SDS-PAGE analysis of POX isoforms confirmed these results and
revealed that the POX patterns in BSTN and JHL cultivars were
similar. These patterns present the expression of a relevant number
of isoenzymes ranging from 0.052 to 0.812 Rm value (Fig. 3). In
asymptomatic Foa-infected or JA-treated plants, POX isoenzymes
with Rm values ranging from 0.416 to 0.562 accumulated signifi-
cantly. In addition, in the same samples the POX pattern showed
a low induction of three other isoenzymes with Rm value 0.125,
0.145 and 0.208 as compared to untreated samples (Fig. 3). In plants
showing disease symptoms, activity stain of POX isoenzymes
declined until a complete loss of POX activity in plants softening
roots