Table 1.
Diverse bacterial genera from isolates cultured in the Macrocystis pyrifera forest demonstrate alginate utilization.
| Genus | Isolates | Observed activity |
OTUs∗ | Reported alginate utilization | ||||
|---|---|---|---|---|---|---|---|---|
| Growth (obligate) | Growth (supplemented) | Degrade | Both | None | ||||
| Alteromonas | 35 | - | 9% | 34% | 11% | 46% | 16 | Sawabe et al., 1995; Iwamoto et al., 2001 |
| Cellulophaga | 9 | - | 0% | 11% | 67% | 22% | 7 | Martin et al., 2015; Zhu et al., 2016 |
| Cobetia | 9 | - | 44% | 22% | 11% | 22% | 6 | Martin et al., 2015; Gong et al., 2016 |
| Colwellia | 3 | - | 33% | 33% | 33% | 0% | 3 | ∧This study |
| Formosa | 1 | - | 0% | 100% | 0% | 0% | 1 | Mann et al., 2013; Tanaka et al., 2015 |
| Glaciecola | 2 | - | 50% | 50% | 0% | 0% | 2 | Xu et al., 2017 |
| Halomonas | 10 | - | 10% | 10% | 20% | 60% | 8 | Wong et al., 2000 |
| Idiomarina | 5 | - | 20% | 0% | 20% | 60% | 3 | ∧This study |
| Litoreibacter | 1 | - | 0% | 0% | 0% | 100% | 1 | |
| Maribacter | 5 | - | 0% | 80% | 0% | 20% | 5 | Nedashkovskaya et al., 2004; Zhan et al., 2017 |
| Marinobacter | 2 | - | 0% | 0% | 0% | 100% | 1 | |
| Paraglaciecola | 13 | - | 8% | 38% | 31% | 23% | 9 | Schultz-Johansen et al., 2016 |
| Photobacterium | 2 | - | 50% | 50% | 0% | 0% | 1 | Wong et al., 2000 |
| Polaribacter | 1 | - | 100% | 0% | 0% | 0% | 1 | Dong et al., 2012; Tanaka et al., 2015 |
| Pseudoalteromonas | 94 | - | 14% | 46% | 18% | 22% | 44 | Matsushima et al., 2010; Li et al., 2011 |
| Pseudomonas | 4 | - | 0% | 0% | 0% | 100% | 2 | Boyd et al., 1993 |
| Psychrobacter | 2 | - | 50% | 0% | 0% | 50% | 2 | Dong et al., 2012 |
| Psychromonas | 3 | - | 33% | 33% | 33% | 0% | 1 | Dong et al., 2012 |
| Rheinheimera | 2 | - | 0% | 0% | 100% | 0% | 1 | ∧This study |
| Rhodococcus | 1 | - | 0% | 0% | 0% | 100% | 1 | |
| Shewanella | 2 | - | 50% | 50% | 0% | 0% | 2 | Martin et al., 2015; Tanaka et al., 2015 |
| Sulfitobacter | 26 | - | 8% | 19% | 4% | 69% | 8 | Ivanova et al., 2004 |
| Tamlana | 1 | + | 0% | 0% | 100% | 0% | 1 | Tanaka et al., 2015 |
| Vibrio | 22 | + | 5% | 50% | 18% | 27% | 12 | Han et al., 2004; Martin et al., 2015 |
| Total | 255 | 13% | 36% | 17% | 34% | 138 | ||
∗OTUs represent isolates within each genus clustered at 99.8–100% similarity in 16S rRNA sequences. ∧We identified three bacterial genera that were not previously known to use alginate (Colwellia, Idiomarina, and Rheinheimera).