Figure 1.

(A) Tricine gel electrophoresis of proteins extracted from potatoes. Total proteins were extracted from potato tubers using extraction buffer (10 mM Tris-HCl, 1.5 M LiCl, pH 7.4): lane 1, molecular size markers (26.6, triosephosphate isomerase; 17, myoglobin; 14.2, α-lactalbumin; 6.5, aprotinin; 3.5, insulin chain B; 1, bradykinin); lane 2, proteins extracted from potato (20 μg); (B) Antibacterial activities of proteins extracted from potato against the bacterial strain Clavibacter michiganensis subsp. michiganensis: 1, untreated cells; 2, cell treated with 100 μg of protein (<10 K fraction); (C) Antifungal activity against Rhizoctonia solani: 1, untreated cells; 2, cells treated with 200 μg of protein (<10 K fraction). Measurements were made in triplicate.