Table 3-A.
Phylogenetic composition of onion-associated bacteria
| Phylogeentic compositiona | Libraries (%) | |||
|---|---|---|---|---|
|
| ||||
| Site OA | Site OB | |||
|
|
|
|||
| Cb | UFb | C | UF | |
| Proteobacteria | 87.4 | 83.8 | 86.7 | 56.6** |
| Alphaproteobacteria | 81.6 | 73.0 | 7.8 | 38.2** |
| Methylobacterium | 2.3 | 13.5* | — | 11.8** |
| Phyllobacterium | 75.9 | 40.5** | 3.3 | 3.9 |
| Sphingomonas | 2.3 | 12.2* | 2.2 | 17.1** |
| Other genera | 1.1 | 6.8 | 2.3 | 5.4 |
| Betaproteobacteria | 4.6 | 6.8 | 7.8 | 5.3 |
| Burkholderia | — | 4.1 | — | 3.9 |
| Other genera | 4.6 | 2.7 | 7.8 | 1.4 |
| Gammaproteobacteria | 1.1 | 4.1 | 71.1 | 13.2** |
| Enterobacter | — | — | 38.9 | 7.9** |
| Pseudomonas | — | — | 17.8 | —** |
| Other genera | 1.1 | 4.1 | 14.4 | 5.3 |
| Firmicutes | 10.3 | 9.5 | 13.3 | 35.5** |
| Staphylococcus | 9.2 | 6.8 | 11.1 | 34.2** |
| Other genera | 1.1 | 2.7 | 2.2 | 1.3 |
| Actinobacteria | 2.3 | 6.8 | — | 7.9** |
a
16S rRNA gene sequences were classified by RDPII. The compositions of genera are shown for only dominant groups.
b
C and UF indicate the conventional and UF fertilization, respectively.
* and **
indicate significance at the 1 and 5% levels (P < 0.01 and P < 0.05), respectively, calculated with the Library Compare of RDP II, between the conventional and UF fertilizations (C and UF, respectively).