Submitted to: Plant Disease
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: February 10, 2006
Publication Date: May 1, 2006
Citation: Hanson, L.E. 2006. Fusarium yellowing of sugar beet caused by Fusarium graminearum from Minnesota and Wyoming. Plant Disease. 90:686. 2006 Interpretive Summary: Fusarium oxysporum is the primary causal agent of Fusarium yellows of sugar beet. However other species have been shown to cause identical yellowing symptoms in some areas. The authors report identification of isolates of Fusarium graminearum from sugar beet from Minnesota and Wyoming that cause yellows symptoms in sugar beet. In 2004 from Minnesota, this species was isolated at the same frequency as F. oxysporum, the primary yellows pathogens in all other states examine to date.
Technical Abstract: Fusarium yellows is an important disease in the western United States, and has recently been reported in other parts of the country. The primary causal agent is Fusarium oxysporum, but other species also can cause yellowing symptoms. In 2004, isolates of Fusarium were obtained from beets with yellows symptoms from Minnesota and Wyoming that included F. graminearum, as well as F. oxysporum. When tested for pathogenicity on sugar beet, F. graminearum isolates caused disease symptoms. This is the first demonstration of pathogenicity of this species on sugar beet in the United States.