pleurotus
{{Short description|Genus of fungi}}
{{Automatic taxobox
| image = Oyster mushoom fells.jpg
| image_caption = Pleurotus ostreatus
| taxon = Pleurotus
| authority = (Fr.) P. Kumm. 1871
| type_species = Pleurotus ostreatus
| type_species_authority = (Jacq.) P. Kumm. 1871
}}
{{Mycomorphbox
| name = Pleurotus
| hymeniumType = gills
| capShape =
| whichGills =
| stipeCharacter =
| sporePrintColor =
| ecologicalType = saprotrophic
| ecologicalType2 = parasitic
| howEdible = edible
| howEdible2 = choice
}}
Pleurotus is a genus of gilled mushrooms which includes one of the most widely eaten mushrooms, P. ostreatus. Species of Pleurotus may be called oyster, abalone, or tree mushrooms, and are some of the most commonly cultivated edible mushrooms in the world. Pleurotus fungi have also been used in mycoremediation of pollutants, such as petroleum and polycyclic aromatic hydrocarbons.
Description
The caps may be laterally attached (with no stipe). If there is a stipe, it is normally eccentric and the gills are decurrent along it. The term pleurotoid is used for any mushroom with this general shape.
The spores are smooth and elongated (described as "cylindrical"). Where hyphae meet, they are joined by clamp connections. Pleurotus is not considered to be a bracket fungus, and most of the species are monomitic (with a soft consistency). However, remarkably, P. dryinus can sometimes be dimitic, meaning that it has additional skeletal hyphae, which give it a tougher consistency like bracket fungi.
In the American Pacific Northwest, oysters can be found from March to May.{{Cite web |title=Seasonal Chart for Edible Mushrooms |url=https://www.centraloregonmushroomclub.com/Mushroom-Seasons.htm?m=102&s=866 |access-date=2024-03-31 |website=Central Oregon Mushroom Club}}
Taxonomy
File:Pleurotus pulmonarius LC0228.jpg]]
The classification of species within the genus Pleurotus is difficult due to high phenotypic variability across wide geographic ranges, geographic overlap of species, and ongoing evolution and speciation. Early taxonomic efforts placed the oyster mushrooms within a very broad Agaricus as Agaricus ostreatus (Jacq. 1774). Paul Kummer defined the genus Pleurotus in 1871; since then, the genus has been narrowed with some species reclassified to other genera, such as Favolaschia, Hohenbuehelia, Lentinus, Marasmiellus, Omphalotus, Panellus, Pleurocybella, and Resupinatus. See Singer (1986) for an example of Pleurotus taxonomy based on morphological characteristics.
= Phylogeny =
More recently, molecular phylogenetics has been utilized to determine genetic and evolutionary relationships between groups within the genus, delineating discrete clades. Pleurotus, along with the closely related genus Hohenbuehelia, has been shown to be monophyletic. Tests of cross-breeding viability between groups have been used to further define which groups are deserving of species rank, as opposed to subspecies, variety, or synonymy. If two groups of morphologically distinct Pleurotus fungi are able to cross-breed and produce fertile offspring, they meet one definition of species. These reproductively discrete groups, referred to as intersterility groups, have begun to be defined in Pleurotus. Many binomial names used in literature are now being grouped together as species complexes using this technique, and may change.
== Phylogenetic species ==
The following species list is organized according to 1. phylogenetic clade, 2. intersterility group (group number in Roman numerals) or sub-clade, and then 3. any older binomial names that have been found to be closely related, reproductively compatible, or synonymous, although they may no longer be taxonomically valid. This list is likely to be incomplete.
File:Pleurotus populinus 13996.jpg, USA]]
File:Pleurotusjf.JPG, Philippines]]
- P. ostreatus clade
- I. P. ostreatus (oyster or pearl oyster mushroom) – North America and northern Eurasia
- P. florida
- II. P. pulmonarius (phoenix or Indian oyster mushroom) – North America, Eurasia, and Australasia
- P. columbinus
- P. sapidus
- III. P. populinus – North America
- VI. P. eryngii (king oyster mushroom) – Europe and the Middle East
- P. ferulae
- P. fossulatus – Afghanistan
- P. nebrodensis
- XII. P. abieticola – Asia
- XIII. P. albidus – Caribbean, Central America, South America
- P. djamor-cornucopiae clade File:Spanish-mushrooms.jpg]]
- IV. P. cornucopiae (branched oyster mushroom) – Europe
- P. citrinopileatus (golden oyster mushroom) – eastern Asia
- P. euosmus (tarragon oyster mushroom)
- V. P. djamor (pink oyster mushroom) – pantropical
- P. flabellatus
- P. salmoneo-stramineus
- P. salmonicolor
- XI. P. opuntiae – North America, New Zealand
- XVI. P. calyptratus
- P. cystidiosus clade File:Limonenseitlinge (Pleurotus citrinopileatus) - 20100828.jpgFile:Home-grown oyster mushroom .jpg
- VII. P. cystidiosus (abalone mushroom) – global
- P. abalonus – Taiwan
- P. fuscosquamulosus – Africa, Europe
- P. smithii – Mexico
- IX. P. dryinus – North America, Europe, and New Zealand
- VIII. Lentinus levis – subtropical to tropical, moved to genus Lentinus.
- X. P. tuber-regium (king tuber mushroom) – Africa, Asia, Australasia
- XIV. P. australis (brown oyster mushroom) – Australia and New Zealand
- XV. P. purpureo-olivaceus – Australia and New Zealand
- P. rattenburyi
== ''[[Incertae sedis]]'' species ==
== Former species ==
- P. gardneri was reclassified to the genus Neonothopanus in 2011.
