Publications

production and isolation of siderophores from the soil fungus epicoccum purpurascens.	a large number of iron transport agents, siderophores, which stimulated the growth of arthrobacter flavescens jg-9, were isolated during a study of the antitumor activity associated with the metabolic products of the fungus epicoccum purpurascens. the production of the siderophores was significantly enhanced in a variety of media by culture of the fungus in the near absence of ferric iron. a novel method of purification involving a carboxylic ion-exchange resin separated the siderophores into fo ...	1981	6453608
carotenogenesis in diphenylamine-treated epicoccum nigrum link.		1969	5813303
lipids produced by epicoccum nigrum in submerged culture.	1. the lipids of the red mycelium of the fungus epicoccum nigrum link were investigated. four carotenoid pigments were isolated and identified as beta-carotene, gamma-carotene, rhodoxanthin and torularhodin. 2. for the first time rhodoxanthin was isolated as a fungal metabolite. 3. linoleic acid was the major fatty acid in the total lipids. 4. ergosterol was present in the lipids in the non-esterified form.	1968	5753092
carotenoid incorporation into rhodoxanthin by epicoccum nigrum link.		1968	5734036
fungistatic action of the pigment secreted by the fungus epicoccum nigrum link.		1970	5530290
a note on properties of pigments produced by epicoccum nigrum.		1970	5465560
on some pigments of epicoccum nigrum link: their isolation and structure elucidation and a biosynthetic pathway of rhodoxanthin.		1969	4920722
carotenoids in some ultraviolet mutants of epicoccum nigrum link.		1970	4321157
black fungi: a survey of dematiaceous hyphomycetes from clinical specimens identified over a five year period in a reference laboratory.	five hundred and fifty six dematiaceous hyphomycetes, the great majority referred from other laboratories, were identified by us over a five year period. of these, thirty five were regarded as being of probable pathogenetic significance. these included seven isolates associated with chromoblastomycosis, and seven isolates thought to be causing phaeohyphomycosis. there were six strains of phaeoannellomyces werneckii and five strains of sporothrix schenckii. seven isolates, all strains of aureobas ...	1987	3431915
skin testing with extracts of fungal species derived from the homes of allergy clinic patients in toronto, canada.	airborne fungi in the homes of patients with allergic rhinitis or asthma, from a toronto allergy clinic population, were isolated, quantified and identified to species. allergen extracts were prepared from sixteen of these isolated species and used for skin-prick testing of twenty-six patients. fourteen of the total patients reacted to one or more of these extracts at 1:10 (w/v) concentrations. the most common positive skin responses (8/14 to 6/14) were found for cladosporium cladosporioides, al ...	1988	3349592
effect of surface sterilization, fumigation and gamma irradiation on the microflora and germination of barley seeds.	sodium hypochlorite (naocl) and mercuric chloride (hgcl2) surface sterilization, methyl bromide and propylene oxide fumigation and gamma irradiation treatments were compared for their effectiveness in killing microorganisms on or within barley seeds. surface sterilization with 12.5, 25 or 50% (v/v) naocl for 5, 15 or 30 min, decreased fusarium spp., epicoccum purpurascens, and bacillus spp. but did not kill alternaria alternata. however, surface sterilization with 0.1 or 0.2% (w/v) hgcl2 for 3 m ...	1991	1863528
comparison between antifungal and antibacterial activities of several strains of epicoccum purpurascens from the mediterranean area.	the antimicrobial activities of seven epicoccum purpurascens strains isolated either from evergreen oak leaves (quercus ilex) collected over a period of one year, or from the atmosphere were compared in vitro. two strains sporulated and conspicuously inhibited the growth of staphylococcus aureus and trichophyton mentagrophytes. thin-layer chromatographic studies showed the existence of some compounds, such as flavipin, which were common to all the strains. epicorazine b was present in the extrac ...	1991	1784310
