Virus Resistance Induced with Mannan Sulphates in Hypersensitive Host Plants |
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| Authors: | A G Kovalenko T D Grabina L V Kolesnik L F Didenko L T Oleschenko Z M Olevinskaya T A Telegeeva |
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| Institution: | Zabolotny Institute of Microbiology and Virology of the Ukrainian Academy of Sciences, Kiev, Ukraine |
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| Abstract: | Mannan sulphates (MS), obtained by sulphatation of extracellular linear mannan (LM) from Rhodotorula rubra, induced resistance to tobacco mosaic virus (TMV) in hypersensitive plants, retained in isolated protoplasts. MS-induced resistance in tobacco is accompanied by a marked increase of lytic processes in cells and a decrease of total (acidic and alkaline) protein content. In addition to this, new protein components, including PR-proteins and antiviral substances, of the inhibitor of virus replication (IVR) type, appeared in treated plant tissues. MS-induced resistance resembles localized resistance induced by TMV in hypersensitive tobacco plants and could serve as an experimental model for study of the latter. |
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