Tremella

Genus of fungi From Wikipedia, the free encyclopedia

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 (fruit bodies), when produced, are gelatinous and are colloquially classed among the "jelly fungi". Over 100 species of Tremella (in its wide sense) are currently recognized worldwide. One species, Tremella fuciformis, is commercially cultivated for food.

Division:Basidiomycota
Class:Tremellomycetes
Order:Tremellales
Family:Tremellaceae
Quick facts Scientific classification, Type species ...
Tremella
Gelatinous fruit body of Tremella mesenterica
Scientific classification Edit this classification
Kingdom: Fungi
Division: Basidiomycota
Class: Tremellomycetes
Order: Tremellales
Family: Tremellaceae
Genus: Tremella
Pers. (1801)
Type species
Tremella mesenterica
Synonyms

Epidochium Fr.
Gyraria Nees
Nakaiomyces Kobayasi

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Taxonomy

History

Tremella was one of the original genera created by Linnaeus in his Species Plantarum of 1753. The name comes from the Latin tremere meaning "to tremble".[1] Linnaeus placed Tremella in the algae, including within it a variety of gelatinous growths, including seaweeds, cyanobacteria, and myxomycetes, as well as fungi. Subsequent authors added additional species to this mix, until Persoon revised Tremella in 1794 and 1801, repositioning the genus within the fungi.[2]

Persoon's reinterpretation of Tremella was sufficiently radical to be considered a separate genus (Tremella Pers.) from that originally created by Linnaeus (Tremella L.).[2] Tremella Pers. has now been conserved under the International Code of Nomenclature for algae, fungi, and plants, with Tremella mesenterica as the type species.[3]

Current status

Molecular research, based on cladistic analysis of DNA sequences, has shown that Tremella (as previously understood) is polyphyletic (and hence artificial), with most species not closely related to the type.[4][5][6][7] Accordingly, some species have been transferred to new genera and new families: Tremella foliacea and related species are now placed in the genus Phaeotremella within the family Phaeotremellaceae; Tremella encephala and related species are now placed in the genus Naematelia within the Naemateliaceae; Tremella moriformis and related species are now placed in the genus Pseudotremella within the Bulleraceae; and Tremella polyporina is now placed in the genus Carcinomyces within the Carcinomycetaceae.[8] Several other species groups have not yet been renamed, pending further research.[8]

More than 500 species have been described in Tremella, but most of these are old names either of doubtful application or for species later transferred to other genera. In its strict sense the genus Tremella now contains some 30-40 species, including the type Tremella mesenterica and the cultivated species T. fuciformis.[9]

Description

Fruit bodies, when present, are gelatinous. In some species they are small (under 5 mm across) and pustular to pulvinate (cushion-shaped). In others they are much larger (up to 150 mm across) and may be variously lobed, cephaliform (like a brain, with folds and ridges), or foliose (with leaf-like or seaweed-like fronds). Many Tremella species, however, are hymenial parasites, producing spores within the fruit bodies of their hosts, and are only visible microscopically.[4]

Microscopic characters

Tremella species produce hyphae that are typically (but not always) clamped and have haustorial cells from which hyphal filaments seek out and penetrate the hyphae of the host.[10] 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 by yeast cells. Conidiophores are often present, producing conidiospores that are similar to yeast cells.[4]

Habitat and distribution

Species are mainly parasitic on wood-rotting fungi in the phyla Ascomycota and Basidiomycota,[11] particularly on species that occur on dead attached branches. Hosts include members of the corticioid fungi and Dacrymycetales in the Basidiomycota and species of Diaporthe, other Sordariomycetes, and lichens in the Ascomycota. Some Tremella species parasitize the fruit bodies of their hosts, others parasitize the mycelium within the wood.

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

Species and hosts

The list below includes species of Tremella (in the wide sense) that have recently been described or redescribed based on fruit bodies. Species based on yeasts are not included. Some additional older species may also be valid, but lack a modern description. The type locality (but not the wider distribution) is given for each species together with the host fungus, where known. Species belonging to Tremella in the strict sense are marked as such, as are those that have been transferred to new genera.

