Yes, Serpentina (Rauvolfia serpentina) plant has been found to have antimicrobial properties. The plant is traditionally used in Ayurvedic and Chinese medicine to treat various ailments including bacterial infections. Studies have shown that the plant extracts contain bioactive compounds that have antimicrobial activity against various microorganisms including bacteria and fungi. Some of these compounds include reserpine, ajmaline, serpentinine, and yohimbine. However, further research is needed to determine the specific mechanisms of action and potential clinical applications for these antimicrobial properties.