Fig. 4

Taxonomic structure of bulk soil fungal communities across the phases in the PSF experiment. The bar plots show the relative proportion of abundances numbers for the top 15 fungal genera in three soil origins across the phases of the PSF experiment. The soil origins from left to right are ranked by increased host density of the former system. Abbreviations: M0, only maize system; WM, wheat–maize rotation system; WMS, wheat–maize–soybean rotation system; 1, phase 1 (original soils); 2, phase 2 (conditioning phase); 3W, wheat-conditioned in the phase 3 (feedback phase); 3 M, maize-conditioned in the phase 3 (feedback phase); 3S, soybean-conditioned in the phase 3 (feedback phase)