Table 1.
Total Cd mobilization in the rhizosphere soils and the soluble sugar, dissolved organic carbon (DOC), and low-molecular-weight organic acids (LMWOAs) contents in the rhizosphere soil solution after exogenous glycinebetaine treatment.
| GB/mM | Cdtotal (µg pot−1) | Rhizosphere Soil Solution | ||
|---|---|---|---|---|
| DOC (µg g−1 DW) |
LMWOAs (µg g−1 DW) |
Soluble Sugar (µg kg−1 DW) |
||
| 0 | 1.02 ± 0.02d | 64.5 ± 1.01d | 1.24 ± 0.14d | 6.14 ± 0.21d |
| 5 | 1.63 ± 0.01c | 82.0 ± 1.23c | 3.65 ± 0.11c | 12.0 ± 0.10c |
| 10 | 1.77 ± 0.04a | 90.1 ± 0.80b | 5.75 ± 0.29a | 15.3 ± 0.45b |
| 50 | 1.69 ± 0.02b | 93.1 ± 0.20a | 4.51 ± 0.21b | 16.2 ± 0.19a |
| GB average | 1.70 | 88.4 | 4.64 | 14.5 |
| GB average/0 (fold) | 1.66 | 1.37 | 3.73 | 2.36 |
GB: glycinebetaine. Different lowercase letters indicate significant difference in the column (ANOVA Duncan test, p < 0.05). The number of each group sample was five (n = 5). Values are presented as means ± SD.