Differentiation of Bean pod mottle virus isolates based upon host symptoms |
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Authors: | Leandro A Mozzoni Pengyin Chen Rose C Gergerich |
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Institution: | (1) Department of Crop, Soil, and Environmental Sciences, University of Arkansas, Fayetteville, AR 72701, USA;(2) Department of Plant Pathology, University of Arkansas, Fayetteville, AR 72701, USA |
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Abstract: | Accessions from Glycine, Phaseolus, and Vigna genera were screened for their reactions to different subgroups of isolates of Bean pod mottle virus (BPMV) in order to establish a differential host system. Screening results indicated that the BPMV isolates differed in pathogenic
aggressiveness but not in virulence. No major resistance genes were found in soybean (Glycine max) or G. soja since all screened accessions showed mosaic or necrotic symptoms to BPMV inoculation. However, these accessions expressed
differences in severity of symptoms when challenged by various BPMV isolates. The inoculation of G. tomentella accessions did not result in mosaic symptoms, and some accessions did not support systemic infection of some of the isolates.
Resistance, presented as a hypersensitive reaction, was observed in some of Phaseolus and Vigna genotypes, and resistant response or susceptibility was stable to all the isolates used in the screening. In conclusion,
the selected G. soja genotypes PI 407019, PI 464889A, and PI 464928, and ‘Amsoy 71’ soybean may help to separate severe (reassortant) from mild
isolates of BPMV based upon their phenotypic reactions. |
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Keywords: | BPMV Glycine Necrosis Phaseolus Resistance Vigna Virus |
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