Isolation and Application of Bacteriophages to Suminori Disease Control

概要

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Three types of bacteriophages that infected suminori pathogenic bacterium, <I>Gaetbulibacter</I> sp., were isolated from seawater and tideland mud of the Ariake Sea. These bacteriophages were classified into two groups according to their morphology and restriction analysis of their genomes. Their virulence against the pathogen was investigated as the length of their latent periods and burst sizes based on a one-step growth experiment. Suminori disease control was also attempted using one isolated bacteriophage selected by its virulence and the storage stability. The incidence of the disease was apparently repressed in phage-treated laver thalli of <I>Porphyra yezoensis</I> immediately after bacterial infection. Furthermore, phage treatment was effective even after 24 h of bacterial infection. The results obtained in this study suggest the possibility of using bacteriophages for suminori disease control in laver cultivation.
日本水産増殖学会の論文