TABLE 4.
Representation of the major eukaryotic groups identified from clone libraries of conducive and suppressive peat samples prior to conditioning (T0) and at the end of the damping-off bioassay from either uninoculated (T3u) or Pythium sylvaticum- inoculated (T3i) samples
| Phylogenetic groupa | Representation (%) within each peat sample
|
|||||
|---|---|---|---|---|---|---|
| Conducive
|
Suppressive
|
|||||
| T0 | T3u | T3i | T0 | T3u | T3i | |
| Ascomycota | 66 | 64 | 66 | 67 | 64 | 62 |
| Sordariomycetes | 41 | 35 | 38 | 40 | 39 | 31 |
| Acremonium | 33 | 32 | 33 | 32 | 32 | 26 |
| Other Ascomycota | 25 | 29 | 28 | 27 | 25 | 31 |
| Aspergillusb | 12 | 12 | 11 | 13 | 10 | 16 |
| Phialophora | 4 | 5 | 7 | 4 | 4 | 5 |
| Sclerotium | 8 | 7 | 4 | 7 | 5 | 5 |
| Basidiomycota | 13 | 14 | 11 | 14 | 18 | 20 |
| Hymenomycetes | 4 | 4 | 7 | 6 | 9 | 15 |
| Cryptococcus | 4 | 4 | 7 | 6 | 9 | 15 |
| Ustilaginomycetes | 9 | 10 | 4 | 8 | 9 | 5 |
| Exobasidium | 7 | 7 | 4 | 7 | 9 | 5 |
| Mesomycetozoa (protists) | 21 | 22 | 23 | 19 | 18 | 18 |
a
Identification was based on ≥90% sequence identity. Clone libraries from uninoculated T3 samples (T3u) were used to examine the effects of pathogen inoculation on phylogenetic groups potentially associated with suppression.
b
Sequences in this group also had high homology to Penicillium and related species.