Table 2.
Bacterial quantification and ratio analyses.
| Treatment | Culture | qPCR | (Ratio) | |||||
|---|---|---|---|---|---|---|---|---|
| Total bacteria | Total bacteria | Burkholderia | Collimonas | Pseudomonas | T/B | T/C | T/P | |
| T1-Ct | 6.50a | 7.94a | 6.06a | 6.03d | 6.03a | 76.63b | 86.80a | 81.93a |
| T1 + K | 6.38a | 7.77a | 5.49b | 5.47ab | 5.56a | 191.67a | 204.67ab | 234.97a |
| T1 + Mg | 6.11a | 7.68a | 5.52b | 5.31abc | 5.38b | 150.27ab | 249.67ab | 207.33a |
| T3-Ct | 6.42a | 7.59a | 5.74b | 5.71ad | 5.44b | 80.10b | 79.83a | 150.67a |
| T3 + K | 6.06a | 7.75a | 5.58b | 5.07bc | 5.40b | 150.00ab | 494.33ab | 224.00a |
| T3 + Mg | 6.11a | 7.74a | 5.51b | 4.93c | 5.52b | 170.67a | 717.33b | 173.00a |
Quantification done by dilution/plating or quantitative PCR are expressed as Log[cfu g−1 of soil] and Log[16S rRNA gene copies g−1 of soil], respectively. The data presented are mean values of 3 replicates. Ratio analyses (i.e., T/B: ratio Total bacteria/Burkholderia; T/P: ratio Total bacteria/Pseudomonas; T/C: ratio Total bacteria/Collimonas) have been done on the non-log transformed data. Treatments presenting different letters (a,b,c,d) are significantly different according to a one-factor ANOVA and Tukey post-hoc test (P < 0.05). Treatments are presented as follows: Ct, control; +Mg, Mg fertilized and +k, K fertilized. For legibility reasons, the standard error values are not presented.