Table 1.
Mycorrhizal colonization and growth parameters in roots of Thymus vulgare grown under normal conditions (control) or the effect of eCO2 (620 ppm), arbuscular mycorrhizal fungi (AMF) or their combination (AMF-eCO2). Values are mean ± standard error of five independent replicates. Asterisks indicate significant changes (*** p < 0.001) between AMF alone and the combined AMF+eCO2 treatment.
| Metabolite | Control | eCO2 | AMF | AMF + eCO2 |
|---|---|---|---|---|
| Colonization (% root) |
nd | nd | 33.06 ± 2.39 | 54.04 ± 1.11 *** |
| Hyphal length (cm g−1 soil) |
nd | nd | 12.94 ± 5.82 | 19.10 ± 9.74 b *** |
| Number of arbuscules (no. cm−1 root) |
nd | nd | 4.78±0.27 | 5.03 ± 0.18 |
nd = not detected.