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Nematospora coryli (yeast spot of bean )
Nematospora coryli
yeast spot of bean
Eremothecium coryli
Worldwide
Widespread
2022-12-01
fungus
Korea
bean, soybean
NMATCO
Requires stink bug feeding to transmit fungus to seeds. (NMATCO-3)
2 Known Hosts
Glycine max
soybean
Yes
NMATCO-1,NMATCO-3
Seed infection and transmission has been established and accepted. Though no data was found regarding the importance of seed inoculum in disease development. Seed infection does affect seed quality.
Yes
Agar plating
Agar plating was used in research to determine seed infection. This method has not been validated or standardized.
NMATCO-1
Use of clean seed
Insecticides to control stink bugs
NMATCO-3
NMATCO-1
Jordan, EG, Manandhar, JB, Thapliyal, PN, and Sinclair, JB. 1988. Soybean seed quality of 16 cultivars and four maturity groups. in Illinois. Plant Dis. 72:64- 67
NMATCO-3
Kulik MM and Sinclair JB. 2015. Yeast Spot of Pods and Seeds. In: Compendium of Soybean Diseases and Pests, Fifth Edition G. L. Hartman, J. C. Rupe, E. J. Sikora, L. L. Domier, J. A. Davis and K. L. Steffey, Eds. The APS Press. St. Paul, MN.
Phaseolus vulgaris
common bean
No
NMATCO-4,RICH ISTA
Pathway not proven. RICH ISTA, lists this pathogen as seed borne but indicates the fungus is only a common invader of insect punctured seed and not a seed borne pathogen. Primarily a seed quality issue and it is unclear from the literature of the importance of seed inoculum in transmission.
Use clean seed
The disease is managed additionally with weed control and insect control.
NMATCO-4
NMATCO-4
Schwartz, HF. 2005. Yeast Spot. In, Compendium of Bean Diseases, 2nd ed. Schwartz HF, Steadman JR and Hall R., eds. The American Phytopathological Society Press, St. Paul MN.
RICH ISTA
Richardson, MJ. 1990. An Annotated List of Seedborne Diseases. International Seed Testing Association, Zurich Switzerland.
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