Pherotypes are driving genetic differentiation within Streptococcus pneumoniae
نویسندگان
چکیده
منابع مشابه
Genetic relatedness within serotypes of penicillin-susceptible Streptococcus pneumoniae isolates.
The molecular epidemiological characteristics of all Streptococcus pneumoniae strains isolated in a nationwide manner from patients with meningitis in The Netherlands in 1994 were investigated. Restriction fragment end labeling analysis demonstrated 52% genetic clustering among these penicillin-susceptible strains, a value substantially lower than the percentage of clustering among Dutch penici...
متن کاملdifferentiation of penicillin susceptible and nonsusceptible streptococcus pneumoniae
introduction : streptococcus pneumoniae cause morbidity and mortality in infants and younger children. because of high prevalence of penicillin resistance, rapid and reliable diagnostic techniques for penicillin non-susceptible s. pneumoniae (pnssp) are important for prevention and treatment. we investigated the association of the restriction length polymorphism (rflp) patterns for pbp2b to dis...
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Despite the benefits of MALDI-TOF MS technology (Matrix-Assisted Laser Desorption-Ionization Time-Of-Flight Mass Spectrometry) reported worldwide and the continuous improving of the available databases, discrimination between Streptococcus pneumoniae and closely related species within the Streptococcus mitis group (SMG) using this methodology has been suboptimal. However, the accurate identific...
متن کاملPolymorphic competence peptides do not restrict recombination in Streptococcus pneumoniae.
Understanding the factors that limit recombination in bacteria is critical in order to better understand and assess its effects on genetic variation and bacterial population genetic structure. Transformation in the naturally competent bacterium, Streptococcus pneumoniae, is regulated by a polymorphic competence (com) apparatus. It has been suggested that polymorphic types, called pherotypes, ge...
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A biochemical scheme was developed by which strains of Streptococcus constellatus, Streptococcus intermedius, and Streptococcus anginosus can reliably be distinguished from within the "Streptococcus milleri group." Strains identified as S. intermedius were differentiated by the ability to produce detectable levels of alpha-glucosidase, beta-galactosidase, beta-D-fucosidase, beta-N-acetylgalacto...
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ژورنال
عنوان ژورنال: BMC Microbiology
سال: 2009
ISSN: 1471-2180
DOI: 10.1186/1471-2180-9-191