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United States Department of Agriculture

Agricultural Research Service

Title: Aphanomyces Root and Hypocotyl Rot

Authors
item Pfender, W. - KANSAS STATE UNIVERSITY
item HANSON, LINDA

Submitted to: Compendium of Bean Diseases, 2nd Edition
Publication Type: Other
Publication Acceptance Date: November 1, 2002
Publication Date: March 30, 2005
Citation: Pfender, W.F., revised by Hanson, L.E. Aphanomyces Root and Hypocotyl Rot. pp. 10-12. Compendium of Bean Diseases, 2nd Edition. H.F. Schwartz, J.R. Steadman, R. Hall and R.L. Foster, eds. APS Press, St. Paul, MN. 2005.

Interpretive Summary: Aphanomyces Root and Hypocotyl Rot Prepared by W. F. Pfender, Revised by L.E.Hanson While Aphanomyces euteiches was known to infect beans under greenhouse conditions as early as the 1960s, it wasn't until 1979 that A. euteiches was isolated from beans in the field. In 1979 a strain designated A. euteiches f. sp. phaseoli, capable of causing severe root and hypocotyl rot in beans in the field, was discovered in central Wisconsin. A. eutiches f. sp. phaseoli has been reported in Wisconsin and New York State, and Aphanomyces spp. causing root rot on bean also have been reported in Australia. Since Aphanomyces spp. generally are associated with other pathogenic fungi, they may be obscured on isolation plates and undetected in other areas.

Technical Abstract: Aphanomyces Root and Hypocotyl Rot Prepared by W. F. Pfender, Revised by L.E.Hanson While Aphanomyces euteiches was known to infect beans under greenhouse conditions as early as the 1960s, it wasn't until 1979 that A. euteiches was isolated from beans in the field. In 1979 a strain designated A. euteiches f. sp. phaseoli, capable of causing severe root and hypocotyl rot in beans in the field, was discovered in central Wisconsin. A. eutiches f. sp. phaseoli has been reported in Wisconsin and New York State, and Aphanomyces spp. causing root rot on bean also have been reported in Australia. Since Aphanomyces spp. generally are associated with other pathogenic fungi, they may be obscured on isolation plates and undetected in other areas.

Last Modified: 9/10/2014
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