Table 3.
Co‐occurrence table of the number of times that operational taxonomic units co‐occurred within single root nodules.
| Bacterial OTUs | Taxa | Number of occurrences |
|---|---|---|
| 1 and 10 | Pseudomonas sp. and Burkholderia sp. | 1 S |
| 1 and 11 | Pseudomonas sp. ansd Bacillus sp. | 1 S |
| 1 and 15 | Pseudomonas sp. and Pseudomonas sp. | 1 R |
| 1 and 19 | Pseudomonas sp. and Psychrobacillus sp. | 1 R |
| 1, 2, and 8 | Pseudomonas sp., Pseudomonas sp., and Bacillus sp. | 1 S |
| 1, 2, and 11 | Pseudomonas sp., Pseudomonas sp., and Bacillus sp. | 1 S |
| 2 and 3 | Pseudomonas sp. and Pseudomonas sp. | 2 S |
| 2 and 9 | Pseudomonas sp. and Burkholderia sp. | 1 S |
| 2 and10 | Pseudomonas sp. and Burkholderia sp. | 1 R |
| 2 and 16 | Pseudomonas sp. and Pseudomonas sp. | 1 R |
| 3 and 5 | Pseudomonas sp. and Pseudomonas sp. | 1 S |
| 3 and 9 | Pseudomonas sp. and Burkholderia sp. | 3 R,S |
| 4 and 13 | Pseudomonas sp. and Collimonas sp. | 1 R |
| 4 and 18 | Pseudomonas sp. and Pseudomonas sp. | 1 S |
| 4 and 20 | Pseudomonas sp. and Pseudomonas sp. | 1 R |
| 6 and 7 | Pseudomonas sp. and Pseudomonas sp. | 1 R |
| 8 and 16 | Bacillus sp. and Pseudomonas sp. | 1 R |
| Fungal OTUs | Taxa | Number of occurrences |
|---|---|---|
| 2 and 7 | Vibrisseaceae and Helotiaceae | 1 S |
| Bacterial (B) and Fungal (F) OTUs | Taxa | Number of occurrences |
|---|---|---|
| B1 and F2 | Pseudomonas sp. and Vibrisseaceae | 2 S |
| B1 and F8 | Pseudomonas sp. and Helotiales | 1 S |
| B2 and F1 | Pseudomonas sp. and Sporothrix guttuliformis | 1 S |
| B2 and F3 | Pseudomonas sp. and Ilyonectria destructans | 1 R |
| B2 and F4 | Pseudomonas sp. and Helotiales | 1 R |
| B5 and F5 | Pseudomonas sp. and Gibberella sp. | 1 R |
| B5 and F15 | Pseudomonas sp. and Trichoderma | 1 S |
| B6, B7, and F10 | Pseudomonas sp., Pseudomonas sp., and Nectria ramulariae | 1 R |
| B7 and F20 | Pseudomonas sp. and Coniochaeta sp | 1 S |
| B15 and F3 | Pseudomonas sp. and Ilyonectria destructans | 1 R |
| B22 and F9 | Pseudomonas sp. and Helotiaceae | 1 S |
| B24 and F3 | Pseudomonas sp. and Ilyonectria destructans | 1 R |
Note: Each row represents one root nodule. The single row highlighted in grey indicates operational taxonomic units that cooccurred in both red and Sitka alder. Exponents in the number of occurrences indicate host species (R is red alder and S is Sitka alder).
Abbreviation: OTUs, operational taxonomic units.