Phylum Proteobacteria, Class Gammaproteobacteria, Order Enterobacterales, Family Morganellaceae, Genus Providencia,
Providencia huaxiensis Hu et al. 2019.
Species description is based on a single isolate.
Gram-negative rods. Non-motile, non-gas-producing, non-spore-forming.
Colonies on MacConkey and BHI agar after 24 h of incubation at 37 ºC are white or
yellow, translucent, circular, glossy, convex, glistening, with entire margins. Growth
occurs at 20-39 ºC (optimally at 35-37 ºC), but not at 4, 42 or 46 ºC. Growth occurs at
pH 5.0-10.0 (optimally at pH 6.0-7.0) and in the presence of 0-6% (w/v) NaCl in TSB.
Isolated from a human rectal swab taken at West China Hospital in Chengdu, China.
- Hu Y, Feng Y, Zhang X, Zong Z. Providencia huaxiensis sp. nov., recovered from a human rectal swab. Int J Syst Evol Microbiol
Description is based on API 20 E, and API 50 CH (bioMerieux) results.
Positive results for catalase, citrate utilization, gelatin hydrolysis, indole production, tryptophan, urease, Voges-Proskauer test,
acid production from adonitol, amygdalin, D- and L-arabitol, arbutin, esculin, fructose, galactose, gluconate, 2-ketogluconate, glucose,
inositol, mannitol, mannose, N-acetyl-glucosamine, ribose, and salicin.
Negative results for arginine dihydrolase, H2S production, lysine decarboxylase, ornithine decarboxylase, ONPG, oxidase
acid production from D- and L-arabinose, arginine, cellobiose, dulcitol, D- and L-fucose, gentiobiose, glycerol, glycogen,
5-ketogluconate, inulin, lactose, D-lyxose, maltose, melibiose, methyl D-glucoside, methyl D-mannoside, methyl D-xyloside, raffinose,
rhamnose, starch, sorbitol, sorbose, sucrose, D-tagatose, trehalose, turanose, xylitol, D- and L-xylose.
(c) Costin Stoica