Penicillium solitum
species of fungus
Penicillium solitum is an anamorphic, mesophilic, salinity-tolerant, and psychrotolerant species of fungus in the genus Penicillium. It is known to produce various compounds including polygalacturonase, compactin, cyclopenin, cyclopenol, cyclopeptin, dehydrocompactin, dihydrocyclopeptin, palitantin, solistatin, solistatinol, viridicatin, viridicatol.
P. Solitum forms dark blueish-green colonies that measure 22–28 mm in diameter on Czaek yeast extract agar, while on malt extract agar, it appears brownish orange. This distinct orange-brown color sets P. solitum apart from other similar Penicillium species, making it useful for differentiation. The fungus has been historically isolated from various sources, including cheese rinds, cured meats, and the Antarctic environment. It was specifically isolated from air-dried lamb thighs on the Faore island. During the production of traditional Tyrolean smoked and cured ham, both Penicillium solitum and Eurotium rubrum are commonly found.
Furthermore, Penicillium solitum is known to be a pathogen of pomaceous fruit,P. solitum causes blue rot in pome fruits through its production of polygalacturonase, which breaks down the apple’s cell wall.
Domestication
Domestication in food associated fungi is often accompanied by changes in traits important for survival in natural environments. This includes reduced pigmentation, stress tolerance, and sporulation, while adding traits that are favorable for growth on human foods.
This brief starts where responsible research should: with the source description of “Penicillium solitum” as species of fungus. Everything that follows is an evidence route, not borrowed authority.
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The subject matters to the science & nature register because the source frames it as species of fungus. Its deeper value depends on whether names, dates, institutions and citations support that framing.
Stable identifiers, scientific names and standards terminology offer the best bridge between this overview and specialist evidence. The source revision retrieved here is dated May 5, 2026. The linked authority identifier is Q15020954. None of the 0 selected statements returned an explicit reference.
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This entry incorporates text from “Penicillium solitum” on English Wikipedia. Contributors are listed in the page history. Text is available under the Creative Commons Attribution-ShareAlike 4.0 License. Selected authority identifiers and statements are retrieved from Wikidata under CC0; their references and qualifiers remain part of the verification path.