Table 2 Pearson correlation between rhizosphere bacteria (class) and soil parameters in different environments

Proteobacteria

-0.255

0.306

-0.325

-0.861

-0.993^b

0.972^a

0.570

0.751

Acidobacteria

0.424

-0.522

0.556

0.952^a

0.924

-0.890

-0.689

-0.551

Actinobacteria

-0.988^a

-0.071

-0.863

-0.702

-0.347

0.404

-0.096

0.216

Gemmatimonadetes

0.127

-0.228

0.184

0.779

0.989^a

-0.968^a

-0.537

-0.800

Verrucomicrobia`

0.868

0.330

0.602

0.413

0.159

-0.255

0.490

-0.273

Bacteroidetes

0.365

0.802

-0.008

-0.262

-0.314

0.197

0.942

-0.127

Chloroflexi

0.142

-0.246

0.204

0.791

0.990^a

-0.968^a

0.549

-0.790

Planctomycetes

0.221

-0.263

0.279

0.836

0.996^b

-0.977^a

-0.543

-0.780

Nitrospirae

0.365

-0.599

0.538

0.928

0.896

-0.849

-0.764

-0.485

Firmicutes

-0.984^a

0.162

-0.895

-0.776

-0.422

0.468

0.015

0.237

Cyanobacteria

0.448

0.482

-0.996^b

-0.738

-0.259

0.266

0.250

-0.097

Armatimonadetes

0.356

-0.439

0.465

0.924

0.962^a

-0.933

-0.649

-0.639