In the test of acid tolerance,the aciduric ability of strain PR389 under low acidic(pH3.8) was restrained by antibiotic chloramphenicol. It was speculated that special proteins in the cells of PR389 could be induced and synthesized in acidic environment.

• 在耐酸性试验中；PR389在加氯霉素的强酸性(pH3.；8)YMA培养液中表现出来的耐酸性被氯霉素抑制；推测胞内特异蛋白质的诱导合成是PR389具有耐酸性的原因。