Table 1. Protein content of healthy and ZC affected plants.

Sample	Protein* (mg/g)	SD**
Healthy-1	1.04	0.072
Healthy-2	1.24	0.072
Healthy-3	0.95	0.082
Healthy-4	1.21	0.273
Healthy-5	0.46	0.090
Healthy-6	1.39	0.170
Healthy-7	1.43	0.020
ZC-1	2.88	0.112
ZC-2	3.06	0.055
ZC-3	3.37	0.097
ZC-4	6.42	0.116
ZC-5	4.38	0.121
ZC-6	4.03	0.047

^*Bradford assays were used to determine the protein concentration of healthy and ZC affected stem tissue. The plant samples were measured in three replicates.

^**A statistical analysis one-way ANOVA using SPSS 14.0 and Tukey mean comparison with P = 0.01 showed that the ZC diseased plants have a significant increase of protein content per gram of tissue compared to healthy potato plants. The potato plants were sampled in the field and were of different varieties (FL1867, Norkotah or Norgold).