TABLE 2.

Characterization of the ultramicrobacterial strains investigated

StrainOriginPigmentationCell vol (μm3)aGrowth rate (h−1)e16S rRNA genotypeAccession no.
MeanSD
MWH-Mo1Lake MondseeYellow0.0520.1520.0091 AJ507460
0.056 ± 0.002b
0.056 ± 0.001c
MWH-Mo2Lake MondseeYellow0.057NDf3 AJ507461
MWH-Mo3Lake MondseeYellow0.056d0.110.0034 AJ507462
MWH-Po1Pond 1Yellow0.058ND5 AJ507463
MWH-Wo1Lake WolfgangseeYellow0.0540.1640.0061 AJ507464
MWH-Bo1Lake ConstanceYellow0.061ND5 AJ507465
MWH-Ta1Lake TaihuYellow0.0510.1770.0011 AJ507466
MWH-Ta2Lake TaihuYellow0.0560.1830.0082 AJ507467
MWH-Ta3Lake TaihuRed0.0830.1510.0016 AJ507468
  • a Exponential phase of growth in 9-g liter−1 NSY medium at room temperature (ca. 22°C), unless indicated otherwise.

  • b Exponential phase of growth in 3-g liter−1 NSY medium at room temperature (ca. 20°C). Average ± standard deviation for three replicates.

  • c Exponential phase of growth in 9-mg liter−1 NSY medium at room temperature (ca. 20°C). Average ± standard deviation for three replicates.

  • d Exponential phase of growth in 3-g liter−1 NSY medium at room temperature (ca. 22°C). The strain cannot grow in 9-g liter−1 NSY medium.

  • e Growth rate in 3-g liter−1 NSY medium at 20°C. Triplicate preparations were used in this analysis.

  • f ND, not determined.