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Swedish University of Agricultural Sciences

Veterinary bacteriology: information about important bacteria
Veterinary bacteriology


Species/Subspecies: Mesomycoplasma flocculare
Category: In the normal flora
Etymology: Genus name: between other mycoplasmas (fungus shaped).
Species epithet: tuft of wool.
Significance:  [Of minor importance]   
Alternative Species Name(s):Mycoplasma flocculare
Taxonomy:
Phylum
Mycoplasmatota
Class
Mollicutes
Order
Mycoplasmoidales
Family
Metamycoplasmataceae 
Genus
Mesomycoplasma
Type Strain: Ms42 = ATCC 27399 = NCTC 10143.
Macromorphology (smell): Forms small atypical colonies, which lack a defined center. The colonies should be observed in a microscope.
Micromorphology: Coccoid cells.
Gram +/Gram -:G-, but is normally not gram stained because the cells will then be fragmented.
Metabolism: Facultatively anaerobic.
Catalase/Oxidase:
Spec. Char.:
Disease:
HostsDiseaseClinical picture
PigM. flocculare is an opportunistic pathogen, which may cause pneumonia in combination with other patogens (usually M. hyopneumoniae).
Genome Sequence:
Acc-noStrainSize (bp)Genome
CP007585 Ms42T 0 778 866 1c + 0 

16S rRNA Seq.:
Acc-noStrainNumber of NTOperon
L22210 Ms42T 1541 (354..1894) 

Taxonomy/phylogeny:
 
About 15 species have been described within the genus Mesomycoplasma. Mesomycoplasma flocculare is closely related to M. ovipneumoniae, M. hyopneumoniae as well as M. dispar.

Note that the letter M in the phylogenetic tree (Fig. 231:1) can mean Mycoplasma, Mesomycoplasma, Metamycoplasma, Mycoplasmoides or Mycoplasmopsis.

Comment:Based on whole genome sequencing, the taxonomy of mycoplasmas has recently undergone a comprehensive revision. The new taxonomy has now been introduced in VetBact, but it will still be possible to search for the alternative species names. Read more about the revised taxonomy of the mollicutes under the Term list of VetBact and see reference 164 below.
Reference(s): No. 164, 170
Updated:2023-03-15

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