Pests Advanced Search Hosts Advanced Search
Diaporthe phaseolorum var. caulivora (northern stem canker of soybean, stem canker )
Diaporthe phaseolorum var. caulivora
northern stem canker of soybean, stem canker
Diaporthe caulivora
Asia: South Korea; Europe: Austria, Bulgaria, Coratia, Frnace, Italy, Russia, Serbia; North America: Canada, USA; South America: Argentina, Brazil, Ecuador, Uruguay.
IL, IN, IA, MD, MI, MN, MO, NJ, NY, ND, OH, SC, WI
2025-09-22
fungus
China
Main: soybean; Other: beans (vigna sp)
DIAPPC
Diaporthe caulivora spreads mainly through infected seeds and crop residue, with spores moving short distances via rain splash. It can survive in plant debris but not long in bare soil.
1 Known Hosts
Glycine max
soybean
Yes
DIAPPC-2, DIAPPC-3, DIAPPC-4, DIAPPC-6, DIAPPC-7, DIAPPC-8, DIAPPC-9
Diaporthe caulivora is part of the Phomopsis Complex, and while seed can serve as a transmission pathway, research shows seed transmission occurring in less than 0.5% of seeds. The fungus also survives in crop residue, allowing it to persist between seasons, and infects plants primarily under wet or stressful conditions.
Yes
Culture plating, Blotter incubation
These are standard methods of the NSHS.
Culture plating or Blotter incubation are both NSHS standard methods.
DIAPPC-5
Biological, chemical
Resistant varieties and using clean seed are important for managing the disease. Captan,Thiram fungicides reduce infection
DIAPPC-6
2025-09-22 16:54:20
DIAPPC-2
Zhang, A. W.; Hartman, G. L.; Curio-Penny, B.; Pedersen, W. L.; Becker, K. B., 1999. Molecular detection of Diaporthe phaseolorum and Phomopsis longicolla from soybean seeds. Phytopathology 89:796-80
DIAPPC-3
Santos, J. M.; Vrandečić, K.; Ćosić, J.; Duvnjak, T.; Phillips, A. J. L. 2011. Resolving the Diaporthe species occurring on soybean in Croatia. Persoonia 27:9-19. Nationaal Herbarium Nederland, Leiden, Netherlands
DIAPPC-4
McGee DC, Biddle JA. 1987. Seedborne Diaporthe phaseolorum var. caulivora in Iowa and its relationship to soybean stem canker in the Southern United States.Plant Disease 71; 620-622.
DIAPPC-6
Backman PA, Weaver DB, Morgan-Jones G, 1985. Soybean stem canker: an emerging disease problem. Plant Disease, 69:641-647
DIAPPC-7
Farr, D.F. and Rossman, A.Y. Fungal Databases, Systematic Mycology and Microbiology Laboratory, ARS, USDA. 2016, http://nt.ars-grin.gov/fungaldatabases/
DIAPPC-8
Mena, E., Stewart, S., Montesano, M., & Ponce de León, I. (2020). Soybean stem canker caused by Diaporthe caulivora; pathogen diversity, colonization process, and plant defense activation. Frontiers in Plant Science, 10, 1733.
DIAPPC-9
Yoder, O.C., 1980. Toxins in pathogenesis.Annual Review of Phytopathology, 18:103-129.
DIAPPC-5
Seed Health Testing Method for Phomosis-Diaporthe Sb 2.1, 2016: National Seed Health System www.seedhealth.org
Search the database