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Seed Transmission Rates of Bean pod mottle virus and Soybean mosaic virus in Soybean May Be Affected by Mixed Infection or Expression of the Kunitz Trypsin Inhibitor

Permanent URL:
http://handle.nal.usda.gov/10113/58414
File:
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Abstract:
To facilitate their spread, plant viruses have developed several methods for dispersal including insect and seed transmission. While insect transmission requires virus stability against insect digestion, seed-transmitted viruses have to overcome barriers to entry into embryos. Bean pod mottle virus (BPMV) is transmitted through seed at levels typically below 0.1%, but co-infection with Soybean mosaic virus (SMV) enhanced the seed transmission rate of BPMV in one experiment. In contrast, the rate of SMV seed transmission was not affected by BPMV co-infection. In a second preliminary study, the rate of SMV transmission was lower in an isoline of Williams 82 that contained a null mutation for the Kunitz trypsin inhibitor gene than in Williams 82. In this preliminary study, we observed that factors such as protease inhibitor expression and dual infection may affect the frequency of seed transmission of BPMV and SMV.
Author(s):
Moon Nam , Hanhong Bai , John Hammond , Leslie L. Domier , Young-Nam Youn , Bong-Choon Lee , Hyoun-Sub Lim
Subject(s):
Bean pod mottle virus , Soybean mosaic virus , digestion , disease transmission , gene expression , genes , insects , mixed infection , mutation , plant viruses , seed-borne diseases , trypsin , trypsin inhibitors
Source:
Research in Plant Disease 2013 v.19 no.2
Language:
English
Year:
2013
Collection:
Journal Articles, USDA Authors, Peer-Reviewed
Rights:
Works produced by employees of the U.S. Government as part of their official duties are not copyrighted within the U.S. The content of this document is not copyrighted.