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Agaricales

From Wikipedia, the free encyclopedia

Agaricales
Temporal range: Upper Aptian–Holocene, 113–0 Ma[1]
Agaricus campestris (field mushroom) (Agaricaceae)
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Subclass: Agaricomycetidae
Order: Agaricales
Underw. (1899)[2]
Subdivisions
46 families, 400+ genera
Synonyms[3]

Amanitales Jülich (1981)
Cortinariales Jülich (1981)
Entolomatales Jülich (1981)
Fistulinales Jülich (1981)
Schizophyllales Nuss (1980)

The Agaricales are an order of fungi in the division Basidiomycota. As originally conceived, the order contained all the agarics (gilled mushrooms), but subsequent research has shown that not all agarics are closely related and some belong in other orders, such as the Russulales and Boletales. Conversely, DNA research has also shown that many non-agarics, including some of the clavarioid fungi (clubs and corals) and gasteroid fungi (puffballs and false truffles) belong within the Agaricales. The order has 46 extant families, more than 400 genera, and over 25,000 described species,[4] along with six extinct genera known only from the fossil record.[5][6][1] Species in the Agaricales range from the familiar Agaricus bisporus (cultivated mushroom) and the deadly Amanita virosa (destroying angel) to the coral-like Clavaria zollingeri (violet coral) and bracket-like Fistulina hepatica (beefsteak fungus).

History, classification and phylogeny

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Cladogram of the Agaricales, showing the division into six major clades, based on Matheny et al., 2006.[7]

In his three volumes of Systema Mycologicum published between 1821 and 1832, Elias Fries put almost all of the fleshy, gill-forming mushrooms in the genus Agaricus. He organized the large genus into "tribes", the names of many of which still exist as common genera of today. Fries later elevated several of these tribes to generic level, but later authors—including Gillet, Karsten, Kummer, Quélet, and Staude—made most of the changes. Fries based his classification on macroscopic characters of the fruit bodies and color of the spore print. His system had been widely used as it had the advantage that many genera could be readily identified based on characters observable in the field. Fries's classification was later challenged when microscopic studies of basidiocarp structure, initiated by Fayod and Patouillard, demonstrated several of Fries's groupings were unnatural.[8] In the twentieth century, Rolf Singer's influential work The Agaricales in Modern Taxonomy, published in four editions spanning from 1951 to 1986, used both Fries's macroscopic characters and Fayod's microscopic characters to reorganize families and genera; his final classification included 230 genera within 18 families.[9] Singer treated three major groups within the Agaricales sensu lato: the Agaricales sensu stricto, Boletineae, and Russulales. These groups are still accepted by modern treatments based on DNA analysis, as the euagarics clade, bolete clade, and russuloid clade.[10]

Molecular phylogenetics research has demonstrated that the euagarics clade is roughly equivalent to Singer's Agaricales sensu stricto.[11][12][13] A large-scale study by Brandon Matheny and colleagues used nucleic acid sequences representing six gene regions from 238 species in 146 genera to explore the phylogenetic grouping within the Agaricales. The analysis showed that most of the species tested could be grouped into six clades that were named the Agaricoid, Tricholomatoid, Marasmioid, Pluteoid, Hygrophoroid and Plicaturopsidoid clades.[7]

The bird's nest fungus Cyathus striatus

Molecular studies have shown that agarics are more divergent than once thought. Agarics in the genera Russula and Lactarius, for example, belong to the order Russulales, whilst agarics in the genera Paxillus and Hygrophoropsis belong in the Boletales. Conversely some genera with non-agaric fruit bodies, such as the puffballs, bird's nest fungi, and many clavarioid fungi, belong in the Agaricales.

Distribution and habitat

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Members of the Agaricales are ubiquitous, with species found in all continents. The great majority are terrestrial, in almost every habitat from woodland and grassland to deserts and dunes. Agaricoid species were long thought to be solely terrestrial, until the 2005 discovery of Psathyrella aquatica, the only gilled mushroom known to fruit underwater.[14] Species are variously saprotrophic or ectomycorrhizal, occasionally parasitic on plants or other fungi, and sometimes lichenized.

the Agaricales include six monotypic fossil genera mostly found fossilized in amber. The oldest records are from three Cretaceous age genera; the late Aptian Gondwanagaricites magnificus from the Crato Formation (Brazil),[1] the Albian age (approximately 100 Ma) Palaeoagaracites antiquus from Burmese amber and the slightly younger Turonian New Jersey Amber species Archaeomarasmius leggeti.[5] The three other species, Aureofungus yaniguaensis, Coprinites dominicana and Protomycena electra are known from single specimens found in the Dominican amber mines of Hispaniola.[6]

Genera Incertae sedis

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Setchelliogaster is a genus of gasteroid fungi in the Agaricales that is incertae sedis with respect to familial placement.

