Naematelia

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Naematelia
Tremella encephala Pers 221261 2008-10-18.jpg
Gelatinous fruit body of Naematelia encephala with its host Stereum sanguinolentum
Scientific classification OOjs UI icon edit-ltr.svg
Domain: Eukaryota
Kingdom: Fungi
Division: Basidiomycota
Class: Tremellomycetes
Order: Tremellales
Family: Naemateliaceae
Genus: Naematelia
Fr.
Type species
Naematelia encephala
Synonyms

Naematelia is a genus of fungi in the family Naemateliaceae. All Naematelia species are parasites of other fungi ( Stereum species) and produce anamorphic yeast states. When produced, basidiocarps (fruit bodies), are gelatinous and are colloquially classed among the "jelly fungi." Four species of Naematelia are currently recognized worldwide. One species, Naematelia aurantialba , is commercially cultivated for food.

Contents

Taxonomy

History

Naematelia was introduced in 1816 by Elias Magnus Fries for fungal fruit bodies with a gelatinous outer layer and a hard inner core, as in the type species Naematelia encephala . Some mycologists subsequently used the name, while others considered Naematelia synonymous with Tremella since its basidia were Tremella-like. [1] In a 1961 paper, American mycologist Robert Bandoni showed that the hard inner core of Naematelia encephala was composed largely of host tissue ( Stereum sanguinolentum ) and that Naematelia, therefore, represented no more than a Tremella species and its host. [1]

However, molecular research, based on cladistic analysis of DNA sequences, has shown that Tremella is polyphyletic (and hence artificial). [2] [3] [4] [5]

Therefore, a different generic name was required for a group of species not closely related to Tremella mesenterica (the type species of Tremella), and in 2015 Naematelia was selected as the earliest such name available. Comparatively few species, however, have yet to be sequenced. [6]

Description

Fruit bodies are gelatinous (but may have a hard inner core mainly composed of host hyphae) and are variously cephaliform (like a brain, with folds and ridges), lobed, or foliose (with leaf-like or seaweed-like fronds). Colors are typically pinkish, ochraceous, yellow, or brown.

Microscopic characters

Naematelia species produce clamped hyphae and have haustorial cells from which hyphal filaments seek out and penetrate the hyphae of the host. The basidia are "tremelloid" (globose to ellipsoid, sometimes stalked, and vertically or diagonally septate), giving rise to long, sinuous sterigmata or epibasidia on which the basidiospores are produced. These spores are smooth, globose to ellipsoid, and germinate by hyphal tube or yeast cells. Conidiophores are often present, producing conidiospores that are similar to yeast cells. [2] [7]

Habitat and distribution

Species are parasitic on fruit bodies of Stereum species that grow on dead attached or fallen wood. Hosts include Stereum hirsutum on broadleaf trees and Stereum sanguinolentum on conifers.

As a group, Naematelia species occur worldwide, though individual species may have a more restricted distribution.

Species and hosts

ImageNameDistributionHost
Tremella aurantia Stereum hirsutum 4342408020 bdbeb3eaa8 o.jpg Naematelia aurantia Asia, Australasia, Europe, North & South America Stereum hirsutum [8]
Naematelia aurantialba China Stereum hirsutum [9]
2008-02-29 Tremella encephala Stereum sanguinolentum.jpg Naematelia encephala Asia, Australasia, Europe, North America Stereum sanguinolentum [10]
Naematelia microsporaSouth Africa Stereum species

Related Research Articles

<i>Tremella mesenterica</i> Species of jelly fungus

Tremella mesenterica is a common jelly fungus in the family Tremellaceae of the Agaricomycotina. The gelatinous, orange-yellow fruit body of the fungus, which can grow up to 7.5 cm (3 in) diameter, has a convoluted or lobed surface that is greasy or slimy when damp.

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

The Tremellaceae are a family of fungi in the order Tremellales. The family is cosmopolitan and contains both teleomorphic and anamorphic species, most of the latter being yeasts. All teleomorphs in the Tremellaceae are parasites of other fungi, though the yeast states are widespread and not restricted to hosts. Basidiocarps, when produced, are gelatinous.

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

The Tremellales are an order of fungi in the class Tremellomycetes. The order contains both teleomorphic and anamorphic species, most of the latter being yeasts. All teleomorphic species in the Tremellales are parasites of other fungi, though the yeast states are widespread and not restricted to hosts. Basidiocarps, when produced, are gelatinous.

