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Related Experiment Videos

Spiroplasmas: evolutionary relationships and biodiversity.

Laura B Regassa1, Gail E Gasparich

  • 1Department of Biology, Georgia Southern University, PO Box 8042, Statesboro, GA 30460, USA. LRegassa@GeorgiaSouthern.edu

Frontiers in Bioscience : a Journal and Virtual Library
|May 25, 2006
PubMed
Summary

Spiroplasmas, wall-less bacteria found in insects, exhibit diverse host interactions and diseases. Research is advancing with new species identification criteria and genomic data.

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Area of Science:

  • Microbiology
  • Bacteriology
  • Prokaryotic Biology

Background:

  • Spiroplasmas are wall-less, helical bacteria with small genomes, often associated with insects.
  • They inhabit diverse environments, including plants, ticks, and crustaceans, with varied symbiotic relationships.
  • Some Spiroplasma species cause agricultural diseases and insect reproductive disorders.

Purpose of the Study:

  • To review the current understanding of Spiroplasma biology, classification, and host interactions.
  • To highlight the challenges and advancements in Spiroplasma species characterization and nomenclature.
  • To underscore the potential for future research in Spiroplasma genomics and manipulation.

Main Methods:

  • Traditional classification based on surface antigen cross-reactivity (serogroups).

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  • Phylogenetic analysis using 16S rDNA sequences.
  • Phenotypic and genotypic characterization following minimal standards.

    • Main Results:

    • Spiroplasma classification into 34 serogroups, with some supported by phylogenetic data.
    • Less than 40 Spiroplasma species fully characterized with binomial names.
    • Ongoing revision of minimal standards for species characterization.

    Conclusions:

    • Spiroplasma research is advancing with new species identification criteria and genomic data.
    • Improved understanding of Spiroplasma diversity, pathogenicity, and host-range is expected.
    • New genetic tools will facilitate further investigation of these unique bacteria.