Table 4.
Genetic and ecological characteristics of three putative endemic Polynucleobacter taxa. All data are based on isolated representatives
| Taxon | Number of strains | Number of haplotypes |
Minimum similarity (%) |
Nucleotide diversity Pi |
pH range | Maximum distance |
|||
|---|---|---|---|---|---|---|---|---|---|
| ITS | glnA | ITS | glnA | ITS | glnA | (km) | |||
| Pantropical clade | 21 | 15 | 19 | 97.3 | 86.1 | 0.01005 | 0.07798 | 5.7–8.2 | 17234 |
| F15 | 20 | 5 | 8 | 99.2 | 98.8 | 0.00272 | 0.00199 | 4.2–7.2 | 3264 |
| Antarctic clade | 10 | 5 | 5 | 97.9 | 85.2 | 0.00881 | 0.0621 | 6.8–8.5 | 10 (222)a |
a
Maximum distance of sites of origin of cultivated strains is 10 km, maximum distance between sites of detection is 222 km.
Maximum distance and pH range refer to habitats from which strains affiliated with the taxa were obtained. See Supporting Information Fig. S2 for estimated range limits of each of the three taxa.