Fig. 6
From: Bio-accelerated weathering of ultramafic minerals with Gluconobacter oxydans
Bioleaching efficiency of magnesium increased by an average of 12% when leaching with a high performing G. oxydans mutant. The G. oxydans mutant contains a deletion of pstS phosphate signaling and transport gene, alongside up-regulation of the mgdh gene that codes for the Membrane-bound Glucose DeHydrogenase (MGDH) with the P112 promoter (G. oxydans ΔpstS, P112:mdgh). Leaching was done with dunite at 1% pulp density shaking at 22 °C over 96 h. Stars and dots denote a statistically significant difference between wild-type G. oxydans and G. oxydans ΔpstS, P112:mdgh mutant by a Welch’s two-sample t-test, where, p < 0.1 (.), p < 0.05 (*), p < 0.01 (**), p < 0.001 (***).
