Geosmithia pallida

TaxID: 240217

Basic Information

Geosmithia pallida

Fungus

The foamy bark canker is a disease affecting oak trees in California caused by the fungus Geosmithia sp. #41 and spread by the Western oak bark beetle (Pseudopityophthorus pubipennis). This disease is only seen through the symbiosis of the bark beetles and the fungal pathogen. The bark beetles target oak trees and bore holes through the peridermal tissues, making tunnels within the phloem. The fungal spores are brought into these tunnels by the beetles and begin to colonize the damaged cells inside the tunnels. Symptoms of the developing fungus include wet discoloration seeping from the beetle entry holes as the fungus begins to consume phloem and likely other tissues. If bark is removed, necrosis of the phloem can be observed surrounding the entry hole(s). As the disease progresses, a reddish sap and foamy liquid oozes from entry holes, thus giving the disease the name foamy bark canker. Eventually, after the disease has progressed, the tree dies. This disease is important because of its detrimental effects on oak trees and its ability to spread to several new Californian counties in just a couple of years.

from Wikipedia

Taxonomic Information

Eukaryota

Ascomycota

Sordariomycetes

Hypocreales

Bionectriaceae

Geosmithia

pallida

Undefined

Photos (3 photos)

Geosmithia pallida
c
(c) Dana Elizabeth Austin@BY-NC
Geosmithia pallida
c
(c) alzek@BY-NC
Geosmithia pallida
c
(c) Helena Perry@BY-NC

Morphological Features

No morphological description available.

Host Plants (0 host plants)

Data sources: EPPO Global Database and relevant literature.

No host plants available.

Quarantine Status (1 records)

Data sources: IPPC website and national quarantine websites; verified by human review.

Country Status Year Added
Pakistan Quarantine pests —

Distribution (0 countries)

Data Sources: EPPO Global Database and GBIF.

0
Present
0
Absent
0
Unknown/Other

No distribution records available.

Genomes (0 records)

Data source: NCBI.

No genome records available.

Transcriptomes (1 records)

Data source: NCBI.

Run ID Tissue Developmental Stage Sex Read Count Location Actions
SRR14289628 - - - 41618677 China: South China sea

DNA Barcodes (0 records)

View all

Data source: BOLD.

No DNA barcode records available.

Literature