Heterobasidion irregulare

TaxID: 984962

Basic Information

Heterobasidion irregulare

Root and Butt Rot

Heterobasidion irregulare is a tree root rotting pathogenic fungus that belongs to the genus Heterobasidion, which includes important pathogens of conifers and other woody plants. It has a wide host and geographic range throughout North America and causes considerable economic damage in pine plantations in the United States. This fungus is also a serious worry in eastern Canada. Heterobasidion irregulare has been introduced to Italy (Lazio)(modifica) where it has been responsible for extensive tree mortality of stone pine. Due to the ecology, disease type, host range/preference, interfertility group, and genetic information, H. irregulare (formerly known as Heterobasidion annosum P ISG) was designated a new species and distinguished from Heterobasidion occidentale (formerly known as Heterobasidion annosum S ISG).

from Wikipedia

Taxonomic Information

Eukaryota

Basidiomycota

Agaricomycetes

Russulales

Bondarzewiaceae

Heterobasidion

irregulare

Undefined

Photos (5 photos)

Heterobasidion irregulare
c
(c) Cindi Fitzgerald@BY-NC
Heterobasidion irregulare
c
(c) Django Grootmyers@BY-SA
Heterobasidion irregulare
c
(c) Taye Bright@BY-NC
Heterobasidion irregulare
c
(c) Cindi Fitzgerald@BY-NC
Heterobasidion irregulare
c
(c) Cindi Fitzgerald@BY-NC

Morphological Features

No morphological description available.

Host Plants (43 host plants)

Data sources: EPPO Global Database and relevant literature.

Page 1 of 5

Quarantine Status (4 records)

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

Country Status Year Added
EPPO A2 Present —
United Kingdom A1 list 2025
Morocco Quarantine pest 2018
Uruguay Absent —

Distribution (13 countries)

Data Sources: EPPO Global Database and GBIF.

11
Present
2
Absent
0
Unknown/Other
Country Status State
Belgium Absent —
Canada Present
Cuba Present —
Dominican Republic Present —
France Present —
Greece Present —
Italy Present —
Lithuania Present —
Mexico Present —
Netherlands Absent —
Page 1 of 2

Distribution Map (Latitude and longitude coordinates sourced from GBIF.)

Download CSV

Genomes (1 records)

Data source: NCBI.

Assembly Accession Assembly Level Genome Size(Mb) Contig N50(Kb) Scaffold N50(Kb) BUSCO% Downloads Actions
GCA_001457915.1 Scaffold 26 17 2077 -

Transcriptomes (3 records)

Data source: NCBI.

Run ID Tissue Developmental Stage Sex Read Count Location Actions
ERR3435151 - - - 39106981 -
ERR3435152 - - - 13150095 -
ERR3435153 - - - 13210765 -

DNA Barcodes (0 records)

View all

Data source: BOLD.

No DNA barcode records available.

Literature