1. Distribution of the bacterial taxa that exhibit the greatest log fold changes in mean relative abundance.
Distribution of the bacterial taxa that exhibit the greatest log fold changes in mean relative abundance. Heat maps show the log2 fold changes of the top 50 taxa that either increase (shown in red hues) or decrease (shown in blue hues) (a) once exposed to a preservation method (for 1 week at −20°C and a few hours in the other preservatives) and (b) over time within a preservation method (from left to right: 1, 4, and 8 weeks, except for −20°C, for which the 4- and 8-week time points are shown). Taxa are grouped by bacterial phyla (A, Actinobacteria; B, Bacteroidetes; C, Cyanobacteria; F, Firmicutes; L, Lentisphaeria; P, Proteobacteria) and colored by bacterial class. (c) A line graph shows the total fraction of OTUs that show a greater than 10-fold change in relative abundance for each stabilization method at each time point compared to the fresh sample. 70etoh and 95etoh, 70% and 95% ethanol, respectively.
Se Jin Song et al. mSystems 2016; doi: /mSystems