More information Image, Name ...
ImageNameCurrent StatusType LocalityHost
Tremella anaptychiaeSpainAnaptychia ciliaris[12]
Tremella anomalaBrazilHypoxylon spp[13]
Tremella arachisporaCameroonunknown[14]
Tremella armeniacaTremella sensu stricto[9]Costa RicaXylaria sp?[15]
Tremella aurantiaNaematelia aurantiaUSAStereum hirsutum[4][16]
Tremella aurantialbaNaematelia aurantialbaChinaStereum hirsutum[17]
Tremella aurantioluteaMexicounknown[18]
Tremella australeTremella sensu stricto[19]Chinaunknown[19]
Tremella australiensisAustraliaStereum spp[4]
Tremella boninensisTremella sensu stricto[9]Japanunknown[20]
Tremella boraborensisTahitiunknown
Tremella brasiliensisTremella sensu stricto[9]Brazilunknown[4][16][21]
Tremella callunicolaScotlandAleurodiscus norvegicus[22]
Tremella caloceraticolaDenmarkCalocera cornea[23]
Tremella caloplacaeGreeceCaloplaca spp[24](as Tremella sp. 1)
Tremella candelariellaeLuxembourgCandelariella spp[24]
Tremella cephalodiicolaPapua New GuineaPsoroma pannarioides[24]
Tremella cerebriformisTremella sensu stricto[9]Taiwanunknown[4]
Tremella cetrariellaeNorwayCetrariella delisei[25]
Tremella cetrariicolaScotlandCetraria spp[24]
Tremella cheejeniiTremella sensu stricto[9]Chinaunknown[9]
Tremella christianseniiDenmarkPhyscia spp[24]
Tremella cladoniaeGermanyCladonia spp[24]
Tremella clavisterigmaGuatemalaunknown[26]
Tremella coalescensTremella sensu stricto[8]USAunknown[4]
Tremella coccocarpiaePhilippinesCoccocarpia rottleri[24]
Tremella coffeicolorBermudaunknown[13][16](as T. auricularia)
Tremella colpomaticolaDenmarkColpoma quercinum[23]
Tremella compactaBrazilunknown[27]
Tremella coppinsiiSarawakPlatismatia spp[24]
Tremella dactylobasidiaSpainDendrothele macrosporae[28]
Tremella dendrographaeUSADendrographa minor[24]
Tremella diaporthicolaUSADiaporthe spp
Tremella discicolaBelgiumMollisia and Pyrenopeziza spp[29]
Tremella dumontiiEcuadorunknown[18]
Tremella durissimaArgentinaunknown[26]
Tremella dysentericaTremella sensu stricto[9]Brazilunknown[13][16]
Tremella encephalaNaematelia encephalaEuropeStereum sanguinolentum[4][30]
Tremella erythrinaTremella sensu stricto[9]Chinaunknown[9]
Tremella everniaeChinaEvernia mesomorpha[24]
Tremella exiguaFranceDiaporthe spp[4]
Tremella fibuliferaTremella sensu stricto[9]Brazilunknown
Tremella fimbriataPhaeotremella fimbriataEuropeStereum rugosum
Tremella flammeaTremella sensu stricto[9]Japan
Tremella flavaTremella sensu stricto[9]TaiwanHypoxylon spp[4]
Tremella foliaceaPhaeotremella foliaceaEuropeStereum sanguinolentum
Tremella frondosaPhaeotremella frondosaEuropeStereum spp
Tremella fuciformisTremella sensu stricto[9]BrazilAnnulohypoxylon archeri[31][32] and other Annulohypoxylon and/or Hypoxylon spp.[4][16][32]
Tremella fungicolaDenmarkMollisia cinerea[33]
Tremella fuscosuccineaPhaeotremella fuscosuccineaTaiwanunknown[4]
Tremella giraffaGermanyDacrymyces spp[4][34]
Tremella globisporaTremella sensu stricto[9]EnglandDiaporthe spp[4]
