Nesterenkonia natronophila
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.
  1. 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, H
2S 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
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