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Aspergillus Species Aspergillus colonies are downy to powdery in texture. Aspergillus fumigatus is a thermotolerant fungus and grows well at temperatures over 40°C. This property is unique to Aspergillus fumigatus among the Aspergillus species. In contrast to Aspergillus, the hyphae of Syncephalastrum are nonseptate [1295]. www.doctorfungus.org /thefungi/Aspergillus_spp.htm   (2349 words)

Forensic Analytical - Environmental Lab Services   (Site not responding. Last check: 2007-10-20) Aspergillus flavus has a world-wide distribution and is mainly isolated from tropical and subtropical areas. Aspergillus flavus is a relatively fast-growing fungus that grows well at 25oC and 37°C. Colonies, which appear tufted at maturity, tend to range in color from greenish to yellowish. Aspergillus flavus is known as human, insect and animal pathogen and is a common agent of mycotic sinusitis. www.forensica.com /_miclibrary.asp?x=aspergillus_flavus.txt   (0 words)

Suberu. Preliminary studies of inhibitions in Aspergillus flavus with extracts of two lichens and Bentex-T fungicide. ... Preliminary studies of inhibitions in Aspergillus flavus with extracts of two lichens and Bentex-T fungicide. Mycelial dry weight of Aspergillus flavus, grown on the medium with the extracts of the lichens, was inhibited between 70% - 80% compared to unincorporated control medium. flavus in control medium commenced germination after 2 h while it was mostly after 4 h or 6 h in the incorporated media. www.academicjournals.org /AJB/abstracts/abs2004/Sep/Suberu.htm   (0 words)

Mycotoxin prevention and control in foodgrains - Toxigenic aspergillus and penicillium species Aspergillus species are of very common occurrence in the environment, principally in soils and decaying vegetation, but a number of species are also closely associated with human foods, particularly cereals and nuts (Pitt and Hocking, 1985a). Aspergillus flavus and A. parasiticus were classified by Raper and Fennell (1965) in what was termed the "Aspergillus flavus group", an incorrect terminology now replaced by the correct term "Aspergillus Section Flavi" (Gems et al., 1985). Aspergillus flavus is of ubiquitous occurrence in nature. www.fao.org /docrep/X5036E/x5036E08.htm   (0 words)

Mold-Help.org: Aspergillusthe most comprehensive information Aspergillus is a group of molds which is found world-wide, especially in the autumn and winter in the Northern hemisphere. Aspergillus versicolor - Conidia dimensions are 2 - 3.5 microns. Aspergillus terreus and A. flavus were reported at greater than expected frequencies in the 26-35 degree range and at less than expected frequencies in one of the higher latitude ranges. www.mold-help.org /content/view/408   (4164 words)

Aflatoxin - Biocrawler Aspergillus is common and widespread in nature and are most often found when crops are exposed to a high humidity environment over a long period of time or are damaged in stressful conditions such as drought, a condition which lowers the barrier to entry. The native habitat of Aspergillus is in soil, decaying vegetation, hay, and grains undergoing microbiological deterioration and it invades all types of organic substrates whenever and wherever the conditions are favorable for its growth. While the presence of Aspergillus in food products does not always indicate harmful levels of aflatoxin are also present, it does imply a significant risk in consumption of that product. www.biocrawler.com /encyclopedia/Aflatoxin   (0 words)

Missouri Agricultural Experiment Station - Delta Research Center Because of these unusually hot, dry conditions, Aspergillus flavus and, thus, aflatoxin have the potential to be a problem on corn in areas of Missouri this season. Aspergillus flavus has been reported to occur on many types of organic material including forages, cereal grains, food and feed products and decaying vegetation in cultivated soils. On corn in the field Aspergillus flavus is evident as a greenish-yellow to yellowish-brown, felt-like or powdery mold growth on or between the corn kernels. aes.missouri.edu /delta/croppest/aflacorn.stm   (0 words)