- P. levis was reclassified to the genus Lentinus.
- P. sajor-caju was reclassified to the genus Lentinus.
- P. nidiformis was reclassified to the genus Omphalotus in 1994.
= Etymology =
The genus name Pleurotus refers to the mushroom caps being laterally attached to the substrate. It is derived of the Ancient Greek word {{linktext|πλευρόν}}: pleurón rib, side.Fries, E. M. (1821) Systema Mycologicum I, p. 178 [https://www.biodiversitylibrary.org/page/4338262 Link to the original text at biodiversitylibrary.org]
Ecology
Pleurotus fungi are found in both tropical and temperate climates throughout the world. Most species of Pleurotus are white-rot fungi on hardwood trees, although some also decay conifer wood. Pleurotus eryngii is unusual in being a weak parasite of herbaceous plants, and P. tuber-regium produces underground sclerotia.
In addition to being saprotrophic, all species of Pleurotus are also nematophagous, catching nematodes by paralyzing them with a toxin. In the case of the carnivorous mushroom Pleurotus ostreatus, it was shown that small, fragile lollipop-shaped structures (toxocysts) on fungal hyphae contain a volatile ketone, 3-octanone, which disrupts the cell membrane integrity of nematodes, leading to rapid cell and organismal death, hypothetically either to defend themselves and/or to acquire nutrients.
Uses
= Culinary =
Oyster mushrooms are popular for cooking, torn up or sliced, especially in stir fry or sauté, because they are consistently thin, and so will cook more evenly than uncut mushrooms of other types.{{cite book | chapter-url = http://www.mssf.org/cookbook/oyster.html | chapter = Oyster Mushroom | first = Louise | last = Freedman | title = Wild About Mushrooms: The Cookbook of the Mycological Society of San Francisco | publisher = Addison-Wesley | date = 1987 | isbn = 9780943186306 | access-date = 29 February 2020}} They are often used in vegetarian cuisine.{{Cite web|url=http://lengskitchen.blogspot.my/2012/10/deep-fried-oyster-mushroom.html|title=Deep Fried Oyster Mushroom | date = October 31, 2012 |website=Kitchen Chaos |access-date=July 14, 2016}}
The crew of the Fram2 orbital mission are planning to grow Oyster mushrooms in space for the first time. The code name for this experiment is Mission MushVroom, and is led by FOODiQ Global, an Australian company. If successful, these mushrooms could provide a sustainable food source during lengthy space missions.{{cite news
| title=SpaceX's Fram2 astronaut flight over Earth's poles will be the 1st to grow mushrooms in space
| first=Samantha | last=Mathewson | date=March 29, 2025
| website=SPACE.com
| url=https://www.space.com/space-exploration/missions/spacexs-fram2-astronaut-flight-over-earths-poles-will-be-first-to-grow-mushrooms-in-space
| access-date=2025-03-31 }}
= Bioremediation =
{{see also|Bioremediation of oil spills}}
{{see also|Mycoremediation}}
The 2007 Cosco Busan oil spill was remediated partly by using 1000 mats of human hair collected from Bay Area salons woven into mats, then used to grow oyster mushrooms, helping to absorb the oil.{{cite news |author1=May M |title=Hair and mushrooms create a recipe for cleaning up oily beaches |url=https://www.sfgate.com/bayarea/article/hair-and-mushrooms-create-a-recipe-for-cleaning-3301177.php |access-date=8 March 2024 |work=SFGate |date=14 November 2007}}
After the 2017 Tubbs Fire in California, oyster mushrooms were grown to help remediate toxic ash run-off.{{cite web |author1=Burlison D |title=Bioremediation Efforts Mushroom in the Aftermath of California's North Bay Fires |url=https://www.earthisland.org/journal/index.php/articles/entry/bioremediation_mushroom_aftermath_californias_north_bay_fires/ |publisher=Earth Island Journal |access-date=8 March 2024 |date=30 April 2018}}
See also
- Antromycopsis – an anamorphic form of Pleurotus
- List of Pleurotus species
References
{{Reflist|2|refs=
{{cite journal| title=Ancient and recent patterns of geographic speciation in the oyster mushroom Pleurotus revealed by phylogenetic analysis of ribosomal DNA sequences| last1=Vilgalys| first1=Rytas| first2=Bao Lin| last2=Sun| journal=PNAS|date=May 1994| volume=91| issue=10| pages=4599–4603| pmc=43833 | doi = 10.1073/pnas.91.10.4599 | pmid=8183955| bibcode=1994PNAS...91.4599V| doi-access=free}}
{{cite book |author=Paul Stamets |year=2005 |title=Mycelium Running |publisher=Ten Speed Press |place=Berkeley, California |oclc=262557556 |isbn=978-1-58008-579-3 |url-access=registration |url=https://archive.org/details/myceliumrunningh00stam_0 |author-link=Paul Stamets }}
}}
External links
{{Commons category|Pleurotus}}
{{Wikispecies|Pleurotus}}
- [http://www.mushroomthejournal.com/greatlakesdata/Taxa/PleurGenus127.html Pleurotus Genus] on the Mushroom, the Journal of Wild Mushrooming site
- [http://www.mushroomexpert.com/pleurotoid.html Oysters: Pleurotoid Mushrooms] at MushroomExpert.com
- {{cite web |title=Pleurotus (Fr.) P.Kumm. |work=Atlas of Living Australia |url=https://bie.ala.org.au/species/urn:lsid:indexfungorum.org:names:18308}}
{{Taxonbar|from=Q852065}}
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