Actinomyces viscosusCell-Free Synthesis of Extracellular Slime Polysaccharide
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چکیده
منابع مشابه
Extracellular Polysaccharide Mutants
Two extracellular polysaccharide mutants of Streptococcus mutans GS-5 were obtained and examined. The mutants were distinguished by colonial morphology and by growth on and adherence to hard surfaces. A technique was devised which allowed these bacteria to be studied as they appeared when grown on a hard surface in liquid medium which contained sucrose. Negative stains, replicas, and scanning e...
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Staphylococcus aureus produced an inhibitory factor that suppressed slime formation by Psuudomonas aeruginosa but had little effect on the growth of the organism. The inhibitory factor was not found in broth cultures but could be extracted from cultures grown on solid agar. The inhibitory factor moderately inhibited gram-negative bacteria in addition to inhibiting a variety of gram-positive bac...
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Efflux transporters have been implicated in regulating bacterial virulence properties such as resistance to antibiotics, biofilm formation and colonization. The pathogenicity of Streptococcus mutans, the primary etiologic agent of human dental caries, relies on the bacterium's ability to form biofilms on tooth surface. However, the studies on efflux transporters in S. mutans are scare and the f...
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Members of the genus LactobacilZus were examined for their ability to synthesize extracellular polysaccharide from sucrose. Strains physiologically similar to L. pastorianus synthesized a glucan. Other strains liberated a complex polysaccharide which contained mannose and glucose. Variants of the glucan-producing strains occurred spontaneously and these lacked the capacity to synthesize glucan ...
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Light microscopy, transmission electron microscopy, and scanning electron microscopy were used to visualize the extracellular slime of Proteus mirabilis swarm cells. Slime was observed with phase-contrast microscopy after fixation in hot sulfuric acid-sodium borate. Ruthenium red was used to stain slime for transmission electron microscopy. Copious quantities of extracellular slime were observe...
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ژورنال
عنوان ژورنال: Microbiology and Immunology
سال: 1985
ISSN: 0385-5600
DOI: 10.1111/j.1348-0421.1985.tb00850.x