EPA: Aspergillus flavus strain AF36 (006456) Fact Sheet As a pesticide active ingredient, Aspergillus flavus strain AF36 is applied in cotton fields to decrease the amount of aflatoxin-producing fungus on cotton. Aspergillus flavus strain AF36 is not expected to harm humans or the environment when used according to label instructions. Aspergillus flavus strain AF36 was initially isolated in Arizona as a non-aflatoxin producing strain of the fungus. www.epa.gov /pesticides/biopesticides/ingredients/factsheets/factsheet_006456.htm   (832 words)

Aspergillus flavus   (Site not responding. Last check: 2007-10-20) Aspergillus flavus is a plant, animal, and human pathogen that produces the carcinogen, aflatoxin. An organized multidisciplinary team is coordinating research efforts to control this fungus and to prevent the formation of its toxin in food and feeds. A whole genome sequencing project for Aspergillus flavus funded by the USDA/NRI Microbial Genome Sequencing Project and the USDA/ARS is nearing completion. www.aspergillusflavus.org   (0 words)

Aspergillus Aspergillus spp.are thermotolerant fungi that cause significant disease among immunocompromised hosts, primarily pneumonia and sinusitis that will disseminate to other organs including the skin and the brain (see the definition). However, the incidence of this disease is clearly dependent upon a number of factors including the type of and amount of immunosuppression, conditioning process used during transplantation, the severity of GVHD that develops, the institution’s air filtration and the environment, the season and other undefined or competing factors. Outbreaks are associated with unfiltered air, contaminated ventilation systems at intake and exhaust ducts, and dust that is dislodged by renovation and construction. www.hopkinsmedicine.org /heic/ID/aspergillus   (0 words)

Aspergillus flavus Effuse, lime green colonies with rough conidiophores and smooth to very finely roughed conidia distinguish this species from the similar Aspergillus parasiticus that produces very rough conidia. Malignant external otitis due to Aspergillus flavus with fulminant dissemination to the lungs. A Laboratory Guide to Common Aspergillus Species and their Teleomorphs. www.doctorfungus.org /thefungi/Aspergillus_flavus.htm   (340 words)

Aspergillus - MicrobeWiki Aspergillus is a member of the phylum Ascomycota. In 2001, the Aspergillus Trust charity was formed to raise awarness for these diseases and support patients who are suffering from Aspergillus-related illnesses. A non-carcinogenic, aflatoxin-free strain of Aspergillus flavus, A. microbewiki.kenyon.edu /mediawiki-1.6.6/index.php/Aspergillus   (0 words)

Aspergillus - Wikipedia, the free encyclopedia Aspergillus was first catalogued in 1729 by the Italian priest and biologist Pietro Antonio Micheli. Aspergillus species are highly aerobic and are found in almost all oxygen-rich environments, where they commonly grow as molds on the surface of a substrate, as a result of the high oxygen tension. Firstly, koji mold such as Aspergillus oryzae is used to convert the starch in the rice to sugars (saccharification), which are subsequently fermented by other microorganisms, such as yeast (Saccharomyces) and lactic acid bacteria. en.wikipedia.org /wiki/Aspergillus   (0 words)

Publication: Aspergillus flavus and Aflatoxins in Corn Not all isolates of A. flavus produce aflatoxin and isolates that are capable of producing aflatoxin do not always synthesize the toxin. Prolonged drought and high temperatures during the growing season favor the development of A. flavus, restrict the development of competitors of A. flavus, and inhibit normal pollination in the corn plant. Aspergillus flavus grain mold on corn is often characterized by visible light green mold on the surface of the kernels. www.ianrpubs.unl.edu /epublic/pages/publicationD.jsp?publicationId=350   (0 words)

Lack of Host Specialization in Aspergillus flavus -- St. Leger et al. 66 (1): 320 -- Applied and Environmental ... Aspergillus species are associated with disease in plants, insects, man, and other animals (4, 14, 24). Preharvest infection of corn silks and kernels by Aspergillus flavus. Scully, L. R., Bidochka, M. A cysteine/methionine auxotroph of the opportunistic fungus Aspergillus flavus is associated with host-range restriction: a model for emerging diseases. aem.asm.org /cgi/content/full/66/1/320   (0 words)

