Laetiporus

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Laetiporus
Laetiporus sulphureus JPG01.jpg
Laetiporus sulphureus in Belgium
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Polyporales
Family: Fomitopsidaceae
Genus: Laetiporus
Murr. (1904)
Type species
Laetiporus speciosus
Battarra ex Murrill (1904)

Laetiporus is a genus of edible mushrooms found throughout much of the world. Some species, especially Laetiporus sulphureus , are commonly known as sulphur shelf, chicken of the woods, the chicken mushroom, or the chicken fungus because it is often described as tasting like and having a texture similar to that of chicken meat.

Contents

Description

Laetiporus sp. from Anamalai Hills, Southern Western Ghats, India Chicken of the woods Fungus JEG7298 Jegan.JPG
Laetiporus sp. from Anamalai Hills, Southern Western Ghats, India

Individual "shelves" range from 5 to 25 centimetres (2 to 10 inches) across. These shelves are made up of many tiny tubular filaments (hyphae). The mushroom grows in large brackets; some have been found that weigh over 45 kilograms (100 pounds).

Young fruiting bodies are characterized by a moist, rubbery, sulphur-yellow to orange body sometimes with bright orange tips. Older brackets become pale and brittle almost chalk-like, mildly pungent, and are often dotted with beetle or slug/woodlouse holes.

The name "chicken of the woods" is not to be confused with another edible polypore, Maitake ( Grifola frondosa ) known as "hen of the woods/rams head” or with Lyophyllum decastes , known as the "fried chicken mushroom".

Taxonomy

Phylogeny

L. cincinnatus, Ohio Laetiporus cincinnatus 14060.jpg
L. cincinnatus , Ohio

Phylogenetic analyses of ITS, nuclear large subunit and mitochondrial small subunit rDNA sequences from a variety of North American species have delineated five distinct clades within the core Laetiporus clade: [1]

In addition, phylogenetic clades have been identified from Japan, Hawaii, South America, Europe, and South Africa. [2]

Species

Etymology

The name Laetiporus means "with bright pores". [5]

Distribution and habitat

The sulphur shelf mushroom is most commonly found on wounds of trees, mostly oak, though it is also frequently found on eucalyptus, yew, sweet chestnut, and willow, as well as conifers in some species. Laetiporus species are parasitic and produce brown rot in the host on which they grow.

It sometimes comes back year after year when the weather suits its sporulation preferences. From late spring to early autumn, the sulphur shelf thrives. This fungus causes a brown cubical rot and embrittlement which in later stages ends in the collapse of the host tree, as it can no longer flex and bend in the wind.[ citation needed ]

L. cincinnatus in Prospect Park, Brooklyn, New York in October 2012 Chicken of the Woods Laetiporus sulphureus.jpg
L. cincinnatus in Prospect Park, Brooklyn, New York in October 2012

Chicken of the woods is found growing on or at the base of dead or dying hardwood trees; most commonly on oak but also cherry or beech. It can also be found on dead conifer stumps. Chicken of the woods has been known to fruit on living trees as well. It typically grows from spring to early fall.

Uses

The mushroom can be prepared in most ways that one can prepare chicken meat. It can also be used as a substitute for chicken in a vegetarian diet. Additionally, it can be frozen for long periods of time and retain its edibility. In certain parts of Germany and North America, it is considered a delicacy.

L. sulphureus prepared dish Laetiporus sulphureus dish 2010 G1.jpg
L. sulphureus prepared dish

In some cases eating the mushroom "causes mild reactions ... for example, "swollen lips" or in rare cases "nausea, vomiting, dizziness and disorientation" to those who are sensitive. [6] This is believed to be due to a number of factors that include allergies to the mushroom's protein or toxins which are only somewhat stable at high temperatures. As such, many field guides[ which? ] request that those who eat Laetiporus exercise caution by only eating fresh, young brackets and begin with small quantities to see how well it sits in their stomach.

L. sulphureus has a potent ability to inhibit staph bacteria ( Staphylococcus aureus ), as well as moderate ability to inhibit the growth of Bacillus subtilis . [7]

See also

Related Research Articles

<span class="mw-page-title-main">Polyporales</span> Order of fungi

The Polyporales are an order of about 1800 species of fungi in the division Basidiomycota. The order includes some polypores as well as many corticioid fungi and a few agarics. Many species within the order are saprotrophic, most of them wood-rotters. Some genera, such as Ganoderma and Fomes, contain species that attack living tissues and then continue to degrade the wood of their dead hosts. Those of economic importance include several important pathogens of trees and a few species that cause damage by rotting structural timber. Some of the Polyporales are commercially cultivated and marketed for use as food items or in traditional Chinese medicine.

<span class="mw-page-title-main">Polypore</span> Group of fungi

Polypores are a group of fungi that form large fruiting bodies with pores or tubes on the underside. They are a morphological group of basidiomycetes-like gilled mushrooms and hydnoid fungi, and not all polypores are closely related to each other. Polypores are also called bracket fungi or shelf fungi, and they characteristically produce woody, shelf- or bracket-shaped or occasionally circular fruiting bodies that are called conks.

