| Halopseudomonas aestusnigri |
Positive results for catalase and oxidase.
Can assimilate (API 20 NE): capric acid and adipic acid.
Can utilize (Biolog GN2): methyl pyruvate, Tween 40, Tween 80, pyruvic acid methyl ester, D,L-lactic acid, sebacic acid and L-alanine.
Negative results for arginine dihydrolase, aesculin hydrolysis, gelatin hydrolysis, beta-galactosidase, indole production, nitrate to
nitrite reduction, denitrification, urease and glucose fermentation.
No assimilation of: malic acid, trisodium citrate, D-glucose, L-arabinose, D-mannose, D-mannitol, N-acetyl-glucosamine, D-maltose,
potassium gluconate and phenylacetic acid.
No utilization of: i-erythritol, m-inositol, D-sorbitol, glycerol, L-histidine, malonic acid, D-arabitol, D-fructose, sucrose, trehalose,
L-leucine, L-pyroglutamic acid, D- and L-serine, alpha-cyclodextrin, glycogen, L-arabinose, alpha-D-glucose, lactulose, cis-aconitic
acid, citric acid, D-galacturonic acid, D-glucuronic acid, alpha-hydroxy butyric acid, itaconic acid, alpha-keto butyric acid, alpha-keto
glutaric acid, alpha-keto valeric acid, quinic acid and thymidine.
Variable utilization of: dextrin, mono-methyl-succinate, acetic acid, beta-hydroxy butyric acid, propionic acid, succinic acid, bromo
succinic acid, succinamic acid (weak), L-alaninamide (weak), D-alanine (weak), L-asparagine, L-proline, L-glutamic acid (weak),
gamma-amino butyric acid and glucose-6-phosphate.
Can assimilate (API 20 NE): capric acid and adipic acid.
Can utilize (Biolog GN2): methyl pyruvate, Tween 40, Tween 80, pyruvic acid methyl ester, D,L-lactic acid, sebacic acid and L-alanine.
Negative results for arginine dihydrolase, aesculin hydrolysis, gelatin hydrolysis, beta-galactosidase, indole production, nitrate to
nitrite reduction, denitrification, urease and glucose fermentation.
No assimilation of: malic acid, trisodium citrate, D-glucose, L-arabinose, D-mannose, D-mannitol, N-acetyl-glucosamine, D-maltose,
potassium gluconate and phenylacetic acid.
No utilization of: i-erythritol, m-inositol, D-sorbitol, glycerol, L-histidine, malonic acid, D-arabitol, D-fructose, sucrose, trehalose,
L-leucine, L-pyroglutamic acid, D- and L-serine, alpha-cyclodextrin, glycogen, L-arabinose, alpha-D-glucose, lactulose, cis-aconitic
acid, citric acid, D-galacturonic acid, D-glucuronic acid, alpha-hydroxy butyric acid, itaconic acid, alpha-keto butyric acid, alpha-keto
glutaric acid, alpha-keto valeric acid, quinic acid and thymidine.
Variable utilization of: dextrin, mono-methyl-succinate, acetic acid, beta-hydroxy butyric acid, propionic acid, succinic acid, bromo
succinic acid, succinamic acid (weak), L-alaninamide (weak), D-alanine (weak), L-asparagine, L-proline, L-glutamic acid (weak),
gamma-amino butyric acid and glucose-6-phosphate.
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Pseudomonadota (Proteobacteria), Class Gammaproteobacteria, Order Pseudomonadales, Family Pseudomonadaceae,
Genus Halopseudomonas, Halopseudomonas aestusnigri (Sanchez et al. 2014) Rudra and Gupta 2021.
Synonyms: Pseudomonas aestusnigri Sanchez et al. 2014, Neopseudomonas aestusnigri (Sanchez et al. 2014) Saati-Santamaria et al.
2021.
Genus Halopseudomonas, Halopseudomonas aestusnigri (Sanchez et al. 2014) Rudra and Gupta 2021.
Synonyms: Pseudomonas aestusnigri Sanchez et al. 2014, Neopseudomonas aestusnigri (Sanchez et al. 2014) Saati-Santamaria et al.
2021.
Gram-negative rods, 0.6-0.7 x 1.6-2.0 μm. Motile by means of one polar flagellum.
The colonies are round, convex, colour beige, bright and with entire margins (1-3
mm diameter) on Luria-Bertani agar after incubation for 48 h at 30 ºC.
Non-pigmented. Growth occurs at 18-42 ºC (optimal temperature is 25-30 ºC), at a
pH of 6-10 and with 2-10% (w/v) NaCl. Strictly aerobic.
mm diameter) on Luria-Bertani agar after incubation for 48 h at 30 ºC.
Non-pigmented. Growth occurs at 18-42 ºC (optimal temperature is 25-30 ºC), at a
pH of 6-10 and with 2-10% (w/v) NaCl. Strictly aerobic.
Isolated from crude oil-contaminated intertidal sand samples.
Unknown.
- Sanchez D, Mulet M, Rodriguez AC, David Z, Lalucat J, Garcia-Valdes E. Pseudomonas aestusnigri sp. nov., isolated from crude oil-
contaminated intertidal sand samples after the Prestige oil spill. Syst Appl Microbiol 2014; 37:89-94. - Rudra B, Gupta RS. Phylogenomic and comparative genomic analyses of species of the family Pseudomonadaceae: Proposals
for the genera Halopseudomonas gen. nov. and Atopomonas gen. nov., merger of the genus Oblitimonas with the genus
Thiopseudomonas, and transfer of some misclassified species of the genus Pseudomonas into other genera. Int J Syst Evol
Microbiol 2021; 71:5011.
(c) Costin Stoica
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