Quinella

Abstract

Quin.el'la. N.L. fem. n. Quinella named for the pioneering ruminologist, J.I. Quin, who described the organism in some detail (Quin, 1943). Firmicutes / “Clostridia” / Clostridiales / Veillonellaceae / Quinella Cells are Gram‐stain‐negative and oval shaped . Size is 3–4 × 5–8 µm in size but can be considerably smaller in the rumen if crowding occurs. Tumbling motility with linear tufts of flagella on one side of the cells. Endospores are not formed . Heterotrophic and mesophilic . Reproduces by binary fission, and it usually occurs as singles and pairs. A small number of carbohydrates are fermented mainly to lactate, acetate, propionate, and CO 2 . Contains a glycogen‐like reserve material. DNA G + C content ( mol %): unknown. Type species : Quinella ovalis Krumholz, Bryant, Brulla, Vicini, Clark and Bryant 1993, 295 VP .