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United States Department of Agriculture

Agricultural Research Service

Title: Distribution of Leaf-Feeding Beetles and Bean Pod Mottle Virus (Bpmv) in Illinois and Transmission of Bpmv in Soybean

Authors
item Mabry, T - UNIV OF ILLINOIS
item Hobbs, H - UNIV OF ILLINOIS
item Steinlage, T - UNIV OF ILLINOIS
item Johnson, B - UNIV OF ILLINOIS
item Pedersen, Wayne - UNIV OF ILLINOIS
item Spencer, J - UNIV OF ILLINOIS
item Levine, E - UNIV OF ILLINOIS
item Isard, S - UNIV OF ILLINOIS
item Domier, Leslie
item Hartman, Glen

Submitted to: Plant Disease
Publication Type: Peer Reviewed Journal
Publication Acceptance Date: April 15, 2003
Publication Date: October 12, 2003
Citation: Mabry, T.R., Hobbs, H.A., Steinlage, T.A., Johnson, B.B., Pedersen, W.L., Spencer, J.L, Levine, E., Isard, S.A., Domier, L.L, Hartman, G.L. 2003. Distribution of leaf-feeding beetles and Bean pod mottle virus (BPMV) in Illinois and transmission of BPMV in soybean. Plant Disease. 87:1221-1225.

Interpretive Summary: Bean pod mottle virus (BPMV) is a beetle-transmitted virus that infects soybean. The virus appeared in the Midwest during the late 1960s and early 1970s. When severe foliar symptoms occur, the virus can cause yield losses of up to 52% depending on the soybean cultivar. The primary vector of BPMV is the bean leaf beetle (BLB). BLB were collected in soybean fields in 58 and 99 Illinois counties surveyed during the 2000 and 2001 growing seasons, respectively. BLB tested positive for BPMV in 37 of 41 counties assayed in 2000. In 2001, BLB tested positive for BPMV in 86 of 99 counties sampled. Another beetle, western corn rootworm (WCR) adults are abundant in soybean fields in east central Illinois. WCR adults tested positive for BPMV in 21 of 21 east central Illinois counties in 2000 and 20 of 24 sampled in 2001. BPMV was detected in soybean plants in 38 of 46 counties sampled in 2000. This is the first report of the distribution of BLB, WCR adults, and BPMV in Illinois. This information is important to soybean producers, consultants, entomologists and plant pathologists.

Technical Abstract: Bean leaf beetles (BLB; Cerotoma trifurcata) were collected in soybean (Glycine max) fields in 58 and 99 Illinois counties surveyed during the 2000 and 2001 growing seasons, respectively. In 2000, BLB counts were highest in the central portion of the state. BLB counts were lower the following year, but were more uniformly distributed throughout the state. BLB tested positive for Bean pod mottle virus (BPMV) in 37 of 41 counties assayed in 2000. In 2001, BLB tested positive for BPMV in 86 of 99 counties sampled. In 2000 and 2001, western corn rootworm (WCR; Diabrotica virgifera virgifera) adults were abundant in soybean fields only in east central Illinois. WCR adults tested positive for BPMV in 21 of 21 east central Illinois counties in 2000 and 20 of 24 sampled in 2001. BPMV was detected in soybean plants in 38 of 46 counties sampled in 2000. Field-collected WCR adults transmitted BPMV to potted soybean plants at low rates either directly from BPMV-infected soybean fields or with prior feeding on BPMV-infected plants. This is the first report of the distribution of BLB, WCR adults, and BPMV in Illinois and of BPMV transmission by adult WCR.

Last Modified: 11/27/2014
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