<i>Tremella</i> Genus of fungi

Tremella is a genus of fungi in the family Tremellaceae. All Tremella species are parasites of other fungi and most produce anamorphic yeast states. Basidiocarps, when produced, are gelatinous and are colloquially classed among the "jelly fungi". Over 100 species of Tremella are currently recognized worldwide. One species, Tremella fuciformis, is commercially cultivated for food.

<i>Phaeotremella</i> Genus of fungi

Phaeotremella is a genus of fungi in the family Phaeotremellaceae. All Phaeotremella species are parasites of other fungi and produce anamorphic yeast states. Basidiocarps, when produced, are gelatinous and are colloquially classed among the "jelly fungi". Fifteen or so species of Phaeotremella are currently recognized worldwide. Tremella sanguinea, shown to be a Phaeotremella species by DNA sequencing, is cultivated in China as an ingredient in traditional Chinese medicine.

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

Phaeotremella frondosa is a species of fungus in the family Phaeotremellaceae producing brownish, frondose, gelatinous basidiocarps. It is widespread in north temperate regions, and is parasitic on other species of fungi that grow on dead attached and recently fallen branches of broadleaf trees.

<i>Phaeotremella foliacea</i> Species of fungus

Phaeotremella foliacea is a species of fungus in the family Phaeotremellaceae. It produces brownish, frondose, gelatinous basidiocarps and is parasitic on the mycelium of Stereum sanguinolentum, a fungus that grows on dead attached and recently fallen branches of conifers. It is widespread in north temperate regions. In the UK it has the recommended English name leafy brain and has also been called jelly leaf and brown witch's butter. Prior to 2017, the name Tremella foliacea was also applied to similar-looking species on broadleaf trees, now distinguished as Phaeotremella frondosa and Phaeotremella fimbriata.

<i>Naematelia aurantia</i> Species of yellow, parasitic fungus

Naematelia aurantia is a species of fungus producing yellow, frondose, gelatinous basidiocarps. It is widespread in north temperate regions and is parasitic on another species of fungus that grows on dead attached and recently fallen branches of broadleaf trees. It is commonly called golden ear in North America.

<i>Naematelia encephala</i> Species of fungus

Naematelia encephala is a species of fungus producing pink, brain-like, gelatinous basidiocarps. It is widespread in north temperate regions and is parasitic on another species of fungus that grows on dead attached and recently fallen branches of conifers. In the UK, its recommended English name is conifer brain.

Pseudotremella is a genus of fungi in the family Bulleraceae. All Pseudotremella species are parasites of other fungi and produce anamorphic yeast states. Basidiocarps, when produced, are gelatinous and are colloquially classed among the "jelly fungi". Four species of Pseudotremella are currently recognized worldwide. Two of these species are, as yet, only known from their yeast states.

<i>Cystobasidium fimetarium</i> Species of fungus

Cystobasidium fimetarium is a species of fungus in the order Cystobasidiales. It is a fungal parasite forming small gelatinous basidiocarps on various ascomycetous fungi on dung. Microscopically, it has auricularioid basidia producing basidiospores that germinate by budding off yeast cells. The species is known from Europe and North America.

<i>Sirobasidium</i> Genus of fungi

Sirobasidium is a genus of fungi in the order Tremellales. Basidiocarps are gelatinous and appear to be parasitic on ascomycetous fungi on wood. Microscopically they are distinguished by producing septate basidia in chains which give rise to deciduous sterigmata. Species are distributed worldwide.

Phaeotremella fimbriata is a species of fungus in the family Phaeotremellaceae. It produces blackish, frondose, gelatinous basidiocarps and is parasitic on the mycelium of Stereum rugosum, a fungus that grows on dead attached and recently fallen branches of broad-leaved trees. It is widespread in northern Europe. Prior to 2017, the species was generally considered a synonym of Tremella foliacea, but this latter species is restricted to conifers. Phaeotremella frondosa is a similar-looking but paler, brown species on broad-leaved trees and occurs in North America as well as Europe.

Tremella brasiliensis is a species of fungus in the family Tremellaceae. It produces yellow, lobed to firmly foliaceous, gelatinous basidiocarps and is parasitic on other fungi on dead branches of broad-leaved trees. It was originally described from Brazil.

