Genus/species (aliases): Gluconacetobacter johannae
Gram Stain: Negative
- Cell: rods with rounded ends, approximately 1.5-1.9 micrometer and 0.5-0.6 micrometer; occur singly, in pairs or in short chains. Motile by means of peritrichous flagella.
- Colony: light brown to brown colonies.
- Liquid Growth:
Growth on: good growth on ethanol, galactose, xylose,; moderate growth on raffinose, maltose; faint growth on arabinose, butanol, glycerol, mannitol, melibiose, sorbitol; no growth: mannose
Found in nature associated with plant materials; tolerant of low pH and high concentrations of sugar found on grapes.
Role in wine:
Found in musts.
- pH: Yes
- Acids: Yes
- Ethanol: Yes
- Heat: Yes
Bergey’s manual of systematic bacteriology
Novel nitrogen-fixing acetic acid bacteria, Gluconacetobacter johannae sp. nov. and Gluconacetobacter azotocaptans sp. nov. associated with coffee plants= International Journal of Systematic and Evolutionary Microbiology (2001), 51, 1305–1314