Antibacterial activity of Anadendrum microstachyum and Selaginella plana against two pathogenic bacteria (Edwardsiella ictaluri and Streptococcus agalactiae) causing freshwater fish diseases

Abstract

Aquatic plants are potential to use as antibacterial to control pathogens that cause disease in fish. The antibacterial activity of extracts of Anadendrum microstachyum and Selaginella plana were tested against Edwardsiella ictaluri and Streptococcus agalactiae using disc diffusion Kirby-Bauer method. Plant extracts of A. microstachyum and S. plana at concentration 0.2 g could inhibit E. ictaluri and S. agalactiae; therefore A. microstachyum and S. plana are potential be developed as antibacterial compounds to substitute the use of antibiotic in fish farming and as candidates new drug to prevent and control of diseases in aquaculture.