1983•Biologia PlantarumRequires access

Virus-induced virus inhibitors from systemically virus-infected plants

Christine Wetzler, Gottfried Schuster

Abstract

After infection of Nicotiana tabacum cv. Samsun with tobacco mosaic virus (TMV) crude extracts from dark-green spots of upper leaves had a more strongly marked inhibitory effect upon TMV added in vitro than crude extracts from the surrounding light-green tissue. Likewise, crude extracts from leaves of Nicotiana tabacum cv. Samsun showing recovery after infection with tobacco ringspot virus (TRV) were seen to have a marked inhibitory effect on TMV added in vitro . The results obtained suggest that virus inhibitors are produced after virus infections not only in hypersensitive hosts but also in systemic hosts. Necrotizing processes are not an indispensable prerequisite of the production of virus-induced virus inhibitors.

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Key concepts: Tobacco mosaic virus, Virus, Virology, Biology, Nicotiana tabacum, In vitro, Microbiology, Gene