Orfamide A

Orfamide A, a lipopeptide biosurfactant isolated from P. protegens, exhibits multifaceted bioactivity. With an LC50 of 34.5 μg/ml, it significantly increases mortality in adult green peach aphids. Additionally, at a concentration of 50 μM, Orfamide A inhibits appressoria formation in M. oryzae isolates and decreases the prevalence of sporulating blast lesions in M. oryzae-infected plants. Furthermore, it demonstrates efficacy against T. b. brucei, with an IC50 value of 6 μM.

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