Differentiation of Xanthomonas spp. Causing Bacterial Spot in Bulgaria Based on Biolog System

Table 1

Utilization of cis-aconitic acid and amylase activity by the Bulgarian strains of genus Xanthomonas isolated from pepper, tomato, and weeds.

Substrates	X. euvesicatoria		X. vesicatoria		X. gardneri
	+ (positive), %	− (negative), %	+ (positive), %	− (negative), %	+ (positive), %	− (negative), %
Cis-aconitic acid		2	20 + 36*	44	0	100
Amylase	56	44	95		13	87

*Strains, % with positive + % with weak positive reaction.
**The 5% strains with negative reaction are all pepper isolates.