Transmission Efficiency of Cucumber mosaic virus by Aphids Associated with Virus Epidemics in Snap Bean

Gildow, F. E. and Shah, D. A. and Sackett, W. M. and et al, . (2008) Transmission Efficiency of Cucumber mosaic virus by Aphids Associated with Virus Epidemics in Snap Bean. Phytopathology, 98 (11). pp. 1233-1241.

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Cucumber mosaic virus (CMV) is a major component of the virus complex that has become more pronounced in snap bean in the midwestern and northeastern United States since 2001. Multiple-vectortransfer tests were done to estimate the CMV transmission efficiencies (p) of the main aphid species identified in commercial snap bean fields in New York and Pennsylvania. The four most efficient vectors ( pˆ > 0.05) were Aphis gossypii, A. glycines, Acyrthosiphon pisum, and Therioaphis trifolii, which were all significant species in the migratory aphid populations in snap bean. Moderately efficient vectors (0.01 < pˆ < 0.04) were A. spiraecola, A. craccivora, Macrosiphum euphorbiae, and Rhopalosiphum maidis. Poor vectors ( pˆ < 0.01) included A. fabae, Nearctaphis bakeri, and Myzus persicae. Only one species, Sitobion avenae, failed to transmit CMV in replicated tests. Estimates of p were consistent between different clones of the same aphid species and among three different field isolates of CMV tested. Single-vector-transfer test results for a subset of the species supported those obtained via the multiple-vector-transfer approach. Our results are consistent with the notion that A. glycines is a major vector of recent CMV epidemics in snap bean, but that species is only one of several that are involved.

Item Type: Article
Additional Information: This project was supported in part by a grant from the Pennsylvania Department of Agriculture (Grant No. ME 445583). The authors thank M. Bierly, Hanover Foods Inc., Center Hall, PA, for assistance in organizing grower cooperation and facilitating field studies.
Uncontrolled Keywords: empirical Bayesian estimator, group testing, multiple comparisons, soybean aphid, vector-transfer design
Author Affiliation: Department of Plant Pathology, Pennsylvania State University, University Park, PA 16802
Subjects: Plant Protection
Divisions: Other Crops
Depositing User: Mr Siva Shankar
Date Deposited: 19 Jun 2012 11:03
Last Modified: 19 Jun 2012 11:04

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