Monitoring trends in Aspergillus flavus S strain incidence in Arizona flavus is a soil-inhabiting fungus that lives off of decaying plant and animal debris. flavus isolates from the soil that are strain S is one indication of the toxigenicity of the A. flavus community. Spatial and temporal patterns of Aspergillus flavus strain composition and propagule density in Yuma County, Arizona, soils. ag.arizona.edu /PLP/GIS/Af_words2.html   (0 words)

Aspergillus flavus Precipitating IgG Antibodies Aspergillus mold can be found in soil, foods, fresh water and other natural sources including compost, barley, tobacco and Esparto grass dust (stucco). Aspergillus infection can also result in allergic bronchopulmonary aspergillosis (ABPA), a condition where airway colonization of individuals with asthma or cystic fibrosis resuts in increased inflammation and destruction of bronchial structural elements. Testing for aspergillus precipitating IgG antibodies has been shown to be of some clinical utility in the assessment of patients with potential ABPA. www.labcorp.com /datasets/labcorp/html/chapter/mono/al003300.htm   (0 words)

Tom Volk's Fungus of the Month for February 1997 Aspergillus is a member of the "deuteromycetes," or Fungi Imperfecti, which is a group (technically) reserved for fungi for which there is no known sexual state. Aspergillus species are very difficult to distinguish from one another without a great deal of practice. Aspergillus is named for a device called an aspergillum, which is used by a priest at a Catholic mass to sprinkle holy water on the faithful. botit.botany.wisc.edu /toms_fungi/feb97.html   (0 words)

NCBI Aspergillus Genome Resources Aspergillus is a large genus of filamentous fungi that encompasses many species of medical, agricultural, industrial, and scientific importance. The NCBI Fungal Genomes Central page is a portal to information and resources pertaining to fungi and fungal sequencing projects from NCBI and the fungi research community. ANNOUNCING the release of the Aspergillus fumigatus Af293 genome assembly and annotation in Map Viewer. www.ncbi.nlm.nih.gov /genome/guide/aspergillus   (0 words)

Fungal Genomic Cosmid and cDNA Sequencing Fungal (Aspergillus nidulans, Aspergillus parasiticus and Neurospora crassa) Cosmid and cDNA Sequencing Fungal (Aspergillus nidulans, Aspergillus flavus and Neurospora crassa) cDNA Sequencing The Aspergillus flavus EST's are being generated by Doris Kupfer with the technical help of Laura Hern and Yuhong Tang in collaboration with Nancy Keller. www.genome.ou.edu /fungal.html   (0 words)

Interspecific mitochondrial DNA restriction fragment length polymorphisms in Aspergillus section Flavi -- Quirk and ... Feibelman TP, Cotty PJ, Doster MA, Michailides TJ., 1998 A morphologically distinct strain of Aspergillus nomius. McAlpin CE, Mannarelli B., 1995 Construction and characterization of a DNA probe for distinguishing strains of Aspergillus flavus. Yuan GF, Liu CS, Chen CC., 1995 Differentiation of Aspergillus parasiticus from Aspergillus sojae by random amplification of polymorphic DNA. www.mycologia.org /cgi/content/full/94/6/1078   (0 words)

BREEDING FOR RESISTANCE TO ASPERGILLUS FLAVUS IN ALMOND Aspergillus flavus Link, although only a weak pathogen of almond (Prunus dulcis (Mill.) D.A. Webb.), can contaminate susceptible nuts with mycotoxins. The almond genetic improvement program at Davis, California is pursuing resistance to Aspergillus through the breeding for barriers to infection and colonization in the shell (endocarp), the seed coat and seed cotyledon. Cultivar differences in the rate of colonization and sporulation of aflatoxigenic Aspergillus flavus on both intact and wounded seed were observed in a selection of almond cultivars grown in California. www.actahort.org /books/373/373_14.htm   (0 words)