<span class="mw-page-title-main">Boletaceae</span> Family of fungi

The Boletaceae are a family of mushroom-forming fungi, primarily characterised by small pores on the spore-bearing hymenial surface, instead of gills as are found in most agarics. Nearly as widely distributed as the agarics, the family is renowned for hosting some prime edible species highly sought after by mushroom hunters worldwide, such as the cep or king bolete . A number of rare or threatened species are also present in the family, that have become the focus of increasing conservation concerns. As a whole, the typical members of the family are commonly known as boletes.

<span class="mw-page-title-main">Hymenochaetales</span> Order of fungi

The Hymenochaetales are an order of fungi in the class Agaricomycetes. The order in its current sense is based on molecular research and not on any unifying morphological characteristics. According to one 2008 estimate, the Hymenochaetales contain around 600 species worldwide, mostly corticioid fungi and poroid fungi, but also including several clavarioid fungi and agarics. Species of economic importance include wood decay fungi in the genera Phellinus and Inonotus sensu lato, some of which may cause losses in forestry. Therapeutic properties are claimed for Inonotus obliquus ("chaga") and Phellinus linteus, both of which are now commercially marketed.

<i>Laetiporus sulphureus</i> Species of fungus

Laetiporus sulphureus is a species of bracket fungus found in Europe and North America. Its common names are sulphur polypore, sulphur shelf, and chicken-of-the-woods. Its fruit bodies grow as striking golden-yellow shelf-like structures on tree trunks and branches. Old fruitbodies fade to pale beige or pale grey. The undersurface of the fruit body is made up of tubelike pores rather than gills.

<i>Fomitopsis pinicola</i> Stem decay fungus

Fomitopsis pinicola, is a stem decay fungus common on softwood and hardwood trees. Its conk is known as the red-belted conk. The species is common throughout temperate Europe and Asia. It is a decay fungus that serves as a small-scale disturbance agent in coastal rainforest ecosystems. It influences stand structure and succession in temperate rainforests. It performs essential nutrient cycling functions in forests. As well as a key producer of brown rot residues that are stable soil components in coniferous forest ecosystems. It has been reported that mushrooms have significant antioxidant activity.

<i>Meripilus giganteus</i> Species of fungus

Meripilus giganteus is a polypore fungus in the family Meripilaceae. It causes a white rot in various types of broadleaved trees, particularly beech (Fagus), but also Abies, Picea, Pinus, Quercus and Ulmus species. This bracket fungus, commonly known as the giant polypore or black-staining polypore, is often found in large clumps at the base of trees, although fruiting bodies are sometimes found some distance away from the trunk, parasitizing the roots. M. giganteus has a circumboreal distribution in the northern Hemisphere, and is widely distributed in Europe. In the field, it is recognizable by the large, multi-capped fruiting body, as well as its pore surface that quickly darkens black when bruised or injured.

<i>Fomitopsis</i> Genus of fungi

Fomitopsis is a genus of more than 40 species of bracket fungi in the family Fomitopsidaceae.

<i>Grifola frondosa</i> Species of fungus

Grifola frondosa is a polypore mushroom that grows at the base of trees, particularly old growth oaks or maples. It is typically found in late summer to early autumn. It is native to China, Europe, and North America.

Megasporoporia is a genus of four species of crust fungi in the family Polyporaceae. The genus is characterized by its large spores, and dextrinoid skeletal hyphae.

<i>Laetiporus persicinus</i> Species of fungus

Laetiporus persicinus, commonly known as the white chicken mushroom, is an edible mushroom of the genus Laetiporus. It is closely related to the chicken mushroom, or Laetiporus sulphureus. Laetiporus persicinus has a salmon pink cap and white pores. This mushroom grows on dead and living hardwood and softwood trees. It was first described scientifically by Miles Berkeley and Moses Ashley Curtis in 1853 as Polyporus persicinus. It has been collected in Africa, Australia, Asia, Europe, Greenland, Iceland, North America, and South America.

<i>Hapalopilus rutilans</i> Species of fungus

Hapalopilus rutilans is a species of polypore fungus in the family Polyporaceae. Officially described in 1821, it was transferred to its current genus Hapalopilus six decades later. It is commonly known as the tender nesting polypore, purple dye polypore, or the cinnamon bracket. This widely distributed species is found on five continents. It grows on the fallen or standing dead wood of deciduous trees, in which it fruits singly, in groups, fused, or in overlapping clusters. Fruit bodies are in the form of kidney-shaped to semicircular, cinnamon-orange-brown brackets. The underside of the fruit body features a yellowish to brownish pore surface with tiny angular pores, from which spores are released.

Laetiporus ailaoshanensis is a species of polypore fungus in the family Fomitopsidaceae. It is found in southwestern China, where it grows on Lithocarpus. The species was described as new to science in 2014 by Baokai Cui and Jie Song. Its fruit body has an orange-yellow to reddish-orange cap surface, with cream to buff pores on the cap underside. The fungus produces ovoid to ellipsoid basidiospores that measure 5.0–6.2 by 4.0–5.0 μm. Molecular analysis of internal transcribed spacer DNA sequences indicate that L. ailaoshanensis is a unique lineage in the genus Laetiporus.

