| Pseudalkalibacillus hwajinpoensis |
Taxonomy
Morphology
Cultural characteristics
Biochemical characters
Ecology
Pathogenicity
References
Phylum Bacillota (Firmicutes), Class Bacilli, Order Caryophanales, Family Bacillaceae, Genus Pseudalkalibacillus,
Pseudalkalibacillus hwajinpoensis (Yoon et al. 2004) Joshi et al. 2022.
Synonyms: Guptibacillus hwajinpoensis (Yoon et al. 2004) Bello et al. 2025, Alkalihalobacillus hwajinpoensis (Yoon et al. 2004) Patel
and Gupta 2020, Bacillus hwajinpoensis Yoon et al. 2004.
Description is based on a single isolate.
Pseudalkalibacillus hwajinpoensis (Yoon et al. 2004) Joshi et al. 2022.
Synonyms: Guptibacillus hwajinpoensis (Yoon et al. 2004) Bello et al. 2025, Alkalihalobacillus hwajinpoensis (Yoon et al. 2004) Patel
and Gupta 2020, Bacillus hwajinpoensis Yoon et al. 2004.
Description is based on a single isolate.
Gram-positive (Gram-variable in old cultures), nonmotile rods, 1.0-1.3 x 2.5-4.0 µm.
Produce centrally or terminally, ellipsoidal endospores in swollen sporangia.
Produce centrally or terminally, ellipsoidal endospores in swollen sporangia.
Colonies are circular to slightly irregular, light yellow, smooth , 2-4 mm in diameter
after 3 days at 30 ºC on marine agar. Growth occurs at pH 5 to 7 (optimum pH 6-7)
and at 10-40 ºC (optimum temperature 30 ºC). Grow in nutrient broth with 2-19% NaCl
added (optimum 2-5% NaCl). Allantoin and urate are not required for growth. NaCl is
required for growth. Aerobic.
after 3 days at 30 ºC on marine agar. Growth occurs at pH 5 to 7 (optimum pH 6-7)
and at 10-40 ºC (optimum temperature 30 ºC). Grow in nutrient broth with 2-19% NaCl
added (optimum 2-5% NaCl). Allantoin and urate are not required for growth. NaCl is
required for growth. Aerobic.
Isolated from sea water of the East Sea in Korea.
Not determined.
- N.A. Logan and P. De Vos, 2009. Genus I. Bacillus Cohn 1872. In: (Eds.) P.D. Vos, G. Garrity, D. Jones, N.R. Krieg, W. Ludwig, F.A.
Rainey, K.-H. Schleifer, W.B. Whitman. Bergey’s Manual of Systematic Bacteriology, Volume 3: The Firmicutes, Springer, 21-127. - Yoon J.-H., Kim I.-G., Kang K. H., Oh T.-K. and Park Y.-H., 2004. Bacillus hwajinpoensis sp. nov. and an unnamed Bacillus
genomospecies, novel members of Bacillus rRNA group 6 isolated from sea water of the East Sea and the Yellow Sea in Korea.
IJSEM 54, 803-808. - Joshi A, Thite S, Karodi P, Joseph N, Lodha T. Alkalihalobacterium elongatum gen. nov. sp. nov.: An Antibiotic-Producing
Bacterium Isolated From Lonar Lake and Reclassification of the Genus Alkalihalobacillus Into Seven Novel Genera. Front
Microbiol 2021; 12:722369. - Liu R, Huang Z, Dong C, Shao Z. Lottiidibacillus patelloidae gen. nov., sp. nov., isolated from the intestinal tract of a marine limpet
and reclassification of Bacillus taeanensis as Maribacillus taeanensis gen. nov., comb. nov. Antonie Van Leeuwenhoek 2019; 112:
797-807.
Positive results for caseinase, catalase, esculin hydrolysis, indole production, nitrate reduction, N-acetyl D-glucosamine, starch
hydrolysis. Tween 20, 40, 60 and 80 hydrolysis, acid production from: cellobiose, fructose, galactose, D-glucose, D-mannitol,
D-mannose, maltose, melibiose, raffinose, ribose, sucrose and trehalose.
Negative results for citrate utilization, oxidase, degradation of tyrosine, urease, acid production from: L-arabinose, adonitol,
meso-inositol, lactose, melezitose, rhamnose, sorbitol and D-xylose.
Variable results for gelatinase activity.
hydrolysis. Tween 20, 40, 60 and 80 hydrolysis, acid production from: cellobiose, fructose, galactose, D-glucose, D-mannitol,
D-mannose, maltose, melibiose, raffinose, ribose, sucrose and trehalose.
Negative results for citrate utilization, oxidase, degradation of tyrosine, urease, acid production from: L-arabinose, adonitol,
meso-inositol, lactose, melezitose, rhamnose, sorbitol and D-xylose.
Variable results for gelatinase activity.
(c) Costin Stoica
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