Antagonistic interactions among bacteria inhabiting pineapple

► We determined the antagonism of B. gladioli on a pink disease causative agent. ► We detected inhibition of T. ptyseos by B. gladioli in in vitro experiments. ► We detected inhibition of T. ptyseos by B. gladioli in in planta experiments. ► We detected pigmentation decline by cultivating T. ptyseos with B. gladioli.