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  • Title: cDNA cloning of six mRNAs induced by TMV infection of tobacco and a characterization of their translation products.
    Author: Hooft van Huijsduijnen RA, van Loon LC, Bol JF.
    Journal: EMBO J; 1986 Sep; 5(9):2057-61. PubMed ID: 16453701.
    Abstract:
    A cDNA library was constructed to 10-15 S poly(A) RNA from tobacco mosaic virus (MV)-infected Samsun NN tobacco.By differential colony hybridization of 1400 transformants,32 clones were obtained corresponding to TMV-inducible tobacco mRNAs. These clones were subdivided into six clusters on the basis of cross-hybridization of the inserts. By Northern blot hybridization it was shown that three of the corresponding mRNAs were strongly induced by spraying tobacco plants with salicylic acid, whereas one mRNA was weakly induced by this treatment. All mRNAs were systemically induced in plants in which only the lower leaves were locally infected by TMV. Hybrid-selected translation was performed, using six clones representing one cluster each, followed by immunoprecipitation using an antiserum to purified pathogenesis-related (PR) proteins. Four clones yielded precipitable translation products. One of these clones represented a cluster of PR-1 clones, another clone encoded the thaumatin-like (TL) protein of tobacco which may correspond to PR-P or -Q.
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