Asteraceae family
lettuce, chrysanthimum
1 Related Pests
Phymatotrichopsis omnivora
fungus
Hydnum omnivorum, Ozonium auricomum, Ozonium omnivorum, Phymatotrichopsis omnivorum, Phymatotrichum omnivorum
North America: Mexico, USA
AZ, AK, CA, HI, LA, NV, NM, OK, TX, UT
China
2025-08-05
Phymatotrichopsis omnivora is a soil-borne fungus primarily found in warm, alkaline soils, which can lead to sudden plant death and root decay. The pathogen spreads through soil and root contact, survives for years via sclerotia, and is very difficult to manage once established.
Mainly affects cotton but can infect over 2,000 dicot species, causing major losses in crops and ornamentals, while monocots are largely immune.
No
CABI CPC, EPPO, PHMPOM-4
Seed is not considered a pathway for any of its hosts.
CABI CPC, EPPO, PHMPOM-4
Crop Protection Compendium. Wallingford, UK: CAB International. www.cabi.org/cpc.
OEPP/EPPO Global Database - European and Mediterranean Plant Protection Organization
Uppalapati, S. R., Young, C. A., Marek, S. M., & Mysore, K. S. (2010). Phymatotrichum (cotton) root rot caused by Phymatotrichopsis omnivora: retrospects and prospects. Molecular plant pathology, 11(3), 325-334.
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