Johnsonella

John.son.el'la. N.L. fem. n. Johnsonella in honor of John L. Johnson, a microbiologist from the United States. Firmicutes / “Clostridia” / Clostridiales / “Lachnospiraceae” / Johnsonella Obligately anaerobic , catalase‐negative , Gram‐stain‐negative , non‐spore‐forming rods . Nonmotile . Nonfermentative . In peptone‐yeast extract‐glucose broth a moderate amount of acetate and isovalerate, and traces of lactate, succinate, isobutyrate and butyrate are produced. Major cellular fatty acids when grown in peptone‐yeast extract‐glucose broth include an unidentified compound with an equivalent chain‐length of 9 . 740 , C 14 : 0 and C 16: 0 fatty acids. Johnsonella is associated with gingivitis and periodontitis in human gingival crevice and periodontal pockets. DNA G + C content ( mol %): 32. Type species : Johnsonella ignava Moore and Moore 1994, 190 VP .