Traits
For the present analysis, we used data where all species were grown at controlled conditions (batch cultivation) of media and temperature (25ºC), and traits are presented in standardized units to dry biomass. Aerobic batch cultivation (strain identity provided in Material and Methods of the original reference) was used for growing all strains under the same conditions (25ºC, standard YPD liquid medium, constant agitation), and the rate of production of metabolites was recorded with high-performance liquid chromatography (HPLC). Detailed explanations of the methods used to obtain every data are provided in the original reference (Hagman et al., 2013). We selected the traits that pertain to the objectives of this study, namely: ethanol yield (EthY: grams of ethanol produced per gram of glucose consumption), respiratory quotient (RQ: ratio between CO2 production and O2consumption, dimensionless), glycerol production (Gly: grams of glycerol produced per gram of increment in biomass, per hour). What we called growth rate here represents just a measure of performance under common conditions, and it was calculated as the rate of vegetative growth from biomass measurements and the initiation and the end of the experiment (in dry weight).