Table 1.

Analysis of the O-antigen constituent rhamnose of Xanthomonas campestris pv. campestris B100 wild type and three mutant strains

Strain	Rhamnose (μg)	Percentage of rhamnose in the total LPS (%)	Rate of Rhamnose as compared to Xcc B100
Xcc B100	80.6	16	1
Xcc H21012 (wxcB)	45.5	9	0.56
Xcc H28110 (wxcK)	255.8	51.5	3.17
Xcc H20110 (wxcN)	403.6	80.5	5.01

Wild type data were compared to the wxcB mutant H21012, wxcK mutant H28110 and wxcN mutant H20110. Results were obtained by gas chromatography following hydrolysis and reduction of 500 μg LPS each. The depicted amounts are the mean of two replicates. For the wxcB mutant H21012 only one measurement could be used