Phymatotrichopsis omnivora
cotton root rot
Hydnum omnivorum, Ozonium auricomum, Ozonium omnivorum, Phymatotrichopsis omnivorum, Phymatotrichum omnivorum
North America: Mexico, USA
AZ, AK, CA, HI, LA, NV, NM, OK, TX, UT
2025-08-05
fungus
China
Mainly affects cotton but can infect over 2,000 dicot species, causing major losses in crops and ornamentals, while monocots are largely immune.
PHMPOM
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.
9 Known Hosts
Apiceae family
celery
No
CABI CPC, EPPO, PHMPOM-4
Seed is not considered a pathway for any of its hosts.
2025-08-05 20:31:56
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.
Asteraceae family
lettuce, chrysanthimum
No
CABI CPC, EPPO, PHMPOM-4
Seed is not considered a pathway for any of its hosts.
2025-08-05 20:32:25
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.
Brassicaceae family
cabbage, cauliflower, broccoli, kale, turnip, radish
No
CABI CPC, EPPO, PHMPOM-4
Seed is not considered a pathway for any of its hosts.
2025-08-05 20:32:48
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.
Chenopodiaceae family
table beet, sugarbeet, chard
No
CABI CPC, EPPO, PHMPOM-4
Seed is not considered a pathway for any of its hosts.
2025-08-05 20:33:10
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.
Cucurbitaceae family
melon, pumpkin, squash, cucumber, watermelon
No
CABI CPC, EPPO, PHMPOM-4
Seed is not considered a pathway for any of its hosts.
2025-08-05 20:33:30
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.
Fabaceae family
soybean, common bean, alfalfa
No
CABI CPC, EPPO, PHMPOM-4
Seed is not considered a pathway for any of its hosts.
2025-08-05 20:33:55
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.
Malvaceae family
cotton
No
CABI CPC, EPPO, PHMPOM-4
Seed is not considered a pathway for any of its hosts.
2025-08-05 20:34:18
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.
Solanaceae family
tomato, pepper
No
CABI CPC, EPPO, PHMPOM-4
Seed is not considered a pathway for any of its hosts.
2025-08-05 20:34:41
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.
Umbiliferaceae family
carrot, parsley
No
CABI CPC, EPPO, PHMPOM-4
Seed is not considered a pathway for any of its hosts.
2025-08-05 20:35:00
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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