Phymatotrichopsis omnivora

TaxID: 231936

Basic Information

Phymatotrichopsis omnivora

Cotton Root Rot

Texas root rot (also known as Phymatotrichopsis root rot, Phymatotrichum root rot, cotton root rot, or, in the older literature, Ozonium root rot) is a disease that is fairly common in Mexico and the southwestern United States resulting in sudden wilt and death of affected plants, usually during the warmer months. It is caused by a soil-borne fungus named Phymatotrichopsis omnivora that attacks the roots of susceptible plants. It was first discovered in 1888 by Pammel and later named by Duggar in 1916. A monograph of this disease, which includes a historical review, was written by R.B. Streets and H.E. Bloss in 1973.

from Wikipedia

Taxonomic Information

Eukaryota

Ascomycota

Pezizomycetes

Pezizales

Rhizinaceae

Phymatotrichopsis

omnivora

Undefined

Photos (5 photos)

Phymatotrichopsis omnivora
c
(c) Gp Jennett@BY-NC
Phymatotrichopsis omnivora
c
(c) tommygatz@BY-NC
Phymatotrichopsis omnivora
c
(c) Gp Jennett@BY-NC
Phymatotrichopsis omnivora
c
(c) tommygatz@BY-NC
Phymatotrichopsis omnivora
c
(c) tommygatz@BY-NC

Morphological Features

Phymatotrichopsis omnivora (syn. Phymatotrichum omnivorum) is an asexual fungus with no known sexual stage. It produces long, septate hyphae that form a dense mycelium. A distinguishing morphological feature is the production of cruciate (cross-shaped) hyphae that branch at right angles from the main hyphae, which are characteristic for identification. The fungus forms mycelial strands (rhizomorphs) visible to the naked eye, approximately 200 µm in diameter, bearing acicular hyphae. On culture media, the mycelium is sterile in its early stages, with thin strands at right angles and swollen nodes bearing 2–4 branches. Conidia are unicellular, hyaline, globose (4.8–5.5 µm in diameter) or ovate (6–8 × 5–6 µm), occasionally formed on epigeous spore mats but considered sterile and non-functional. Sclerotia are irregular in shape, brown to black, 1–5 mm in diameter, serving as the primary survival structures.

Source: NCBI Life Stage: Mycelium / Rhizomorph / Conidia (sterile) / Sclerotium Source Type: Scholarly article
Citation:

Uppalapati,et al. (2010). Phymatotrichum (cotton) root rot caused by Phymatotrichopsis omnivora: retrospects and prospects. Molecular Plant Pathology, 11(3), 325–334.

Host Plants (513 host plants)

Data sources: EPPO Global Database and relevant literature.

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Quarantine Status (75 records)

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

Country Status Year Added
Argentina Absent 2019
Armenia Absent —
Australia Quarantine pests —
Austria Quarantine pests 2019
Azerbaijan Absent 2024
Belgium Unknow 2019
Bulgaria Quarantine pest ((EU) 2019/2072 Annex II A) 2019
Bahrain Quarantine pests 2003
Belarus Absent 1994
Brazil A1 list 2018
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Distribution (19 countries)

Data Sources: EPPO Global Database and GBIF.

6
Present
13
Absent
0
Unknown/Other
Country Status State
Argentina Absent —
Brazil Absent
Canada Present —
Colombia Absent —
Dominican Republic Absent —
Spain Present —
India Absent —
libya Absent —
Mexico Present —
Malawi Absent —
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Distribution Map (Latitude and longitude coordinates sourced from GBIF.)

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Genomes (1 records)

Data source: NCBI.

Assembly Accession Assembly Level Genome Size(Mb) Contig N50(Kb) Scaffold N50(Kb) BUSCO% Downloads Actions
GCA_016880775.1 Scaffold 109 9 9 -

Transcriptomes (5 records)

Data source: NCBI.

Run ID Tissue Developmental Stage Sex Read Count Location Actions
SRR12101472 Whole organism 1ng_fungicide_rep_2 - 46240340 USA: Oklahoma
SRR12101471 Whole organism 1ng_fungicide_rep_3 - 40079926 USA: Oklahoma
SRR12101482 Whole organism control_rep_2 - 34515182 -
SRR12101481 Whole organism control_rep_3 - 36882712 -
SRR12101470 Whole organism control_rep_1 - 44086597 USA: Oklahoma

DNA Barcodes (0 records)

View all

Data source: BOLD.

No DNA barcode records available.

Literature