Abstract
MATTHEWS has shown1–3 that applying the guanine analogue 8-azaguanine (5-amino-7-hydroxy-1-V-triazolo (D) pyrimidine) to Nicotiana spp. infected with lucerne mosaic virus and to N. tabacum infected with tobacco mosaic virus delays the onset of symptoms. Over the past two years, we have made similar tests with 8-azaguanine on sugar beet (Beta vulgaris) infected by aphids with beet yellows virus, which, in some years, is the cause of large losses of crop yield in the United Kingdom and other countries. We have observed a delay in the appearance of symptoms of about the same magnitude as those observed with tobacco mosaic virus. Matthews3 obtained delays in the appearance of symptoms with non-persistent viruses transmitted mechanically, but no such delays occurred when the same viruses were transmitted by aphids. Our results show that a delay can be obtained with a persistent, aphid-transmitted virus.
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References
Matthews, R. E. F., J. Gen. Microbiol., 8, 277 (1953).
Matthews, R. E. F., J. Gen. Microbiol., 10, 521 (1954).
Matthews, R. E. F., Nature, 167, 892 (1951).
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RUSSELL, G., TRIM, A. Effects of 8-Azaguanine on Sugar Beet infected with Beet Yellows Virus. Nature 179, 151 (1957). https://doi.org/10.1038/179151a0
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DOI: https://doi.org/10.1038/179151a0
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