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Geosmithia

{{Short description|Genus of fungi}}

{{Taxobox

| image = Black Walnut Leaves.jpg

| image_width = 240px

| image_caption = Geosmithia morbida on leaves of black walnut

| regnum = Fungi

| divisio = Ascomycota

| classis = Sordariomycetes

| ordo = Hypocreales

| familia = incertae sedis

| genus = Geosmithia

| genus_authority = Pitt (1979)

| type_species = Geosmithia lavendula

| type_species_authority = (Raper & Fennell) Pitt (1979)

| subdivision_ranks = Species

| subdivision =

}}

Geosmithia is a genus of anamorphic fungi of uncertain familial placement in the order Hypocreales. The genus, circumscribed by Australian mycologist John Pitt in 1979, is widely distributed. A 2008 estimate placed ten species in the genus, but several new species have since been described. Thousand cankers disease, which affects economically important black walnut (Juglans nigra) populations in North America, is caused by Geosmithia morbida.

Species in the genus are generally similar to those in Penicillium, but can be distinguished from them by forming cylindrical conidia from rough-walled phialides. Additionally, the conidia of Geosmithia do not have a green color, in contrast to the characteristic blue-grey or green-grey conidia of Penicillium. Some Geosmithia species have teleomorphic forms that are classified in the genus Talaromyces. However, Geosmithia is a polyphyletic taxon with evolutionary affinities to at least three groups of the euascomycete lineage within the Ascomycota. The generic name Geosmithia honors British mycologist George Smith.

Species

As accepted by Species Fungorum;{{cite web |title=Geosmithia - Search Page |url=http://www.speciesfungorum.org/Names/Names.asp?strGenus=Geosmithia |website=www.speciesfungorum.org |publisher=Species Fungorum |access-date=28 October 2022}}

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Former species;

  • G. argillacea {{Au|(Stolk, H.C. Evans & T. Nilsson) Pitt (1979)}} = Rasamsonia argillacea Aspergillaceae family
  • G. cylindrospora {{Au|(G. Sm.) Pitt (1979)}} = Rasamsonia cylindrospora Aspergillaceae
  • G. pallida {{Au|(G. Sm.) M. Kolařík, Kubátová & Pažoutová (2004)}} = Geosmithia putterillii
  • G. viridis {{Au|Pitt & A.D. Hocking (1985)}} = Talaromyces viridulus Aspergillaceae

References

{{Reflist|colwidth=30em|refs=

{{cite book |vauthors=Derickx L, Antunes PM |title=A Guide to the Identification and Control of Exotic Invasive Species in Ontario's Hardwood Forests |url=https://books.google.com/books?id=-QlXAQAAQBAJ&pg=PA259 |year=2013 |publisher=Algoma University |isbn=978-0-929100-21-0 |pages=259–60}}

{{cite book |vauthors=Kirk PM, Cannon PF, Minter DW, Stalpers JA |title=Dictionary of the Fungi |edition=10th |publisher=CAB International |location=Wallingford, UK |year=2008 |page=281 |isbn=978-0-85199-826-8}}

{{cite journal |vauthors=Kolarík M, Kubátova A, Cepicka I, Pazoutovtá S, Srůtka P |title=A complex of three new white-spored, sympatric, and host range limited Geosmithia species |journal=Mycological Research |year=2005 |volume=109 |issue=12 |pages=1323–36 |doi=10.1017/S0953756205003965 |pmid=16353633}}

{{cite journal |vauthors=Kolarík M, Kirkendall LR |title=Evidence for a new lineage of primary ambrosia fungi in Geosmithia Pitt (Ascomycota: Hypocreales) |journal=Fungal Biology |year=2010 |volume=114 |issue=8 |pages=676–89 |doi=10.1016/j.funbio.2010.06.005|pmid=20943178 }}

{{cite journal |author=Pitt JI. |title=Geosmithia, gen. nov. for Penicillium lavendulum and related species |journal=Canadian Journal of Botany |year=1979 |volume=57 |issue=19 |pages=2021–30 |doi=10.1139/b79-252}}

{{cite journal |vauthors=((Wu Y-M)), ((Xu J-J)), ((Wang H-F)), ((Zhang T-Y)) |title=Geosmithia tibetensis sp. nov. and new Gibellulopsis and Scopulariopsis records from Qinghai-Tibet |journal=Mycotaxon |year=2013 |volume=125 |pages=59–64 |doi=10.5248/125.59|doi-access=free }}

{{cite journal |vauthors=Yaguchi T, Miyadoh S, Udagawa SI |title=Chromocleista, a new cleistothecial genus with a Geosmithia anamorph |journal=Transactions of the Mycological Society of Japan |year=1993 |volume=102 |pages=101–8}}

{{cite journal |vauthors=Yaguchi T, Someya A, Udagawa S |title=Two new species of Talaromyces from Taiwan and Japan |journal=Mycoscience |year=1994 |volume=35 |issue=3 |pages=249–55 |doi=10.1007/BF02268446}}

{{cite journal |vauthors=Ogawa H, Yoshimura A, Sugiyama J |title=Polyphyletic Origins of Species of the Anamorphic Genus Geosmithia and the Relationships of the Cleistothecial Genera: Evidence from 18S, 5S and 28S rDNA Sequence Analyses |journal=Mycologia |year=1997 |volume=89 |issue=5 |pages=756–71 |doi=10.2307/3761132|jstor=3761132 }}

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External links

  • {{IndexFungorum|8324}}

{{Taxonbar|from=Q5548537}}

Category:Enigmatic Hypocreales taxa

Category:Sordariomycetes genera

{{Hypocreales-stub}}