Aspergillus flavus | Genomics | flavus strain NRRL 3357 to the level of 5 fold sequence coverage. flavus provides a powerful resource for research on the biology and evolution of this important plant and animal pathogen. Further, we anticipate that the sequence will reveal critical genetic processes in the fungus that could be interrupted to control aflatoxin contamination, which causes hundreds of millions of dollars in crop losses during years of severe outbreaks. www.aspergillusflavus.org /genomics   (0 words)

Effect of competition and adverse culture conditions on aflatoxin production by Aspergillus flavus through successive ... Holtmeyer MG, Wallin JR., 1981 Incidence and distribution of airborne spores of Aspergillus flavus in Missouri. ———, ———, Dorner JW., 1995 Effect of corn and peanut cultivation on soil populations of Aspergillus flavus and A. Mayne RY, Bennett JW, Tallant J., 1971 Instability of an aflatoxin-producing strain of Aspergillus parasiticus. www.mycologia.org /cgi/content/full/94/5/741   (0 words)

Alkaline Serine Proteinase Is a Major Allergen of Aspergillus flavus, a Prevalent Airborne Aspergillus Species in the ... In the present study, we identified, purified and characterized the allergen(s) from Aspergillus flavus, a predominant airborne Aspergillus species in the Taipei area. flavus was purified from the culture medium by ammonium sulfate precipitation and DEAE ion exchange chromatography. The N-terminal amino acid sequence of the purified allergen (Asp fl 13) is identical to that determined previously for the 34-kD major allergen in the crude extract of A. content.karger.com /ProdukteDB/produkte.asp?Doi=24205   (0 words)

eMedicine - Aspergillosis : Article Excerpt by: Annie Chiu, MD   (Site not responding. Last check: 2007-10-20) Pathophysiology: Cutaneous aspergillosis is caused by infection with ubiquitous soil and water dwelling saprophytes of the Aspergillus genus. Aspergillus fumigatus is the most common pathogen associated with disseminated disease, whereas Aspergillus flavus or Aspergillus terreus most often cause the less frequent primary infections of the skin. Aspergillus niger and Aspergillus ustus have also been cultured from cutaneous lesions. www.emedicine.com /derm/byname/aspergillosis.htm   (0 words)

Monoclonal antibodies against a 97-kilodalton antigen from Aspergillus flavus -- Hetherington et al. 1 (1): 63 -- ... Monoclonal antibodies against a 97-kilodalton antigen from Aspergillus flavus -- Hetherington et al. Aspergillus flavus that all reacted against one 97-kDa antigen by western found on A. flavus that is both surface bound and an exoantigen. cdli.asm.org /cgi/content/abstract/1/1/63   (0 words)

A Circadian Oscillator in Aspergillus spp. Regulates Daily Development and Gene Expression -- Greene et al. 2 (2): 231 ... flavus and Aspergillus nidulans by morphological and molecular flavus developmental rhythms are entrained by environmental cycles. (B) flavus strain 12S was inoculated onto CM race tubes and grown for 3 days in 12:12 LD at 30°C (not shown) and then transferred to DD with 24-h (12:12) cycles of 30 and 38°C. The mycelial growth front was marked at the transition from low to high temperature. ec.asm.org /cgi/content/full/2/2/231   (0 words)

Indole-Diterpene Gene Cluster from Aspergillus flavus -- Zhang et al. 70 (11): 6875 -- Applied and Environmental ... flavus genomic DNA probed with atmG and ggsA. Sclerotial metabolites of Aspergillus flavus toxic to a detritivorous maize insect (Carpophilus hemipterus, Nitidulidae). Aspergillus flavus expressed sequence tags for identification of genes with putative roles in aflatoxin contamination of crops. aem.asm.org /cgi/content/full/70/11/6875   (0 words)

AFLMP1 Encodes an Antigenic Cell Wall Protein in Aspergillus flavus -- Woo et al. 41 (2): 845 -- Journal of Clinical ... flavus hyphae with preimmune guinea pig serum (a), guinea pig anti-A. flavus and are useful for the diagnosis of the corresponding Detection of cell wall galactomannoprotein Afmp1p in culture supernatants of Aspergillus fumigatus and in sera of aspergillosis patients. jcm.asm.org /cgi/content/full/41/2/845   (0 words)

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