Table 7.
Taxonomic classification of 18S sequences in microcosms with soil and leaf litter from Populus tremuloides.
| Mean proportion of sequencesa | ||||
|---|---|---|---|---|
| PTb (60 d) | GV (60 d) | HPc (60 d) | No litterd (0 d) | |
| Agaricomycetes | 8.7* | 3.7 | 3.4 | 41.9* |
| Basal fungal lineages | 4.4 | 7.4 | 2.0 | 7.4 |
| Chytridiomycetes | 0.0 | 0.0 | 0.0 | 0.7 |
| Dothideomycetes | 25.7 | 22.7 | 35.6 | 13.2* |
| Eurotiomycetes | 1.6 | 0.0 | 0.7 | 0.0 |
| Orbiliomycetes | 0.0 | 1.8 | 0.0 | 0.0 |
| Pucciniomycetes | 1.1 | 0.6 | 4.7* | 0.0* |
| Sordariomycetes | 13.1* | 5.5 | 0.7 | 5.1 |
| Tremellomycetes | 38.8 | 45.4 | 47.0 | 16.9* |
| Unclassified fungi | 2.3 | 1.2 | 0.0 | 2.2 |
| Others | ||||
| Metazoa | 4.3 | 9.2 | 2.7 | 8.1 |
| Rhizaria | 0.0 | 2.5 | 1.3 | 4.4 |
| Viridiplantae | 0.0 | 0.0 | 2.0 | 0.0 |
| Summary | ||||
| Ascomycetes | 40.4 | 30.1 | 36.9 | 18.4* |
| Basidiomycetes | 48.6 | 49.7 | 55.0 | 58.8 |
| Others | 10.9 | 20.2 | 8.1 | 22.8 |
PT, parental type litter (60d); GV, GUS vector; HP, high proanthocyanidin content.
Abbreviated soil types are followed by days of incubation.
Means in this column marked with an asterisk (*) are significantly different (P < 0.038) than the mean for microcosms with other incubated soils (i.e., treatment effect corresponding to the mean of GV and HP soils in same row) according to Poisson linear regression analysis.
Means in this column marked with an asterisk (*) are nearly significantly different (P = 0.051) than the mean for microcosms with other incubated soils (i.e., treatment effect corresponding to the mean of GV and PT soils in same row) according to Poisson linear regression analysis.
Means in this column marked with an asterisk (*) are significantly different (P < 0.042) than the mean for microcosms sampled 60 d later (i.e., incubation effect corresponding to the mean of other soils in the same row) according to Poisson linear regression analysis.