Table 3.
Foliar carbon (C), nitrogen (N) and stable isotopes δ13C and δ15N of plants grown in well-watered and drought conditions, without (−) and with (+) inoculation treatments
| C (mg g−1) | N (mg g−1) | δ13C (‰) | δ15N (‰) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| Well-watered | Drought | Well-watered | Drought | Well-watered | Drought | Well-watered | Drought | ||
| A. pulchella (n = 5) | − | 450.3 ± 2.1 | 451.8 ± 3.0 | 20.9 ± 0.7 | 23.7 ± 4.9 | −32.19 ± 0.45b | −30.79 ± 0.11a | −1.30 ± 0.26 | −0.48 ± 0.11 |
| + | 449.3 ± 4.1 | 447.0 ± 6.3 | 21.5 ± 2.8 | 17.8 ± 2.6 | −31.84 ± 0.22ab | −31.60 ± 0.11ab | −1.06 ± 0.46 | −0.74 ± 0.13 | |
| A. cygnorum (n = 5) | − | 470.0 ± 3.8a | 462.4 ± 3.5ab | 4.5 ± 2.1 | 3.9 ± 0.9 | −32.64 ± 0.29 | −31.97 ± 0.29 | 1.02 ± 0.36 | 1.18 ± 0.12 |
| + | 472.2 ± 2.6a | 454.0 ± 2.9b | 3.1 ± 1.4 | 1.3 ± 0.4 | −32.45 ± 0.19 | −31.77 ± 0.47 | 1.13 ± 0.27 | 0.44 ± 0.25 | |
| A. fraseriana (n = 5) | − | 453.0 ± 0.64 | 459.3 ± 0.4 | 3.8 ± 0.8 | 4.2 ± 0.7 | −30.59 ± 0.48 | −30.80 ± 0.64 | −0.48 ± 0.65 | 0.17 ± 0.35 |
| + | 460.4 ± 0.5 | 460.8 ± 1.3 | 3.8 ± 1.8 | 3.8 ± 0.9 | −31.33 ± 0.18 | −30.04 ± 0.15 | −1.15 ± 0.83 | 0.31 ± 0.50 | |
| A. manglesii (n = 5) | − | 389.1 ± 6.1 | 400.6 ± 4.2 | 3.4 ± 0.7 | 5.0 ± 1.3 | −29.28 ± 0.11 | −28.47 ± 0.16 | −0.06 ± 0.14 | 0.50 ± 0.23 |
| + | 393.3 ± 4.4 | 406.0 ± 2.7 | 3.4 ± 0.6 | 4.7 ± 0.2 | −29.96 ± 0.54 | −29.24 ± 0.38 | 0.35 ± 0.14 | 0.27 ± 0.29 | |
| B. attenuata (n = 5) | − | 469.4 ± 0.3 | 466.7 ± 9.8 | 2.3 ± 0.3 | 2.9 ± 0.4 | −30.56 ± 0.48 | −30.59 ± 0.09 | 0.41 ± 0.26 | 1.68 ± 0.31 |
| + | 463.7 ± 1.2 | 475.8 ± 4.3 | 3.6 ± 0.9 | 3.1 ± 0.8 | −30.62 ± 0.61 | −31.07 ± 0.54 | 0.98 ± 0.22 | 1.42 ± 0.47 | |
| B. menziesii (n = 5) | − | 487.0 ± 4.0 | 481.1 ± 1.4 | 3.7 ± 0.9 | 3.5 ± 1.0 | −31.09 ± 0.40 | −30.95 ± 0.11 | 0.75 ± 0.84 | 1.12 ± 0.67 |
| + | 483.5 ± 6.3 | 490.4 ± 5.0 | 3.6 ± 1.3 | 2.5 ± 0.1 | −30.89 ± 0.23 | −30.98 ± 0.09 | 0.78 ± 0.07 | 1.60 ± 0.21 | |
| E. todtiana (n = 6) | − | 481.8 ± 5.2 | 486.4 ± 4.2 | 3.5 ± 0.5 | 2.8 ± 0.6 | −30.55 ± 0.53 | −30.51 ± 0.63 | −3.50 ± 0.33 | −2.20 ± 0.46 |
| + | 482.0 ± 4.2 | 475.9 ± 4.0 | 2.2 ± 0.2 | 3.4 ± 0.6 | −31.72 ± 0.42 | −29.35 ± 1.03 | −2.58 ± 0.57 | −2.96 ± 0.57 | |
| H. subvaginata (n = 4) | − | 399.3 ± 5.9b | 427.5 ± 3.0a | 5.0 ± 2.4 | 4.5 ± 0.7 | −32.70 ± 0.27 | −31.21 ± 0.41 | 2.27 ± 0.65 | 1.87 ± 0.39 |
| + | 432.2 ± 4.7a | 426.0 ± 7.7a | 3.2 ± 1.2 | 4.5 ± 0.9 | −31.27 ± 0.38 | −32.14 ± 0.92 | 1.80 ± 0.38 | 2.41 ± 0.31 | |
Values presented are mean ± standard error. Different letters indicate significant differences between treatments at P < 0.05 (from ANOVA with post hoc Tukey’s HSD test).