Table 1.

Negative correlations between clusters of co-occurring OTUs.

	Cluster Bt	Cluster Bs	Cluster D	Cluster R
Bt	-	Gp4_u Otu215; Gp6_u Otu394 Marmoricola Otu406 Microlunatus Otu114 Actinobacteria_u Otu048, Otu301 Ohtaekwangia_u Otu068 Clostridiaceae_1_u Otu306 Steroidobacter Otu344 Gammaproteobacteria_u Otu254	Gp6_u Otu275	Ilumatobacter Otu413 Gaiella Otu367
Bs	Ilumatobacter Otu267 Agromyces Otu041, Otu420 Marmoricola Otu329 Gaiella Otu066, Otu109 Bacteria_u Otu098, Otu248	-	Gp11_u Otu128 Ilumatobacter Otu153 Gaiella Otu120 Latescibacteria_u Otu364	Gp6_u Otu236 Actinobacteria_u Otu020 Bacteria_u Otu030, Otu371
D	Microbacterium Otu141 Salinibacterium Otu046 Marmoricola Otu040 Nocardioidaceae_u Otu167 Flavobacterium Otu017, Otu287, Otu580 Aeromonas Otu088 Buttiauxella Otu232 Luteolibacter Otu083, Otu514	Ilumatobacter Otu078 Microbacteriaceae_u Otu144 Microlunatus Otu179 Ferruginibacter Otu253 Terrimonas Otu366 Chitinophagaceae_u Otu073	-	Flavobacterium Otu016, Otu252, Otu493 Ferruginibacter Otu157, Otu253 Bacteroidetes_u Otu459
R	Aeromicrobium Otu097 Streptomyces Otu283	Bradyrhizobiaceae_u Otu029	Steroidobacter Otu106	-

The most important OTUs of each cluster (row) responsible for minimal 20% of all negative correlations to another cluster (column) are listed. R, rhizosphere; D, drilosphere; Bs, bulk subsoil; Bt, bulk topsoil.