منابع مشابه
Sporangiospore Size Dimorphism Is Linked to Virulence of Mucor circinelloides
Mucor circinelloides is a zygomycete fungus and an emerging opportunistic pathogen in immunocompromised patients, especially transplant recipients and in some cases otherwise healthy individuals. We have discovered a novel example of size dimorphism linked to virulence. M. circinelloides is a heterothallic fungus: (+) sex allele encodes SexP and (-) sex allele SexM, both of which are HMG domain...
متن کاملYeast killer toxins and dimorphism.
The differential action of four selected yeast killer toxins on the mycelial and yeast forms of four isolates of the dimorphic fungus Sporothrix schenckii was comparatively evaluated. The results confirmed that the yeast killer phenomenon is present among hyphomycetes and yeasts and that both morphological forms of S. schenckii are susceptible to the action of the same yeast killer toxin. Quant...
متن کاملControl of dimorphism in Mucor by hexoses: inhibition of hyphal morphogenesis.
In anaerobic cultures of Mucor rouxii, morphogenesis was strongly dependent on hexose concentration as well as pCO(2). At low levels of hexose or CO(2), or both, hyphal development occurred; at high levels, the fungus developed as yeast cells. Other dimorphic strains of Mucor responded similarly to hexose and CO(2) but differred in their relative sensitivity to these agents. Glucose was the mos...
متن کاملProperties of chitin synthetase in isolated chitosomes from yeast cells of Mucor rouxii.
Chitin synthetase was isolated and purified 120-fold from the supernatant fraction (54,500 X g) of broken yeast cells of Mucor rouxii. The purified preparations consisted mainly of chitin synthetase particles (chitosomes) with an average size larger than 7 X 10(6) daltons (by gel filtration) and an average sedimentation coefficient of 105 S. The samples also contained other enzyme complexes (fa...
متن کاملLipoxygenase inhibitors shift the yeast/mycelium dimorphism in Ceratocystis ulmi.
The yeast-mycelium dimorphism in Ceratocystis ulmi, the causative agent of Dutch elm disease, was switched by gossypol, nordihydroguaiaretic acid, and propylgallate. In each case the mycelial form was converted to the yeast form. These compounds are recognized lipoxygenase inhibitors. Inhibitors of cyclooxygenase and thromboxane synthetase did not cause mycelia to shift to the yeast form. We su...
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ژورنال
عنوان ژورنال: Bacteriological Reviews
سال: 1963
ISSN: 0005-3678
DOI: 10.1128/br.27.3.293-304.1963