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Identification of Rare Bacterial Pathogens by 16S rRNA Gene Sequencing and MALDI-TOF MS

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Revised group classification of the genus Spiroplasma

D L Williamson¹, R F Whitcomb, J G Tully

¹Department of Anatomical Sciences, State University of New York, Stony Brook 11794-8081, USA. dwmson@mail.som.sunysb.edu

International Journal of Systematic Bacteriology

|May 2, 1998

Summary

This revision details significant updates to Spiroplasma systematics, introducing new species and group designations. Research continues to uncover novel Spiroplasma strains primarily in insect reservoirs.

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Area of Science:

Microbiology
Systematics
Insect-borne Pathogens

Background:

The genus Spiroplasma, belonging to the class Mollicutes, has undergone substantial taxonomic revisions since 1987.
Previous updates included the addition of new groups and subgroups, and the assignment of species names to existing designations.

Purpose of the Study:

To present a comprehensive revision of Spiroplasma systematics.
To incorporate newly identified Spiroplasma strains and propose new group designations.
To document taxonomic descriptions and species names for previously ungrouped organisms.

Main Methods:

Taxonomic classification and species naming of newly isolated Spiroplasma strains.
Grouping of novel Spiroplasma strains based on phenotypic and genotypic characteristics.
Serological analysis to investigate intergroup relationships.

Main Results:

Six new Spiroplasma species have been formally described and assigned group numbers: S. alleghenense (XXVI), S. lineolae (XXVII), S. platyhelix (XXVIII), S. montanense (XXXI), S. helicoides (XXXII), and S. tabanidicola (XXXIII).
New group designations are proposed for 10 Spiroplasma strains, including three unnamed strains (TIUS-1 in XXIX, BIUS-1 in XXX, BARC 1901 in XXXIV).
Strain BARC 2649 has been proposed as a new subgroup of group VIII, and intergroup serological relationships were identified.

Conclusions:

The ongoing discovery of Spiroplasma strains, particularly from Diptera: Tabanidae, highlights the importance of insect reservoirs.
This revision expands the known diversity within the genus Spiroplasma and refines its taxonomic framework.
Further research into Spiroplasma systematics and their ecological roles is warranted.