Nesterenkonia natronophila
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Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Actinobacteria, Class Actinobacteria, Order Micrococcales, Family Micrococcaceae, Genus Nesterenkonia, Nesterenkonia
natronophila Machin et al. 2019.
Species description is based on a single isolate.
Gram-positive cocci, 0.8-1.2 µm in diameter, occurring in pairs or irregular clusters.
Non-motile. Non-spore-forming.
Colonies on TSA with 5% NaCl (pH 10) after incubation at 30 ºC for 3 days are deep
orange, smooth, convex and circular with entire margins. Growth occurs at 10-38 ºC
(optimum 30 ºC), pH 7.5-12 (optimum, pH 10) and with 1-15% (w/v) NaCl (optimum
5% NaCl). Strictly aerobic. Not beta-haemolytic.
Isolated from a sediment sample at Lake Magadi, a soda lake in the Arusha region, Tanzania.
Undetermined.
- Machin EV, Asem MD, Salam N, Iriarte A, Langleib M, Li WJ, Menes RJ. Nesterenkonia natronophila sp. nov., an alkaliphilic
actinobacterium isolated from a soda lake, and emended description of the genus Nesterenkonia. Int J Syst Evol Microbiol 2019;
69:1960-1966.
Positive results for catalase, alpha-glucosidase (weak reaction), naphtholAS-BI-phosphohydrolase (weak reaction) and leucine
arylamidase.
Can utilize acetate, D-fructose, fumarate, D-galactose, glutarate, lactate, malate, maltose, propionate, succinate, trehalose
alpha-ketoglutarate, L-alanine, L-asparagine, L-glutamine L-isoleucine, L-ornithine, L-phenylalanine and L-valine. Weak growth
occurs on L-arabinose, L-cysteine, glycine, glycogen, L-lysine L-rhamnose and D-xylose.
Can assimilate in API 20 NE: D-glucose, maltose, capric acid and phenylacetic acid.
In API 50CH, utilizes L-arabitol, cellobiose, D-glucose, D-ribose, maltose, sucrose, trehalose and D-turanose.
Negative results for acid and alkaline phosphatase, alpha-chymotrypsin, casein hydrolysis, cystine arylamidase, citrate utilization,
DN-ase, esterase (C4), esterase lipase (C8), esculin hydrolysis, beta-fucosidase, alpha- and beta-galactosidase,
N-acetyl-beta-glucosaminidase, beta-glucosidase, beta-glucuronidase, gelatin hydrolysis, H2S production, indole production,
lecithinase, , lipase (C14), alpha-mannosidase, nitrate reduction, oxidase, phenylalanine deaminase, Voges-Proskauer reaction,
starch hydrolysis, Tween 20, 60, and 80 hydrolysis, trypsin, tyrosine hydrolysis, urease, and valine arylamidase.
No utilization of D-arabitol, butyrate, citrate, formate, glycerol, D-mannitol, raffinose, L-arginine, L-aspartate, L-serine and L-tryptophan.
No assimilation of L-arabinose, D-mannitol, D-mannose, N-acetyl glucosamine, gluconate, adipic acid, malic acid and trisodium
citrate.
In API 50CH, no utilization of N-acetylglucosamine, D-adonitol, aesculin, amygdaline, D- and L-arabinose, D-arabitol, arbutin, dulcitol,
erythritol, D-fructose, D- and L-fucose, D-galactose, gentiobiose, gluconate, glycerol, glycogen, inositol, inulin, 2- and 5-ketogluconate,
lactose, D-lyxose, methyl alpha-D-glucoside, methyl alpha-D-mannoside, methyl beta-D-xyloside, D-mannitol, D-mannose,
melezitose, melibiose, raffinose, L-rhamnose, salicin, D-sorbitol, L-sorbose, starch, D-tagatose, xylitol, D- and L-xylose.
(c) Costin Stoica