Pleurotus citrinopileatus

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Pleurotus citrinopileatus
Pleurotus citrinopileatus at Chatama's home.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Agaricales
Family: Pleurotaceae
Genus: Pleurotus
Species:
P. citrinopileatus
Binomial name
Pleurotus citrinopileatus
Singer (1943) [1]
Synonyms
  • Pleurotus cornucopiae subsp. citrinopileatus(Singer) O.Hilber (1993)
  • Pleurotus cornucopiae var. citrinopileatus(Singer) Ohira (1987)
Pleurotus citrinopileatus
Information icon.svg
Gills icon.png Gills on hymenium
Flat cap icon.svgDepressed cap icon.svg Cap is flat or depressed
Decurrent gills icon2.svg Hymenium is decurrent
Bare stipe icon.svg Stipe is bare
Transparent spore print icon.svg
Spore print is pink
Saprotrophic fungus.svgEcology is saprotrophic
Mycomorphbox Choice.pngEdibility is choice

Pleurotus citrinopileatus, the golden oyster mushroom (tamogitake in Japanese), is an edible gilled fungus. Native to eastern Russia, northern China, and Japan, the golden oyster mushroom is very closely related to P. cornucopiae of Europe, with some authors considering them to be at the rank of subspecies. [2] In far eastern Russia, P. citrinopileatus, they are called iI'mak, is one of the most popular wild edible mushrooms. [3]

Contents

Description

The fruiting bodies of P. citrinopileatus grow in clusters of bright yellow to golden brown caps with a velvety, dry surface texture. Caps range from 20–65 millimetres (342+12 inches) in diameter. The flesh is thin and white, with a mild taste and without a strong smell. Stems are cylindrical, white in color, often curved or bent, and about 20–50 mm (34–2 in) long and 2–8 mm (116516 in) in diameter. The gills are white, closely spaced, and run down the stem. The spores of the golden oyster mushroom are cylindrical or elliptical in shape, smooth, hyaline, amyloid, and measure 6-9 by 2–3.5 micrometres. [2] [3]

Ecology

The golden oyster mushroom, like other species of oyster mushroom, is a wood-decay fungus. In the wild, P. citrinopileatus most commonly decays hardwoods such as elm. [2] [3] The first recorded observation of naturalized golden oysters in the United States occurred in 2012 on Mushroom Observer, perhaps a decade after the cultivation of the species began in North America, and they have been found growing on oak, elm, beech, and other hardwoods. Naturalized golden oysters have been found in many states including: Delaware, Illinois, Iowa, Maryland, Massachusetts, Michigan, Minnesota, New York, Ohio, Pennsylvania, and Wisconsin. Their vigorous range expansion is comparable to invasive species. In a 2018 population genomics study comparing naturalized wild isolates with commercial strains, two of the commercial isolates showed high similarity to all of the wild isolates, representing possible source strains of the wild populations. [4] The study also found highly similar wild isolates collected from geographically distant locations, in some cases over 800 miles (1,300 km) apart. This is strong evidence to suggest that the same cultivated strain has been re-introduced many times over in various parts of the United States, as opposed to a single introduction event and subsequent spread.

The golden oyster mushroom is also naturalized in several African countries: Cameroon, [5] Tanzania, [6] Kenya, [7] Burundi, [8] and Nigeria. [9] It also occurs in the wild in some Asian countries outside its native territory: in the Yemen, [10] , Korea, [11] and India. [12]

Uses

Golden oyster mushrooms are cultivated commercially, usually on a medium of grain, straw, or sawdust. [13] Pleurotus species are some of the most commonly cultivated mushrooms, particularly in China, due to their ease of cultivation and their ability to convert 100 g of organic refuse into 50-70 g of fresh mushrooms. [14]

Chemistry

Pleurotus citrinopileatus mushrooms are a source of antioxidants. [15] Extracts from P. citrinopileatus have been studied for their antihyperglycemic properties, decreasing blood sugar levels in diabetic rats. [16] They have also been studied as a source of lipid-lowering drugs; [17] P. ostreatus , a related oyster mushroom, has been found to contain the cholesterol-lowering drug lovastatin. [18]

