A novel phenazine-l-carboxamide-derived 18-1 (PCND 18-1) was evaluated in terms of its potential for the development and enrichment of new biofungicides for the control of rice sheath blight caused by Rhizoctonia solani. PCND 18-1 exhibited fungicidal activity against R. solani, showing an inhibition rate of 87.64%, with a 50% effective concentration (EC50) 4.25 mu g/mL, regression equation of Y = 0.7105x + 3.8428; and correlation coefficient of 0.9817, which are indicative of its potential as a natural biofungicide. PCND 18-1 also attenuated the pathogenicity of R. solani, which was concentra...
