Charles Thom

American mycologist (1872-1956).

Charles Thom (November 11, 1872 – May 24, 1956) was an American microbiologist and mycologist. Born and raised in Illinois, he received his PhD from the University of Missouri, the first such degree awarded by that institution. He studied the microbiology of dairy products and soil fungi, and in particular researched the genera Aspergillus and Penicillium. His work influenced the establishment of standards for food handling and processing in the USA. He pioneered the use of culture media to grow microorganisms, and, with food chemist James N. Currie, developed a process to mass-produce citric

Abbreviations: Thom
Occupations: mycologist, microbiologist
Citizenships: United States
Dates: 1872-11-11T00:00:00Z – 1956-05-24T00:00:00Z
Birth place: Minonk
Direct attributions: 1 plant, 50 fungi
Authorship mentions: 1 plant, 59 fungi

50 fungi attributed, 9 fungi contributed to59 fungi:

Penicillium roqueforti (P Roqueforti) Thom 1906
fungi species in the aspergillaceae family
Penicillium roqueforti is a common saprotrophic fungus in the genus Penicillium. Widespread in nature, it can be isolated from soil, decaying organic matter, and plants. The major industrial uses of this fungus are the production of blue cheeses, flavouring agents, antifungals, polysaccharides, proteases, and other enzymes. The fungus has been a constituent of Roquefort, Stilton, Danish blue, Cabrales, and other blue cheeses. A few blue cheeses, such as Gorgonzola, are made instead with Penicillium glaucum.
Penicillium chrysogenum Thom 1910
fungi species in the aspergillaceae family
Penicillium chrysogenum (formerly known as Penicillium notatum) is a species of fungus in the genus Penicillium. It is common in temperate and subtropical regions and can be found on salted food products, but it is mostly found in indoor environments, especially in damp or water-damaged buildings. It has been recognised as a species complex that includes P. notatum, P. meleagrinum, and P. cyaneofulvum. Molecular phylogeny has established that Alexander Fleming's first discovered penicillin-producing strain is of a distinct species, P. rubens, and not of P. notatum. It has rarely been reported
Penicillium camemberti Thom 1906
fungi species in the aspergillaceae family
Penicillium camemberti is a species of fungus in the genus Penicillium. It is used in the production of soft-ripened cheeses, including Camembert, Brie, Langres, Coulommiers, and Cambozola, on which colonies of P. camemberti form a hard, white crust. It is responsible for giving these cheeses their distinctive flavors. An allergy to the antibiotic penicillin does not necessarily imply an allergy to cheeses made using P. camemberti. When making soft cheese that involves P. camemberti, the mold may be mixed into the ingredients before being placed in the molds, or it may be added to the outside
Aspergillus terreus Thom 1918
fungi species in the aspergillaceae family
Aspergillus terreus, also known as Aspergillus terrestris, is a fungus (mold) found worldwide in soil. Although thought to be strictly asexual until recently, A. terreus is now known to be capable of sexual reproduction. This saprotrophic fungus is prevalent in warmer climates such as tropical and subtropical regions. Aside from being located in soil, A. terreus has also been found in habitats such as decomposing vegetation and dust. A. terreus is commonly used in industry to produce important organic acids, such as itaconic acid and cis-aconitic acid, as well as enzymes, like xylanase. It
Penicillium citrinum Thom 1910
fungi species in the aspergillaceae family
Penicillium citrinum is an anamorph, mesophilic fungus species of the genus of Penicillium which produces tanzawaic acid A-D, ACC, Mevastatin, Quinocitrinine A, Quinocitrinine B, and nephrotoxic citrinin. Penicillium citrinum is often found on moldy citrus fruits and occasionally it occurs in tropical spices and cereals. This Penicillium species also causes mortality for the mosquito Culex quinquefasciatus. Because of its mesophilic character, Penicillium citrinum occurs worldwide. The first statin (Mevastatin) was 1970 isolated from this species.
Aspergillus ustus (Bainier) Thom & Church 1926
fungi species in the aspergillaceae family
Aspergillus ustus is a microfungus and member of the division Ascomycota. It is commonly found in indoor environments and soil. Isolated cases of human infection resulting from A. ustus have been described; however the majority of these are nail infections.
Aspergillus flavipes (Bainier & R. Sartory) Thom & Church 1926
fungi species in the aspergillaceae family
Aspergillus flavipes is a species of fungus in the genus Aspergillus. It is from the Flavipedes section. The species was first described in 1926. It has been reported to produce sterigmatocystin, citrinin, and lovastatin.
Penicillium oxalicum Currie & Thom 1915
fungi species in the aspergillaceae family
Penicillium oxalicum is an anamorph species of the genus Penicillium which was isolated from rhizosphere soil of pearl millet. Penicillium oxalicum produces secalonic acid D, chitinase, oxalic acid, oxaline and β-N-acetylglucosaminidase and occurs widespread in food and tropical commodities. This fungus could be used against soilborne diseases like downy mildew of tomatoes
Penicillium commune Thom 1910
fungi species in the aspergillaceae family
Penicillium commune is an indoor fungus belonging to the genus Penicillium. It is known as one of the most common fungi spoilage moulds on cheese. It also grows on and spoils other foods such as meat products and fat-containing products like nuts and margarine. Cyclopiazonic acid and regulovasine A and B are the most important mycotoxins produced by P. commune. The fungus is the only known species to be able to produce both penitrem A and roquefortine. Although this species does not produce penicillin, it has shown to have anti-pathogenic activity. There are no known plant, animal or human
Aspergillus sydowii (Aspergillus Sydowi) (Bainier & Sartory) Thom & Church 1926
fungi species in the aspergillaceae family
