authors.affiliation: Millennium Nucleus for Fungal Integrative and Synthetic Biology (MN-FISB), Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Casilla 114-D, Santiago 8331150, Chile.
authors.forename: Francisco
authors.initials: F
authors.lastname: Salinas
authors.affiliation: Centro de Estudios en Ciencia y Tecnología de Alimentos (CECTA), Universidad de Santiago de Chile (USACH), Santiago 9170201, Chile.
authors.forename: Valentina
authors.initials: V
authors.lastname: Abarca
authors.affiliation: Millennium Nucleus for Fungal Integrative and Synthetic Biology (MN-FISB), Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Casilla 114-D, Santiago 8331150, Chile.
authors.forename: Luis F
authors.initials: LF
authors.lastname: Larrondo
authors.affiliation: Centro de Estudios en Ciencia y Tecnología de Alimentos (CECTA), Universidad de Santiago de Chile (USACH), Santiago 9170201, Chile Departamento de Ciencia y Tecnología de los Alimentos, Universidad de Santiago de Chile (USACH), Santiago 9170201, Chile.
authors.forename: Claudio
authors.initials: C
authors.lastname: Martínez
authors.affiliation: Centro de Estudios en Ciencia y Tecnología de Alimentos (CECTA), Universidad de Santiago de Chile (USACH), Santiago 9170201, Chile Millennium Nucleus for Fungal Integrative and Synthetic Biology (MN-FISB), Departamento de Genética Molecular y Microbiología, Facultad de Ciencias Biológicas, Pontificia Universidad Católica de Chile, Casilla 114-D, Santiago 8331150, Chile francisco.cubillos.r@usach.cl.
authors.forename: Francisco A
authors.initials: FA
authors.lastname: Cubillos
mesh_terms: D000434:Alcoholic Beverages / Q000382:microbiology*; D025141:Drug Resistance, Fungal; D005285:Fermentation; D005659:Fungicides, Industrial / Q000378:metabolism; D017353:Gene Deletion; D011494:Protein Kinases / Q000235:genetics* / Q000378:metabolism*; D012441:Saccharomyces cerevisiae / Q000235:genetics / Q000302:isolation & purification / Q000502:physiology*; D029701:Saccharomyces cerevisiae Proteins / Q000235:genetics* / Q000378:metabolism*; D013312:Stress, Physiological
chemical_list: D005659:Fungicides, Industrial; D029701:Saccharomyces cerevisiae Proteins; D011494:Protein Kinases; C410736:Rim15 protein, S cerevisiae
keywords: QTL; RIM15; Saccharomyces cerevisiae; fermentation; fungicide; natural variation