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Table 1 The physico-chemical properties and heavy metal contents of the soils

From: Genetic diversity and characterization of arsenic-resistant endophytic bacteria isolated from Pteris vittata, an arsenic hyperaccumulator

Sampling site pH WC (%) TN (g kg− 1) SOC (%) Cu (mg kg−1) Cd (mg kg− 1) Zn (mg kg− 1) Pb (mg kg− 1) As (mg kg− 1)
S1 7.55 ± 0.07c 6.26 ± 0.43a 0.25 ± 0.03a 4.76 ± 0.26a 0.12 ± 0.01c 0.07 ± 0.01e 53.4 ± 3.35d 15.6 ± 1.12e 5.36 ± 0.87c
S2 7.78 ± 0.02a 2.32 ± 0.62c 0.12 ± 0.02b 4.37 ± 0.08a 0.88 ± 0.05b 5.15 ± 0.52b 245.7 ± 2.97c 411.3 ± 10.3b 21.3 ± 1.23a
S3 7.71 ± 0.04b 2.88 ± 0.28c 0.10 ± 0.02b 4.23 ± 0.55a 3.40 ± 0.35a 7.99 ± 0.08a 790.4 ± 7.22a 882.5 ± 78.5a 24.5 ± 1.13a
S4 7.63 ± 0.03ab 4.73 ± 0.47b 0.11 ± 0.01b 4.10 ± 0.51a 0.53 ± 0.15b 1.12 ± 0.57d 367.9 ± 6.52b 258.2 ± 33.0c 10.8 ± 2.01b
S5 7.78 ± 0.02a 4.15 ± 0.55b 0.09 ± 0.01b 3.65 ± 0.06a 0.72 ± 0.16b 2.34 ± 0.18c 333.2 ± 45.3b 177.6 ± 15.3d 12.3 ± 0.85b
  1. Data are mean ± SE (n = 3); different letters in the same column indicate statistically significant differences (SNK test, P < 0.05). WC soil gravimetric water content; TN total nitrogen, SOC soil organic carbon