There are several genera classified in the Agaricales that are i) poorly known, ii) have not been subjected to DNA analysis, or iii) if analysed phylogenetically do not group with as yet named or identified families, and have not been assigned to a specific family (i.e., Incertae sedis with respect to familial placement). These include:

See also

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References

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  1. ^ a b c Heads, Sam W.; Miller, Andrew N.; Crane, J. Leland; Thomas, M. Jared; Ruffatto, Danielle M.; Methven, Andrew S.; Raudabaugh, Daniel B.; Wang, Yinan (2017). "The oldest fossil mushroom". PLOS ONE. 12 (6): e0178327. Bibcode:2017PLoSO..1278327H. doi:10.1371/journal.pone.0178327. PMC 5462346. PMID 28591180.
  2. ^ Underwood LM. (1899). Moulds, mildews and mushrooms: a guide to the systematic study of the Fungi and Mycetozoa and their literature. New York, New York: Henry Holt. p. 97.
  3. ^ "Agaricales Underw. 1899". MycoBank. International Mycological Association. Retrieved 2010-12-30.
  4. ^ "Catalogue of Life". Retrieved 2023-02-15.
  5. ^ a b Poinar GO, Buckley R (2007). "Evidence of mycoparasitism and hypermycoparasitism in Early Cretaceous amber". Mycological Research. 111 (4): 503–506. doi:10.1016/j.mycres.2007.02.004. PMID 17512712.
  6. ^ a b Hibbett DS, Binder M, Wang Z, Goldman Y (2003). "Another Fossil Agaric from Dominican Amber". Mycologia. 95 (4): 685–687. doi:10.2307/3761943. JSTOR 3761943. PMID 21148976.(subscription required)
  7. ^ a b Matheny PB, Curtis JM, Hofstetter V, Aime MC, Moncalvo JM, Ge ZW, Slot JC, Ammirati JF, Baroni TJ, Bougher NL, Hughes KW, Lodge DJ, Kerrigan RW, Seidl MT, Aanen DK, DeNitis M, Daniele GM, Desjardin DE, Kropp BR, Norvell LL, Parker A, Vellinga EC, Vilgalys R, Hibbett DS (2006). "Major clades of Agaricales: a multilocus phylogenetic overview" (PDF). Mycologia. 98 (6): 982–95. doi:10.3852/mycologia.98.6.982. PMID 17486974. Archived from the original (PDF) on 2016-03-03.
  8. ^ Kirk PM, Cannon PF, Minter DW, Stalpers JA (2008). Dictionary of the Fungi (10th ed.). Wallingford, UK: CABI. p. 12. ISBN 978-0-85199-826-8.
  9. ^ Singer R. (1986). The Agaricales in Modern Taxonomy (4th ed.). Koenigstein Königstein im Taunus, Germany: Koeltz Scientific Books. ISBN 978-3-87429-254-2.
  10. ^ Hibbett DH, Thorn RG (22 September 2000). "Basidiomycota: Homobasidiomycetes". In McLaughlin DJ, McLaughlin EG, Lemke PA (eds.). The Mycota. VIIB. Systematics and Evolution. Springer-Verlag. pp. 121–68. ISBN 978-3-540-58008-9.
  11. ^ Hibbett DS, Pine EM, Langer E, Langer G, Donoghue MJ (1997). "Evolution of gilled mushrooms and puffballs inferred from ribosomal DNA sequences". Proceedings of the National Academy of Sciences of the United States of America. 94 (22): 12002–6. Bibcode:1997PNAS...9412002H. doi:10.1073/pnas.94.22.12002. PMC 23683. PMID 9342352.
  12. ^ Moncalvo JM, Lutzoni FM, Rehner SA, Johnson J, Vilgalys R (2000). "Phylogenetic relationships of agaric fungi based on nuclear large subunit ribosomal DNA sequences". Systematic Biology. 49 (2): 278–305. doi:10.1093/sysbio/49.2.278. PMID 12118409.
  13. ^ Moncalvo JM, Vilgalys R, Redhead SA, Johnson JE, James TY, Catherine Aime M, Hofstetter V, Verduin SJ, Larsson E, Baroni TJ, Greg Thorn R, Jacobsson S, Clémençon H, Miller OK (2002). "One hundred and seventeen clades of euagarics" (PDF). Molecular Phylogenetics and Evolution. 23 (3): 357–400. Bibcode:2002MolPE..23..357M. doi:10.1016/S1055-7903(02)00027-1. PMID 12099793.
  14. ^ Frank JL, Coffan RA, Southworth D (2010). "Aquatic gilled mushrooms: Psathyrella fruiting in the Rogue River in southern Oregon". Mycologia. 102 (1): 93–107. doi:10.3852/07-190. PMID 20120233. S2CID 7175296.
  15. ^ Jacobsson S, Larsson E (2007). "Hemistropharia, a new genus in Agaricales". Mycotaxon. 102: 235–40.
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