<i>Laetiporus conifericola</i> Species of fungus

Laetiporus conifericola is a species of polypore fungus in the family Fomitopsidaceae. It is found in western North America ranging from California to Alaska, where it grows as a plant pathogen on conifer trees, particularly fir, spruce, and hemlock. Fruit bodies of the fungus comprise overlapping pore-bearing plates, measuring collectively up to 60 cm (24 in) across, and up to 4 cm (2 in) thick. Their color ranges from bright orange to salmon orange on the upper surface of the cap and stipe, with a yellow pore surface on the cap underside. Spores are egg-shaped, smooth, hyaline (translucent), and measure 6.5–8.0 by 4.0–5.0 μm. The species has a pleasant odour when fresh.

<i>Laetiporus cremeiporus</i> Species of fungus

Laetiporus cremeiporus is a species of polypore fungus in the family Fomitopsidaceae. It is found in cooler temperate areas of China and Japan, where it grows on logs and stumps of hardwood trees, especially oak. The fruit body of the fungus comprises large masses of overlapping reddish-orange caps with a cream-colored pore surface on the underside.

<i>Laetiporus gilbertsonii</i> Species of fungus

Laetiporus gilbertsonii is a species of polypore fungus in the family Fomitopsidaceae. It is found in western North America and South America. It was one of three new Laetiporus species published in 2001, which were distinguished genetically from the common Laetiporus sulphureus; the others were L. conifericola and L. huroniensis. The type collection, made in San Francisco's Golden Gate Park in 1997, was found fruiting on a eucalyptus tree. It has also been collected in Oregon and Washington. The fungus is named in honor of mycologist Robert Lee Gilbertson. L. gilbertsonii is edible, although some people have reported experiencing upset stomach after consuming it. Laetiporus conifericola is very similar in appearance, but is readily distinguished by its growth on conifers.

<i>Laetiporus huroniensis</i> Species of fungus

Laetiporus huroniensis is a species of polypore fungus in the family Fomitopsidaceae. It is found in the Great Lakes region of eastern North America, where it fruits on large logs in old growth conifer forests. The type collection, made in Ottawa National Forest in September 1999, was found fruiting on Tsuga canadensis. It was one of three new Laetiporus species published in 2001, which were distinguished genetically from the widespread Laetiporus sulphureus; the others were L. conifericola and L. gilbertsonii.

<i>Laetiporus montanus</i> Species of fungus

Laetiporus montanus is a species of polypore fungus in the family Fomitopsidaceae. It is found in mountainous areas of central Europe and in China, where it grows on conifers.

<i>Laetiporus portentosus</i> Species of fungus

Laetiporus portentosus is a species of polypore fungus in the family Fomitopsidaceae, found in South America, Australia, and in the North Island and northern South Island of New Zealand.

References

  1. Lindner, D.L.; Banik, M.T. (2008). "Molecular phylogeny of Laetiporus and other brown rot polypore genera in North America". Mycologia. 100 (3): 417–430. doi:10.3852/07-124R2. PMID   18751549. S2CID   25173644.
  2. Banik, Mark T.; Lindner, Daniel L.; Ota, Yuko; Hattori, Tsutomu (2010). "Relationships among North American and Japanese Laetiporus isolates inferred from molecular phylogenetics and single-spore incompatibility reactions". Mycologia. 102 (4): 911–917. doi:10.3852/09-044. PMID   20648757. S2CID   9711234.
  3. 1 2 Song, Jie; Chen, yuanyuan; Cui, Baokai (2014). "Morphological and molecular evidence for two new species of Laetiporus (Basidiomycota, Polyporales) from southwestern China". Mycologia. 106 (5): 1039–1050. doi:10.3852/13-402. PMID   24987130. S2CID   22823127.
  4. Pires, Ricardo Matheus; Motato-Vásquez, Viviana; de Mello Gugliotta, Adriana (2016). "A new species of Laetiporus (Basidiomycota) and occurrence of L. gilbertsonii Burds. in Brazil". Nova Hedwigia. 102 (3–4): 477–490. doi:10.1127/nova_hedwigia/2016/0320.
  5. Smith, Alexander H.; Smith Weber, Nancy (1980). The Mushroom Hunter's Field Guide. University of Michigan Press. p. 64. ISBN   978-0-472-85610-7.
  6. Michael W. Beug. "Poisonous and hallucinogenic mushrooms". Archived from the original on September 22, 2017. Retrieved Feb 21, 2013.
  7. Suay I, Arenal F, Asensio FJ, Basilio A, Cabello MA, Díez MT, García JB, del Val AG, Gorrochategui J, Hernández P, Peláez F, Vicente MF (Aug 2000). "Screening of basidiomycetes for antimicrobial activities". Antonie van Leeuwenhoek. 78 (2): 129–139. doi:10.1023/A:1026552024021. PMID   11204765. S2CID   23654559.