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Swedish University of Agricultural Sciences

Veterinary bacteriology: information about important bacteria
Veterinary bacteriology


Species/Subspecies: Glaesserella parasuis
Etymology: Genus name: named after K. Glässer who first described the disease in pigs.
Species epithet: (Haemophilus) suis-liknande.
Significance:  [Important]   
Alternative Species Name(s):Haemophilus parasuis
Taxonomy:
Phylum
Proteobacteria
Class
Gammaproteobacteria
Order
Pasteurellales
Family
Pasteurellaceae 
Genus
Glaesserella
Type Strain: ATCC 19417 = CCUG 3712 = NCTC 4557
Macromorphology (smell):
Micromorphology: Small non-motile rods
Gram +/Gram -:G-
Metabolism: Facultatively anaerobic
Catalase/Oxidase:+/(+)
Other Enzymes: Esculinase -, tryptophanase -, urease -.
Biochemical Tests: Hydrogen sulphide (H2S) V.
Fermentation of carbohydrates:
D-glucoselactosemaltoseL-rhamnosesucrose
?v+--
L-arabinosecellobioseD-mannitolsalicintrehalose
-----
glycerolinulinraffinoseD-sorbitolstarch
-+-??
Other carbohydrates: Adonitol -, dulcitol -, D-galactose +, inositol V, melezitose -, melibiose -, sorbose -, xylitol -.
Spec. Char.:
Disease:Glasser's disease.
Hosts: Pig
Clinical Picture:
Genome Sequence:
Acc-noStrainSize (bp)Genome
NC_011852 SH0165 2 269 156  1c + 0 

16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
M75065 (T) 1477 

Taxonomy/phylogeny:
 
About 2 species have been described within genus Glaesserella, but the relationship between members within the closely related genera Actinobacillus, Glaesserella, Haemophilus, Mannheimia and Pasteurella is very uncertain since only few of these genera forms monophyletic clusters.

Note that the name of this bacterium is still Haemophilus parasuis in the phylogenetic tree.

Comment:The V-factor is required for growth, but not the X-factor.
Reference(s): No. 150
Updated:2021-09-16

News

New names of taxa within the classification category phylum

During October 2021, an article was published by A. Oren och G.M. Garrity, in which new names are proposed for a number of taxa within the classification category phylum. This has resulted in many discussions in social media about whether it was really necessary to make these changes, which have created confusion among microbiologists and other professionals who come into contact with bacteriology.

Published 2022-09-28. Read more...

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