TABLE 2.
Characteristics of spherical cells formed with different seawater concentrations
| Strain | Mediuma | Heat tolerance (°C)b | Desiccation tolerancec |
|---|---|---|---|
| HW-1 | Liquid DVY or 10% HVY | 45 | <1 mo |
| Liquid 20%-100% HVY | 80-85 | >5 yr | |
| DVY and 10% HVY agar | 60-65 | >5 yr | |
| 20%-100% HVY agar | 80-85 | >5 yr | |
| SMP-2 | Liquid 10% HVY | 45 | <1 mo |
| Liquid 20%-100% HVY | 55-60 | >3 mo | |
| 10% HVY agar | 45 | <1 mo | |
| 20%-100% HVY agar | 55-60 | >3 mo |
a
The seawater concentrations tested were 10% to 100% at intervals of 10%.
b
The spherical cells were heat treated at temperatures from 45°C to 90°C at intervals of 5°C.
c
After storage for a period of time, the cells were transferred at intervals onto 50% HVY agar to determine viability. The intervals were 1 month for the first 6 months and then 6 months. SMP-2 has been assayed for desiccation tolerance for only 3 months since we got it.