Table 1. Catalase activity and H₂O₂ production by M. iowae serovar K, M. gallisepticum R_low, and M. gallisepticum 55 and 56 series transformants containing M. iowae katE.

Strain	Catalase activity	H2O2 production (mg L−1)
		100 µM glucose	100 µM glycerol
M. iowae serovar K	+	0±0*	0±0*
M. gallisepticum Rlow	−	1.6±0.1	3.8±0.3
55A	+	0±0*	0±0*
55B	+	0±0*	0±0*
55C	+	0±0*	0.1±0.1*
56A	+	0±0*	0±0*
56C	+	0.3±0.3*	0.6±0.4*

*P<0.05 compared to M. gallisepticum R_low H₂O₂ production with respective carbohydrate.