Geosmithia morbida M. Kolarík, E. Freeland, C. Utley & Tisserat
Geosmithia morbida: https://marylandbiodiversity.com/species/17768
Synonyms
TCD  Thousand Cankers Disease 
Tags
Invasive

Map Snapshot

1 Record

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Status

Thousand Cankers Disease is a regulated invasive species in the US (MISC 2022).

Relationships

"Thousand cankers disease (TCD) is a disease complex native to the western United States and primarily affects Black Walnut (Juglans nigra). This disease is the result of the combined activity of a fungus (Geosmithia morbida) and the Walnut Twig Beetle (Pityophthorus juglandis)." (Thousand Cankers Disease web site).

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Resources

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Eating mushrooms can be dangerous. One should do so only with expert advice and great care. MBP accepts no liability for injury sustained in consuming fungi or other biodiversity.MBP marks as "Invasive" any taxon listed in the Maryland Invasive Species Council (MISC) list of Invasive Species of Concern in Maryland. You can read their criteria and review the lists here: https://mdinvasives.org/species-of-concern/. Use of media featured on Maryland Biodiversity Project is only permitted with express permission of the photographer.

Source: Wikipedia

Geosmithia morbida
Signs of Geosmithia morbida and possibly a walnut twig beetle (Pityophthorus juglandis) on Black Walnut (Juglans nigra)
Signs of Geosmithia morbida and possibly a walnut twig beetle (Pityophthorus juglandis) on Black Walnut (Juglans nigra)
Scientific classification Edit this classification
Domain: Eukaryota
Kingdom: Fungi
Division: Ascomycota
Class: Sordariomycetes
Order: Hypocreales
Family: Bionectriaceae
Genus: Geosmithia
Species:
G. morbida
Binomial name
Geosmithia morbida

Geosmithia morbida is a species of anamorphic fungus in the Bionectriaceae family that, together with the activity of the walnut twig beetle, causes thousand cankers disease in species of walnut trees (Juglans spp.).[1] It was described as new to science in 2010 from specimens collected in the southern United States. The fungus, transmitted by the walnut twig beetle, Pityophthorus juglandis, is known from the western USA from California to Colorado. The cankers resulting from infection restrict nutrient flow and typically kill the host tree within three to four years. Based on closeness of internal transcribed spacer DNA, the closest relative of G. morbida is G. fassatiae. The specific epithet morbida refers to the deadly pathogenic effect it has on its host.[1]

References

[edit]
  1. ^ a b Kolarik, M.; Freeland, E.; Utley, C.; Tisserat, N. (2011). "Geosmithia morbida sp. nov., a new phytopathogenic species living in symbiosis with the walnut twig beetle (Pityophthorus juglandis) on Juglans in USA". Mycologia. 103 (2): 325–332. doi:10.3852/10-124. PMID 20943528. S2CID 35496500.
[edit]


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