Fig. 3: Characterisation of weathering potential for Collimonas pratensis PMB3(1) and its mutants. | npj Materials Degradation

Fig. 3: Characterisation of weathering potential for Collimonas pratensis PMB3(1) and its mutants.

From: Mineral weathering by Collimonas pratensis PMB3(1) as a function of mineral properties, solution chemistry and carbon substrate

Fig. 3

A Chelating ability. The Collimonas pratensis strain PMB3(1) and its mutants (i.e. ∆gmc, ΔNRPS and ∆gmcΔNRPS) were tested for the ability to mobilize iron from the Fe-CAS complex. The halo diameters and colony diameters on CAS agar plate were scored after 7-days incubation on solid medium. The Fig. 3A presents the ratio between halo diameter and colony diameter. B Acidifying ability. The same strains were tested for their ability to acidify the culture medium. After 2-days incubation in the TCP liquid medium the pH of the supernatant was scored. The error bars indicate standard deviations. For the ratio (halo /colony) diameter and the pH measurements, different letters above the bars indicate that the values are significantly different according to a one-factor (strain) ANOVA and TukeyHSD tests P-value < 0.05.

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