Aspergillus sydowii is a pathogenic fungus that causes several diseases in humans. It has been implicated in the death of sea fan corals (Gorgonia spp.) in the Caribbean Sea.
Penicillium spinulosum Thom 1910
fungi species in the aspergillaceae family
Penicillium spinulosum (spinulosus means with small spines in Latin) is a non-branched, fast-growing fungus with a swelling at the terminal of the stipe (vesiculate) in the genus Penicillium. P. spinulosum is able to grow and reproduce in environment with low temperature and low water availability, and is known to be acidotolerant. P. spinulosum is ubiquitously distributed, and can often be isolated from soil. Each individual strain of P. spinulosum differs from others in their colony morphology, including colony texture, amount of sporulation and roughness of conidia and conidiophores.
Penicillium simplicissimum (Oudem.) Thom 1930
fungi species in the aspergillaceae family
Penicillium simplicissimum is an anamorph species of fungus in the genus Penicillium which can promote plant growth. This species occurs on food and its primary habitat is in decaying vegetations Penicillium simplicissimum produces verruculogene, fumitremorgene B, penicillic acid, viridicatumtoxin, decarestrictine G, decarestrictine L, decarestrictine H, decarestrictine I, decarestrictine K decarestrictine M, dihydrovermistatin, vermistatin and penisimplicissin
Penicillium melinii Thom 1930
fungi species in the aspergillaceae family
Penicillium melinii is an anamorph species of the genus Penicillium which produces griseofulvin and beta-Nitropropionic acid.
Penicillium decumbens Thom 1910
fungi species in the aspergillaceae family
Penicillium decumbens is an anamorph species of the genus of Penicillium which occurs widespread in nature, mainly in subtropical and tropical soil but it also occurs in food. Analysis have shown that Penicillium decumbens has antibiotic activity Penicillium decumbens produces the cyclopentenone cyclopenicillone
Aspergillus unguis (Émile-Weill & L. Gaudin) Thom & Raper 1934
fungi species in the aspergillaceae family
Aspergillus unguis is a species of fungus in the genus Aspergillus, and the asexual state (anamorph) of Emericella unguis. Aspergillus unguis is a filamentous soil-borne fungus found on decomposing plant matter and other moist substrates including with building materials and household dust. Aspergillus unguis occurs mainly in tropical and subtropical soils but has also been isolated from various marine and aquatic habitats. The species was first isolated in 1935 by Weill and L. Gaudin. Historically, A. unguis was assigned to the A. nidulans group, a common group of soil-borne fungi due to the
Aspergillus sulphureus (Fresen.) Thom & Church 1926
fungi species in the aspergillaceae family
Aspergillus sulphureus is a species of fungus belonging to the family Aspergillaceae.
Aspergillus ruber (Jos. König, Spieck. & W. Bremer) Thom & Church 1926
fungi species in the aspergillaceae family
Aspergillus ruber is a species of fungus in the genus Aspergillus. It is from the Aspergillus section. The species was first described in 1929. It has been isolated from coffee beans in the UK, tea and soil in China, and malt dust in the Czech Republic. It has been reported to produce auroglaucin, bisanthrons, catenarin, dihydroauroglaucin, echinulins, epiheveadrides, erythroglaucin, flavoglaucin, isoechinulins, neoechinulins, physcion, questin, questinol, tetracyclic, and tetrahydroauroglaucin.
Aspergillus granulosus Raper & Thom 1944
fungi species in the aspergillaceae family
Aspergillus granulosus is a species of fungus in the genus Aspergillus. It is from the Usti section. The species was first described in 1944. It has been reported to produce asperugins, ustic acids, nidulol, and drimans.
Aspergillus foetidus Thom & Raper 1945
fungi species in the aspergillaceae family
Aspergillus foetidus is a species of fungus in the genus Aspergillus.
Aspergillus caespitosus Raper & Thom 1944
fungi species in the aspergillaceae family
Aspergillus caespitosus is a species of fungus in the genus Aspergillus. It was described scientifically in 1944 by Kenneth B. Raper and Charles Thom, who isolated it from soil. It is from the Nidulantes section.
Penicillium rolfsii Thom 1930
fungi species in the aspergillaceae family
Penicillium rolfsii is a species of fungus in the genus Penicillium which produces patulin.
Penicillium cyaneum (Bainier & Sartory) Biourge ex Thom 1930
fungi species in the aspergillaceae family
Penicillium cyaneum is a species of the genus of Penicillium which was isolated from an oil-field. Penicillium cyaneum produces fatty acid, Brefeldin A and the antibiotic Cyanein
Penicillium atramentosum Thom 1910
fungi species in the aspergillaceae family
Penicillium atramentosum is a fungus species of the genus of Penicillium which produces tannase.
Aspergillus sparsus Raper & Thom 1944
fungi species in the aspergillaceae family
Aspergillus sparsus is a species of fungus in the genus Aspergillus. It is from the Sparsi section. The species was first described in 1944. It has been isolated from soil in Costa Rica and the United States.
Aspergillus amstelodami (L. Mangin) Thom & Church 1926
fungi species in the aspergillaceae family
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Aspergillus alliaceus Thom & Church 1945
fungi species in the aspergillaceae family
Aspergillus alliaceus is a species of fungus in the genus Aspergillus. It is from the Flavi section. It was first described scientifically by Charles Thom and Margaret Church in 1926. Its associated teleomorph is Petromyces alliaceus. It has yellow spores.
Aspergillus janus Raper & Thom 1944
fungi species in the aspergillaceae family
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Aspergillus carbonarius (Bainier) Thom 1916
fungi species in the aspergillaceae family
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Paecilomyces burci (Pollacci) Thom 1930
fungi species in the aspergillaceae family
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Aspergillus pulverulentus (McAlpine) Thom 1926
fungi species in the aspergillaceae family
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