Tremella graphidastraePapua New GuineaGraphidastra multiformis[24]
Tremella guangxiensisTremella sensu stricto[19]Chinaunknown[19]
Tremella guttiformisSri Lankaunknown[35]
Tremella haematommatisUSAHaematomma puniceum[24]
Tremella hainanensisTremella sensu stricto[9]Chinaunknown[36]
Tremella harrisiiUSAPolymeridium catapastum[24]
Tremella huuskoneniiRaesaenenia huuskonenii[37]
Tremella hymenophagaSpainScytinostroma odoratum[38]
Tremella hypocenomycisFinlandHypocenomyce spp[24][39]
Tremella hypogymniaeFranceHypogymnia spp[24]
Tremella iduensisTremella sensu stricto[9]JapanHypoxylon spp [20]
Tremella imshaugiaeUSAImshaugia aleurites[40]
Tremella indecorataNorwayDiatrype bullata[39]
Tremella invasaDenmarkTrechispora spp[22]
Tremella karsteniiFinlandColpoma juniperi[23][39]
Tremella latisporaTremella sensu stricto[19]Chinaunknown[19]
Tremella leptogiiPeruLeptogium sp.[24]
Tremella lethariaeCanadaLetharia vulpina[41]
Tremella lichenicolaLuxembourgMycoblastus fucatus[24]
Tremella lilaceaCosta RicaDiaporthe sp?[15]
Tremella lloydiae-candidaeTremella sensu stricto[9]Japanunknown
Tremella lobariacearumMadeiraLobariaceae spp[24]
Tremella macroceratisNorwayCladonia macroceras[24]
Tremella mangensisChinaunknown[36]
Tremella mesenterellaTremella sensu stricto[9]CanadaPeniophora spp[21]
Tremella mesentericaTremella sensu stricto[9]SwedenPeniophora spp[21]
Tremella microcarpaPapua New Guinealichen sp.[24]
Tremella microsporaNaematelia microsporaSouth AfricaStereum spp[4]
Tremella monosporaPeruLeptogium sp.[24]
Tremella montis-wilhelmiiPapua New GuineaNormandina simodense sp.[24]
Tremella moriformisPseudotremella moriformisEnglandDiaporthe spp[4]
Tremella mycetophiloidesPhaeotremella mycetophiloidesJapanAleurodiscus amorphus and A. grantii[42]
Tremella mycophagaPhaeotremella mycophagaCanadaAleurodiscus amorphus and A. grantii[42]
Tremella nashiiUSAUsnea sorediifera[43]
Tremella nephromatisCanadaNephroma parile[24]
Tremella nieblaeUSANiebla cephalota[43]
Tremella nigrifactaCosta RicaDiatrypella sp.[15]
Tremella nivalisPseudotremella nivalisTaiwanDiatrype spp[4]
Tremella normandinaeHawaiiNormandina pulchella[24]
Tremella obscuraUSADacrymyces spp[34]
Tremella occultifuroideaTaiwanDacrymyces spp[44]
Tremella olensTremella sensu stricto[19]Australiaunknown[45]
Tremella papuanaPapua New GuineaHypogymnia pseudobitteriana[24]
Tremella parmeliarumPapua New GuineaParmotrema spp[24]
Tremella parmeliellaePapua New GuineaParmeliella foliicola[24]
Tremella penetransDenmarkDacrymyces spp[34]
Tremella pertusariaeNorthern IrelandPertusaria spp[24]
Tremella phaeographidisEnglandPhaeographis spp[24]
Tremella phaeographinaeUSAPhaeographina spp[24]
Tremella phaeophysciaeDenmarkPhaeophyscia orbicularis[24]
Tremella philippinensisTremella sensu stricto[9]Philippinesunknown
Tremella poilkavensisIndiaBiscogniauxia sp.
Tremella polyporinaCarcinomyces polyporinusScotlandPostia spp[34]
Tremella protoparmeliaeEnglandProtoparmelia spp[24]
