Figure 2. Mean relative abundance of major bacterial phyla across plant-present pots within T. triandra compartments over time. (a) Compartment and timpeoint included were the initial soil sampling period, soils at plant harvest, T. triandra rhizospheres at plant harvest, andT. triandra endospheres at plant harvest. Treatments include sterilisation (live, sterile), soil aridity (high, low aridity soils), and watering regime (water-stress as red text labels, control as blue text labels). Note: we did not sequence viable DNA from sterilised low aridity soils. (b) Differential abundance analysis comparing changes in phyla within each timpoint and compartment across treatments. Each category compares differences to a reference group (the high aridity, live, control soil treatment). Log fold changes for the reference groups identify differences from the grandmean of each phyla.