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Table 2 Phenotypic characteristicsa of G. stearothermophilus strains

From: Insights into the Geobacillus stearothermophilus species based on phylogenomic principles

Characteristic

A1b,g

D1b,g

P3b,g

Dairyc

ATCC 7953d

ATCC 12980e

Species descriptionf

Motility

−

−

+

v

n/d

n/d

+

Acid from:

       

Adonitol

−

−

−

−

−

-*n/d

−

Amidong

−

+

−

v

+*

v*

n/d

Arabinose

w

−

w

w/−

−

−

v

Cellubioseg

+

+

+

+

v

-*

−

Fructose

+

+

+

+

+

+

+

Galactoseg

w

+

+

w/+

−

v

−

Gentiobioseh

−

−

−

v

-*

v

−

Glucose

n/d

n/d

n/d

+

+

+

+

Glycerol

n/d

n/d

n/d

-

+*

v

+

Glycogeng,h

−

−

−

v

+*

+

+

Inositol

−

−

−

−

−

−

−

Inuling

−

−

−

−

−

v

+

Lactoseg

+

+

+

+

−

-*

−

Maltose

n/d

n/d

n/d

+

+

+

+

Mannitol

−

−

−

−

Var

−

Var

Mannoseh

+

+

+

v

+*

+

+

Melezitoseh

−

+

−

v

+*

+

+

Melibiose

+

+

+

v

+*

+

+

MethylD-glucosideg, h

−

−

−

v

n/d

+

+

Raffinose, h

n/d

n/d

n/d

v

v

+

+

Rhamnose

−

−

−

−

−

−

−

Ribose

−

−

−

−

-*

−

−

Salicing, h

+

+

+

v

-*

v

−

Sorbitol

−

−

−

−

−

−

−

Sucrose

+

+

+

+

+

+

+

Trehaloseh

+

−

+

v

+*

+

+

D-Turanoseh

−

−

−

v

+*

+

v

Xylose

−

−

−

−

−

-*

v

Utilization of:

       

Citrate

−

−

−

−

-

n/d

−

Formate

   

n/d

  

−

Lactate

   

n/d

  

−

Hydrolysis of

       

Casein

−

−

−

-

v

n/d

v

Esculin

+

+

+

+

v

n/d

v

Gelating

−

−

−

−

+

n/d

+

Starchg

−

−

−

 

+

n/d

+

Nitrate reduction

+

+

+

+

+

n/d

v

Phenylalanine deamination

−

−

−

−

n/d

n/d

n/d

L-Pyroglutamic acidh

−

+

−

v

n/d

n/d

n/d

p-Nitrophenyl-β-D-glucosideg

+

−

+

v

n/d

n/d

n/d

  1. aAbbreviations are as follows: v, variable; w, weak reaction; n/d, not described
  2. bData from this present study and Burgess et al. [54]
  3. cData from Flint et al. [10] and Burgess et al. [54]
  4. dData from this present study (marked as *), Baldock [95], Humbert et al. [96] and Jung et al. [97]
  5. eData from this present study (marked as *), Walker and Wolf [98], Logan and Berkeley [99] and Flint et al. [10]
  6. fAs described by Logan et al. [70]
  7. gPhenotypic characteristic that is variable between the dairy strains
  8. hPhenotypic characteristic that is different between the dairy strains and that described for the G. stearothermophilus species