In one study, among 11 other commonly cultivated or foraged mushroom species, Pleurotus citrinopileatus contained the second highest amount of the antioxidant and amino acid ergothioneine at 3.94mg per gram of dry weight, and fourth highest in glutathione at 1.39mg per gram of dry weight. Both compounds had their highest concentrations in the pileus tissue. It had the highest amount of ergothioneine among the other saprotrophs within the group. [19]

See also

Related Research Articles

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<i>Omphalotus nidiformis</i> Species of bioluminescent fungus in the family Marasmiaceae

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<i>Pleurotus pulmonarius</i> Species of mushroom

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<i>Hericium</i> Genus of fungi

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<i>Pleurotus nebrodensis</i> Species of fungus

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Silvia N. Blumenfeld is an expert on mycology. From 1986 to 2004, she was a Professor of Mycology and Biotechnology of Filamentous Fungi at the National University of Comahue, in Río Negro, Argentina. She emigrated to Israel in 2002, where she became the curator of the Tel Aviv University fungi collection, specializing in medicinal mushrooms. She has over 50 articles, books, and patents to her name, and has received academic honours. In 1995, she was awarded the Argentine National 'José Antonio Balseiro' Prize for her work.

<i>Pleurotus tuber-regium</i>

Pleurotus tuber-regium, the king tuber mushroom, is an edible gilled fungus native to the tropics, including Africa, Asia, and Australasia. It has been shown to be a distinct species incapable of cross-breeding and phylogenetically removed from other species of Pleurotus.

<i>Omphalotus japonicus</i> Species of fungus

Omphalotus japonicus, commonly known as the tsukiyotake(月夜茸), is an orange to brown-colored gilled mushroom native to Japan and Eastern Asia. It is a member of the cosmopolitan genus Omphalotus, the members of which have bioluminescent fruit bodies which glow in darkness. A 2004 molecular study shows it to be most closely related to a clade composed of Omphalotus nidiformis of Australia, Omphalotus olivascens of Western North America and Omphalotus olearius of Europe.

<i>Pleurotus cornucopiae</i> Species of fungus

Pleurotus cornucopiae is a species of edible fungus in the genus Pleurotus, It is quite similar to the better-known Pleurotus ostreatus, and like that species is cultivated and sold in markets in Europe and China, but it is distinguished because its gills are very decurrent, forming a network on the stem.

<i>Hypsizygus ulmarius</i> Species of mushroom-forming fungus

Hypsizygus ulmarius, also known as the elm oyster mushroom, and less commonly as the elm leech, elm Pleurotus, is an edible fungus. It has often been confused with oyster mushrooms in the Pleurotus genus but can be differentiated easily as the gills are either not decurrent or not deeply decurrent. While not quite as common as true oyster mushrooms, they have a wide range globally in temperate forests. The mushrooms and vegetative hyphae of this species have been studied in recent years for their potential benefits to human health, and mycoremediation.

<i>Pleurotus cystidiosus</i> Species of fungus

Pleurotus cystidiosus, also known as abalone mushroom and maple oyster mushroom, is an edible species of fungus in the family Pleurotaceae, described as new to science by mycologist Orson K. Miller Jr. in 1969. It can be cultivated, with spores and growing kits being available commercially. Antromycopsis macrocarpa is the anamorphic form of this species.

References

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  2. 1 2 3 Ohira, Ikuo (1990). "A revision of the taxonomic status of Pleurotus citrinopileatus". Reports of the Tottori Mycological Institute. 28: 143–150.
  3. 1 2 3 Parmasto, Erast (July 1987). "Pleurotus citrinopileatus, one of the favourites". Mycologist . 1 (3): 106–107. doi:10.1016/S0269-915X(87)80076-9.
  4. Bruce, Andrea L. (2018). Population genomic insights into the establishment of non-native golden oyster mushrooms (Pleurotus citrinopileatus) in the United States (Thesis). University of Wisconsin, La Crosse.
  5. Tsigain, F. T. et al. (2022). Enzymatic Activities, Characteristics of Wood-Decay and Wood Substrate Specificity within Genera of Some Wood-Rotting Basidiomycetes from Cameroon and Tropical Africa. European Journal of Biology and Biotechnology, 3(1), 11-23.
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