TABLE 1.

Substrate utilization profiles for S. aggregata, S. stellulata, and strains MIO, HI, BrT4, GA15, M4, and M8a

CharacteristicS. stellulataS. aggregataMIOHIBrT4GA15M4M8
Average cell size (μm) (length × width)1.9 × 0.81.8 × 0.72.1 × 0.72.4 × 0.82.0 × 0.81.6 × 0.82.4 × 0.8
Sodium requirement++++++++
CO Vmax (nmol [mg protein]−1 h−1)NT27035065310400510
Enzymatic activities:
    Nitrate respiration−*+
    Denitrification++*++++
    Indole productionNT
    Fermentation−*WWWW
Arginine dihydrolaseNT
UreaseNT++++++
Εsculine hydrolysisNT++++++
GelatinaseNT+
β-GalactosidaseNT++++++
Growth substrates:
    IsophthalateWW
    Terephthalate++++IW
    4-HydroxybenzoateIWI+
    PhthalateWW+
    MethanolI
    EthanolINTNT
    IsopropanolI
    AcetoneWI
    FormateW
    Propionate+++++++
    GlycolateWNT++NTW+W+
    Malonate++WW+++
    TartrateIWW+
    LactateW++++++W+
    GluconateW+++++
    GlycerolNT+W++++
    GalactoseW+++NT+++
    MannoseW+++++++
    Ribose++W+++++
    Lactose+W++W++W
    Sucrose++NT++NT++
    GlucuronateW+++++++
    GalacturonateNT+NT+NTNT+W
    Mannitol+++++++
    GlycineNTI
    Alanine++++++
    Valine++W+++++
    Glutamate++++++
    Aspartate+WW+R+W+W+
    SerineNTNTI+
    Phenylalanine+IWW
    BenzoateIINTNT
    MethylamineWII
    DimethylamineWI
    TrimethylamineWII
    Betaine+WW+++++
G+C content (%)59*59*58.360.956.857.957.457.8
  • a +, growth; −, no growth; W, weak growth; I, substrate was inhibitory; NT, substrate was not tested; *, data obtained from Uchino et al. (40); Vmax, maximum rate of metabolism.