Tremella roseolutescens is a species of fungus in the family Tremellaceae. It produces rose-pink to salmon, pustular, gelatinous basidiocarps and is parasitic on other fungi on dead attached branches of broad-leaved trees. It was originally described from Costa Rica.

Tremella salmonea is a species of fungus in the family Tremellaceae. It produces pale orange to salmon, foliose, gelatinous basidiocarps and is parasitic on other fungi on wood of broad-leaved trees. It was originally described from China.

Tremella armeniaca is a species of fungus in the family Tremellaceae. It produces orange to apricot, lobed, gelatinous basidiocarps and is parasitic on other fungi on dead branches of broad-leaved trees. It was originally described from Costa Rica.

Tremella exigua is a species of fungus in the family Tremellaceae. It produces small, dark, pustular, gelatinous basidiocarps and is parasitic on pyrenomycetous fungi on dead branches of trees and shrubs. It was originally described from France.

Tremella mesenterella is a species of fungus in the family Tremellaceae. It produces yellowish to reddish brown, foliose, gelatinous basidiocarps and is parasitic on corticioid fungi on dead branches of broadleaf trees and shrubs. It was originally described from Canada.

Tremella tremelloides is a species of fungus in the order Tremellales. It produces yellowish, brain-like to densely lobed, gelatinous basidiocarps and is parasitic on Stereum basidiocarps on dead branches of broadleaved trees. It was originally described from the USA.

References

  1. 1 2 Bandoni RJ. (1961). "The genus Naematelia". American Midland Naturalist. 66 (2): 319–328. doi:10.2307/2423032. JSTOR   2423032.
  2. 1 2 Chen C-J. (1998). Morphological and molecular studies in the genus Tremella. Berlin: J. Cramer. p. 225. ISBN   978-3-443-59076-5.
  3. ↑ Fell JW, Boekhout T, Fonseca A, Scorzetti G, Statzell-Tallman A (2000). "Biodiversity and systematics of basidiomycetous yeasts as determined by large-subunit rDNA D1/D2 domain sequence analysis" (PDF). International Journal of Systematic and Evolutionary Microbiology. 50 (3): 1351–1371. doi: 10.1099/00207713-50-3-1351 . PMID   10843082 . Retrieved 2010-04-21.
  4. ↑ Sampaio JP, Weiss M, Gadanho M, Bauer R (2002). "New taxa in the Tremellales: Bulleribasidium oberjochense gen. et sp. nov., Papiliotrema bandonii gen. et sp. nov. and Fibulobasidium murrhardtense sp. nov". Mycologia. 94 (5): 873–887. doi:10.2307/3761703. JSTOR   3761703. PMID   21156562.
  5. ↑ Findley K, Rodriguez-Carres M, Metin B, Kroiss J, Fonseca A, Vilgalys R, Heitman J (2009). "Phylogeny and Phenotypic Characterization of Pathogenic Cryptococcus Species and Closely Related Saprobic Taxa in the Tremellales" (PDF). Eukaryotic Cell. 8 (3): 353–361. doi:10.1128/EC.00373-08. PMC   2653247 . PMID   19151324.
  6. ↑ Liu XZ, Wang QM, Göker M, Groenewald M, Kachalkin AV, Lumbsch HT, Millanes AM, Wedin M, Yurkov AM, Boekhout T, Bai FY (2015). "Towards an integrated phylogenetic classification of the Tremellomycetes". Studies in Mycology. 81: 85–147. doi:10.1016/j.simyco.2015.12.001. PMC   4777781 . PMID   26955199. S2CID   21998745.
  7. ↑ Zugmaier W, Bauer R, Oberwinkler F (1994). "Mycoparasitism of some Tremella species". Mycologia. 86 (1): 49–56. doi:10.2307/3760718. JSTOR   3760718.
  8. ↑ Roberts P. (1995). "British Tremella species I: Tremella aurantia and T. mesenterica". Mycologist. 9 (3): 110–114. doi:10.1016/S0269-915X(09)80270-X.
  9. ↑ Bandoni RJ, Zang M (1990). "On an undescribed Tremella from China". Mycologia. 82 (2): 270–273. doi:10.2307/3759859. JSTOR   3759859.
  10. ↑ Roberts P. (1999). "British Tremella species II: T. encephala, T. steidleri & T. foliacea". Mycologist. 13 (3): 127–131. doi:10.1016/S0269-915X(99)80044-5.
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