Table 2. Potential sources of pyruvate for Ca. P. ubique when grown in AMS1 with 25 μℳ glycine and 10 μℳ methionine.

Potential pyruvate source	Maximum densitya	Growth rateb
Glucose	12.1±3.83	0.27±0.02
Pyruvate (positive control)	8.91±0.74	0.33±0.01
Oxaloacetate	6.92±0.04	0.33±0.04
Taurine	0.46±0.14	0.21±0.02
Lactate	0.11±0.09	0.18±0.04
Ribose	0.05±0.01	0.23±0.01
Malate	0.03±0.01	0.14±0.04
Citrate	0.03±0.00	0.12±0.01
Acetate	0.02±0.01	0.10±0.05
No pyruvate (negative control)	0.02±0.01	0.13±0.02
Succinate	0.02±0.00	0.11±0.01
Alanine	0.01±0.00	0.01±0.01
Glycine	0.01±0.00	0.06±0.01

^aPresented as mean±s.d. × 10⁷ cells ml⁻¹, n=3.

^bPresented as mean±s.d., cells day⁻¹, n=3.