Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Pseudomonadota (Proteobacteria), Class Gammaproteobacteria, Order Enterobacterales, Family Erwiniaceae, Genus Mixta,
Mixta theicola (Tanaka et al. 2015) Palmer et al. 2018.
Basonym: Pantoea theicola Tanaka et al. 2015.
Gram-negative, short rods, 0.8-1.2 x 1.5-3.0 μm, occurring singly or in pairs. Motile.
Colonies are circular, non-pigmented and convex, 0.6-1.0 mm in diameter after 24 h
of aerobic incubation at 30 ºC on tripticase soy agar. Growth occurs at 10-40 ºC
(optimally at 37 ºC), but not at 5 or 45 ºC. Growth occurs at pH 5-9 (optimally at pH 7).
Facultatively anaerobic.
Isolated from black tea.
Undetermined.
- Kato Tanaka Y, Horie N, Mochida K, Yoshida Y, Okugawa E, Nanjo F. Pantoea theicola sp. nov., isolated from black tea. Int J Syst
Evol Microbiol 2015; 65:3313-3319.
- Palmer M, Steenkamp ET, Coetzee MPA, Avontuur JR, Chan WY, van Zyl E, Blom J, Venter SN. Mixta gen. nov., a new genus in the
Erwiniaceae. Int J Syst Evol Microbiol 2018; 68:1396-1407.
Positive results for catalase, citrate utilization, beta-galactosidase, nitrate reduction to nitrite (not to N2), acid production from
amygdalin, arbutin, L-arabinose, cellobiose, aesculin, D-fructose, D-fucose, glycerol, D-galactose, D-glucose, gentiobiose, inositol,
melibiose, D-mannitol, D-mannose, maltose, N-acetylglucosamine, L-rhamnose, D-ribose, salicin, trehalose and D-xylose.
Negative results for arginine dihydrolase, beta-glucuronidase, gelatinase, H2S producton, indole production, lysine decarboxylase,
ornithine decarboxylase, tryptophan deaminase, oxidase, urease, Voges-Proskauer reaction acid production from D-arabitol, dulcitol,
gluconate, 2- and 5-ketogluconate, lactose, raffinose, D-sorbitol and sucrose.
(c) Costin Stoica