Gardnerella

Abstract

Gard.ner.el'la. N.L. fem. dim. n. Gardnerella named after H.L. Gardner. Actinobacteria / Actinobacteria / Bifidobacteriales / Bifidobacteriaceae / Gardnerella Pleomorphic rods ~0.5 µm in diameter and 1.5–2.5 µm in length. Filaments do not occur. Neither capsules nor endospores are formed. Gram‐stain‐negative to Gram‐stain‐variable. Nonmotile. Facultatively anaerobic. Fastidious in growth requirements. Catalase‐ and oxidase‐negative. Chemo‐organotrophic, with a fermentative type of metabolism. Acid, but no gas, is produced from a variety of carbohydrates, including maltose and starch . Acetic acid is the major product of fermentation. Hippurate is hydrolyzed. Human blood, but not sheep blood, is hemolyzed. Found in the human genital and urinary tracts. DNA G + C content (mol%) : 42–44 (Bd). Type species : Gardnerella vaginalis (Gardner and Dukes 1 9 5 5) Greenwood and Pickett 1 9 8 0, 176 VP ( Haemophilus vaginalis Gardner and Dukes 1 9 5 5, 963).