Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Experiment Videos

Numerical taxonomy of staphylococci.

M Goodfellow, G Alderson, M R Nahaie

    Zentralblatt Fur Bakteriologie, Mikrobiologie, Und Hygiene. Series A, Medical Microbiology, Infectious Diseases, Virology, Parasitology
    |November 1, 1983
    PubMed
    Summary

    This study used numerical phenetics to classify over 200 staphylococci strains, identifying eighteen distinct clusters. Findings question the reliability of some tests for identifying coagulase-negative staphylococci.

    Related Concept Videos

    You might also read

    Related Articles

    Articles linked to this work by shared authors, journal, and citation graph.

    Sort by
    Same author

    Permeabilizing effects of sub-inhibitory concentrations of microcystin on the growth of Escherichia coli.

    FEMS microbiology letters·2004
    Same author

    Cryopreservation of Giardia lamblia.

    The Veterinary record·2004
    Same author

    Detection of Staphylococcus aureus by 16S rRNA directed in situ hybridisation in a patient with a brain abscess caused by small colony variants.

    Journal of neurology, neurosurgery, and psychiatry·2003
    Same author

    Continuous monitoring of rumen pH - a case study with cattle.

    Journal of veterinary medicine. A, Physiology, pathology, clinical medicine·2003
    Same author

    Hyoid apparatus and pharynx in the lion (Panthera leo), jaguar (Panthera onca), tiger (Panthera tigris), cheetah (Acinonyxjubatus) and domestic cat (Felis silvestris f. catus).

    Journal of anatomy·2002
    Same author

    Increased expression of clumping factor and fibronectin-binding proteins by hemB mutants of Staphylococcus aureus expressing small colony variant phenotypes.

    Infection and immunity·2002

    Area of Science:

    • Microbiology
    • Bacteriology
    • Systematic Bacteriology

    Background:

    • Staphylococci are significant bacteria found in human and animal sources.
    • Accurate classification of Staphylococcus species is crucial for clinical and research purposes.
    • Existing identification methods for coagulase-negative staphylococci may have limitations.

    Purpose of the Study:

    • To perform a numerical phenetic analysis of a large collection of staphylococci strains.
    • To compare the phenetic relationships between staphylococci from various sources and established species.
    • To evaluate the reliability of standard identification tests for coagulase-negative staphylococci.

    Main Methods:

    • A numerical phenetic survey was conducted using 115 unit characters for over 200 staphylococci strains.

    Related Experiment Videos

  • Data analysis involved the Jaccard coefficient and the unweighted pair group method with averages (UPGMA) algorithm.
  • Test error was estimated at 3.49% and found to have minimal impact on cluster composition.

    • Main Results:

    • Staphylococci were assigned to eighteen clusters of four or more strains and three single-member clusters.
    • Most clusters were distinct and homogeneous, with two clusters further divided into subclusters.
    • Several clusters were identified as established taxa, including Staphylococcus aureus, S. epidermidis, and S. saprophyticus, while others may represent new variation centers.

    Conclusions:

    • Numerical phenetics provides a robust framework for classifying staphylococci, revealing distinct clusters and potential new taxa.
    • The study identified eighteen phenetic clusters, aligning many with known Staphylococcus species.
    • Results raise concerns about the accuracy and reliability of certain diagnostic tests used for coagulase-negative staphylococci identification.