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Phoma medicaginis var. medicaginis (lucerne black stem )
Phoma medicaginis var. medicaginis
lucerne black stem
Ascocyta imperfecta
Worldwide-temperate regions (Farr and Rossman, 2020)
Midwest states and CA
2022-08-10
fungus
alfalfa
PHOMME
1 Known Hosts
Medicago sativa
alfalfa
Yes
PHOMME-2, PHOMME-3, PHOMME-4, PHOMME-5, PHOMME-6
Although these references indicate that the pathogen is commonly seedborne, they present minimal evidence of seed transmission. Most literature refers to the old name of Ascocyta imperfecta
Yes
Agar plating
Method used experimentally only and has not been standardized or verified for clinical use.
PHOMME-4, PHOMME-5
Weed control and burning eliminate overwintering on plant tops.
PHOMME-5
PHOMME-2
Neergaard, P. 1977. Seed Pathology Volume 1. McMillian Press, London, UK 839pp
PHOMME-3
Boerema, GH, et.al. 2004. Phoma Identification Manual. CABI Publishing, Wallingford, UK pp470
PHOMME-4
Mead and McCormack, 1961. Studies on Ascocyta imperfecta Peck. Parasitic strains among fifty isolates from Canadian alfalfa seed. Can J. Bot. 39:793-797
PHOMME-5
Kernkamp and Hendricks. 1953. The relationship of Ascocyta imperfecta to alfalfa seed production in Minnesota. Phytopathology 43:378-383
PHOMME-6
Farr, DF and Rossman AY 2015. Fungal Databases, Systematic Mycology and Microbiology Laboratory, ARS, USDA. http://nt.ars-grin.gov/fungaldatabases/
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