Results demonstrated that treatments of soybean with PSP1, BION or AsES exhibited significant protection against STS development as compared to inoculated mock-treated control plants, and that no statistically significant difference was observed among severity values of the three treatments (Figure 3A), indicating that PSP1 treatment conferred a similar STS disease control as the purified protein AsES and the commercial product BION. The gene discussed is PSPC1; the disease is telomere syndrome.