HaliscomenobacterDid we forget anything? Let us know

Genus nameHaliscomenobacter
Alternative namesH. hydrossis (also a morphotype)
NCBI taxonomy ID2349

Taxonomy (MiDAS 2.0)


16S gene copy number2

 In situOther
Hydrophobic cell surface6

Phase contrast micrograph Haliscomenobacter-like filaments protruding from an activated sludge floc. Scale bar represents 10 mm. - Source:4

Aerobic heterotroph

POSNEGVariableNot assessed


Haliscomenobacter are strictly aerobic heterotrophs 5. Cells grow as 'needle-like' filaments, that extend from activated sludge flocs 5. They are commonly observed and can be implicated in bulking 1 5 6. In axenic culture glucose, glucosamine, lactose, sucrose and starch were found to be excellent carbon and energy sources 5. Starch, gelatin 5 and various amino acids are hydrolysed 7 8. Poly-3-hydroxybutyrate is not produced 5. In situ studies indicate active uptake of propionate, glucose and N-acetylglucosamine along with some exoenzymic activity. Substrates were only assimilated with oxygen present 6.

Show full entry

FISH probes

HAL-844 9


 In situOther
Aerobic Heterotroph65
Nitrite Reduction6
Sulfate Reduction
Short-chain Fatty Acids657
Proteins/Amino Acids657810

Abundance Information

 10 % percentileMedian90 % percentile
Activated Sludge00.10.3

Predominant InActivated sludge


[1] Seviour R.J. & Nielsen P.H. (2010) Microbial Ecology of Activated Sludge. IWA Publishing. London, UK. - Seviour Nielsen -

[2] - NCBI genome database, NCBI id 2349 -

[3] Daligault, Lapidus, Zeytun, Nolan, Lucas, Del Rio, et al. (2011): Complete genome sequence of Haliscomenobacter hydrossis type strain (O). Stand Genomic Sci 4 (3): 352-60. doi:10.4056/sigs.1964579

[4] Mulder EG, Deinema MH (2006) The genus Haliscomenobacter. In: Dworkin M, Falkow S, Rosenberg E, Schleifer K-H, Stackebrandt E (eds) The prokaryotes. Springer, Singapore, pp 602–604 - Mulder And Deinema 2006 -

[5] van Veen, van der Kooij, Geuze, van der Vlies (1973): Investigations on the sheathed bacterium Haliscomenobacter hydrossis gen.n., sp.n., isolated from activated sludge. Antonie Van Leeuwenhoek 39 (2): 207-16.

[6] Kragelund, Levantesi, Borger, Thelen, Eikelboom, Tandoi, et al. (2008): Identity, abundance and ecophysiology of filamentous bacteria belonging to the Bacteroidetes present in activated sludge plants. Microbiology (Reading, Engl.) 154 (Pt 3): 886-94. doi:10.1099/mic.0.2007/011684-0

[7] Kampfer, P. (1995) Physiological and chemotaxonomic characterisation of filamentous bacteria belonging to the genus Haliscomenobacter. System Appl. Microbiol. 18(3): 363-367. - Kampfer 1995 -

[8] Krul, J.M. (1977) Experiments with Haliscomenobacter hydrossis in continuous culture without and with Zoogloea ramigera. Water Research. 11: 197-204. - Krul 1977 -

[9] Schauer, Hahn (2005): Diversity and phylogenetic affiliations of morphologically conspicuous large filamentous bacteria occurring in the pelagic zones of a broad spectrum of freshwater habitats. Appl. Environ. Microbiol. 71 (4): 1931-40. doi:10.1128/AEM.71.4.1931-1940.2005

[10] Mulder, E.G., and Deinema, M.H. (2006) The Genus Haliscomenobacter. In: M. Dworkin., S. Falkow., E. Rosenberg., K.H. Schleifer., E. Stackebrandt (eds.). The Prokaryotes, vol 7: Proteobacteria: Delta, Epsilon subclass, pp 602-604. Springer, New York. - Mulder And Deinemer 2006 -

Hide details
comments powered by Disqus

Contact us at mail@midasfieldguide.org