Japanese Journal of Phytopathology
Online ISSN : 1882-0484
Print ISSN : 0031-9473
ISSN-L : 0031-9473
Selection of an attenuated strain of Japanese yam mosaic virus and its use for protecting yam plants against severe strains
S. FUJIT. IIDAH. NAKAMAE
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2000 Volume 66 Issue 1 Pages 35-39

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Abstract

An attenuated strain of Japanese yam mosaic virus, selected from the fields and referred to as JYMV-M, caused no symptoms on Japanese yam plants throughout the growing season. The purified virus preparation was highly infective, and the virus was easily transmitted by aphids. An RT-PCR-RFLP assay was used in cross-protection tests to discriminate JYMV-M from other severe strains. Pre-inoculation of yam plants with JYMV-M remarkably protected them from infection with severe strains. JYMV-M infection did not affect either the quality and quantity of yam production.

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© The Phytopathological Society of Japan
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