Yeast glucose consumption, ethanol production and growth rates.

<p>Different yeast species were studied for their carbon metabolism and the results are shown as: specific glucose consumption rate (g/g h^-1 amount of consumed glucose by 1 g of biomass and multiplied with the corresponding specific growth rate, shown in blue), specific ethanol production rate (g/g h^-1 ethanol produced by 1 g biomass and multiplied with the corresponding specific growth rate, shown in red), and specific growth rate (per hour, shown in green). Detailed results and biological replicates are shown in <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0068734#pone-0068734-t001" target="_blank">table 1</a> but hereby either a single measurement or an average of two replicates are presented. The yeast species are presented starting with the <i>Saccharomyces</i> genus at the top and then following a decreasing phylogenetic relationship, according to <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0068734#pone-0068734-g001" target="_blank">figure 1</a>. The species related the least to <i>S. cerevisiae</i> are at the bottom, and the gap divides the <i>Saccharomycotina</i> and non-<i>Saccharomycotina</i> yeasts. The four groups of yeasts (1, 2, 3 and 4) used in the statistical analysis are shown (see also <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0068734#pone-0068734-g003" target="_blank">figure 3</a>). Specific glucose consumption rate decreases with the phylogenetic distance from the <i>Saccharomyces</i> genus, indicating that Crabtree negative yeasts have only a moderate rate, while Crabtree positive have faster glucose consumption rate. On the other hand, the growth rate (in green) is very similar among all <i>Saccharomycotina</i> yeasts (see also <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0068734#pone-0068734-g005" target="_blank">figure 5</a> C and D).