The spectrum of lytic activity by phage HU1 against Pseudomonas strains. Plaque formation by phage HU1 is shown against the P. lactis YT4 strain and the reference strains of P. lactis (DSM 29167T), P. paralactis (DSM 29164T), P. fluorescens (NBRC 14160T), P. putida (NBRC 14164T), P. syringae (NBRC 3310), and Pseudomonas alcaligenes (NBRC 14159T).