the allergens of epicoccum nigrum link. i. identification of the allergens by immunoblotting.	two atmospheric isolates of epicoccum nigrum (en) were grown under sporulation conditions. dialyzed extracts of spores, (greater than 95% pure) and pure mycelia were used for skin testing, sodium dodecyl sulfate-polyacrylamide gel electrophoresis, and immunoblotting. by skin testing, 49 of the 126 atopic patients were found to be sensitive to en in st. louis, mo., and corpus christi, texas, combined. on immunoblotting, which was performed on 17 sera, 44 bands (12.3 to 119.0 kd) were detected; si ...	1992	1629496
evaluation of filamentous fungi isolated from petals of bean and rapeseed for suppression of white mold.	the influence of filamentous fungi isolated from petals of bean and rapeseed on white mold caused by sclerotinia sclerotiorum was evaluated. in laboratory trials, macerates of agar plugs containing hyphal fragments of the pathogen in combination with individual fungi were applied onto celery petioles, and subsequent lesion diameters were recorded. the efficacy of 10 fungi exhibiting a spectrum of lesion suppression on celery was correlated with the efficacy of the same fungi in growth-room (r = ...	1992	1521186
possible role of solar radiation on the viability of some air fungi in egypt.	the high occurrence of alternaria humicola and the moderate occurrence of stemphylium verruculosum, rhizopus nigricans, and epicoccum nigrum in the air of egypt could be correlated to their apparent resistance to solar radiation. cladosporium herbarum, aspergillus niger, and penicillium oxalicum, although highly occurring, were light-sensitive. the miniumum solar radiation in november, coupled with the highest total fungal catch, dominated by cladosporium herbarum, reveals the importance of sola ...	1976	1037050
a study on fungal radioresistance and sensitivity.	lower doses of gamma and x-rays (5 and 1 krad, respectively) stimulated the spore germination and growth of 7 tested fungi. higher doses (500 and 100 krad, respectively) revealed that epicoccum nigrum was the most radioresistant, while alternaria humicola, stemphylium verruculosum, rhizopus nigricans, and cladosporium herbarum were of moderate resistance. aspergillus niger and penicillium oxalicum were the most radiosensitive. protein and polysaccharide synthesis were inhibited in the mycelium d ...	1977	857505
isolation and biological activity of the pigments of the mold epicoccum nigrum.		1976	818140
new antibiotics from the fungus epicoccum nigrum. i. fermentation, isolation and antibacterial properties.	an atmosphere isolate of the fungus epicoccum nigrum was found to exhibit an activity against staphylococcus aureus. a more active, non-sporulating variant of this strain was selected. from its fermentation broth, two novel compounds, epicorazines a and b, were isolated by preparative tlc and tested against a series of bacteria.	1978	721706
molds on vegetables at the time of harvest.	the mean numbers of colony-forming units of molds present on vegetables at the time of harvest were in the range of 4.2 x 10(3) to 6.7 x 10(3)/g for all vegetables except cucurbits and asparagus. the numbers were not influenced by cultivars within species, duration of the growing season, distant separation of the growing fields, or elevation above ground. numbers increased with rainfall during either of 3 days before harvest and decreased when the mean daily temperature exceeded 24 degrees c. th ...	1978	646353
new antibiotics from the fungus epicoccum nigrum. iii. epicorazine b: structure elucidation and absolute configuration.	comparison of uv, ir, pmr and cd spectra of epicorazine b with those of epicorazine a, a previously isolated metabolite of epicoccum nigrum, showed that they were isomers with the same epidithiodiketopiperazine skeleton. x-ray determination of epicorazine b indicated that the difference is related to a cis-trans configuration.	1978	569142
new antibiotics from the fungus epicoccum nigrum. ii. epicorazine a: structure elucidation and absolute configuration.	an antibiotic, epicorazine a, isolated from a particular strain of the fungus epicoccum nigrum, was shown to be a new epidithiodiketopiperazine from its uv, ir, mass, nmr and cd spectra. x-ray diffraction measures confirmed this structure and its absolute configuration.	1978	569141