Bacteria collected from wild NG2 or PB plants were diluted to 3.5 and 1.45 cells/seedling and inoculated onto germinating NG2, PB, or Col-0 plants. Bar chart showing taxonomy of 30 random colonizers from each treatment (31 for PB PB). Taxonomy is grouped at the order level, taxonomy at the genus level and associated statistics can be found in Figure S1 and Table S2. Detailed data on numbers of plants inoculated and colonized are found in Table S1