Tremella pseudocyphellariaeMauritiusPseudocyphellaria desfontainii
Tremella psoroglaenaePapua New GuineaPsoroglaena spp[24]
Tremella psoromicolaChilePsoroma spp[24]
Tremella puncteliaeMexicoPunctelia borreri
Tremella puncteliotegensNew ZealandPunctelia borreri
Tremella purpurascentisUSADirinaria purpurascens
Tremella pyrenaicaFranceLecanora polytropa
Tremella ramalinaeMexicoRamalina spp[24]
Tremella ramboidiaeUSARamboldia haematites
Tremella resupinataTremella sensu stricto[9]TaiwanHypoxylon spp[4]
Tremella rhabdodisciJapanRhabdodiscus inalbescens
Tremella rhizocarpicolaNorway
Tremella rinodinaeDenmarkRinodina spp[24]
Tremella robustaUSARoccellina fransciscana
Tremella roseaAustriaunknown
Tremella roseolutescensTremella sensu stricto[9]Costa Ricaunknown[15]
Tremella rubromaculataTremella sensu stricto[9]Guatemalaunknown[26]
Tremella salmoneaTremella sensu stricto[9]Chinaunknown[9]
Tremella samoensisTremella sensu stricto[9]Samoaunknown
Tremella sanguineaPhaeotremella[46]ChinaStereum sp.
Tremella santessoniiZimbabweUsnea spp[24]
Tremella sarcographaeBrazilSarcographa medusulina
Tremella sarniensisGuernseyPhanerochaete sordida[22]
Tremella seclusaFranceunknown
Tremella silvae-dravedaeDenmarkunknown[23]
Tremella simplexPhaeotremella simplexCanadaAleurodiscus amorphus[22][42]
Tremella spiciferaBelgiumMassarina arundinacea[47]
Tremella steidleriCzech RepublicStereum hirsutum[30]
Tremella stevensianaAustraliaUsnea confusa[24]
Tremella stictaeRwandaSticta weigelii[24]
Tremella strigulaeUSAStrigula stigmatella
Tremella subalpinaRussiaunknown
Tremella subencephalaCanadaAcanthophysium lividocoeruleum[42]
Tremella subfibuliferaTremella sensu stricto[19]Brazilunknown[19]
Tremella subrubiginosaTremella sensu stricto[9]Panamaunknown
Tremella sulcariaeChinaSulcaria sulcata[24]
Tremella synarthoniaeUSASynarthonia inconspicua
Tremella taiwanensisTremella sensu stricto[9]Taiwanunknown[4]
Tremella tawaTremella sensu stricto[9]New Zealandunknown[48]
Tremella telleriaeSpainPostia spp[38]
Tremella teloschistisUSATeloschistes exilis
Tremella tornabeaeCanary IslandsTornabea scutellifera
Tremella translucensPhaeotremella translucensScotlandLophodermium spp[49](as Sirotrema translucens)
Tremella tremelloidesNaematelia[35]USAStereum sp.[35]
Tremella tropicaTremella sensu stricto[9]Taiwanunknown[4]
Tremella tubulosaeScotlandHypogymnia tubulosa
Tremella tuckeraeUSARamalina sinensis[43]
Tremella umbilicariaePeruUmbilicaria sp.
Tremella versicolorEnglandPeniophora spp[22][42]
Tremella vesiculosaNew ZealandXylaria sp?[48]
Tremella volcanaguaGuatemalaunknown[26]
Tremella wediniiUSA
Tremella wirthiiGermanyProtoparmelia sp.[24]
Tremella wrightiiCubaunknown[16]
Tremella xanthomendozaeUSAGallowayella weberi
Tremella yokohamensisTremella sensu stricto[9]Japanunknown
Tremella zamoraeUSALecanora louisianae
Tremella zhejiangensisTremella sensu stricto[50]Chinaunknown[50]
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