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  • Title: Mutants of tobacco mosaic virus with temperature-sensitive coat proteins induce heat shock response in tobacco leaves.
    Author: Jockusch H, Wiegand C, Mersch B, Rajes D.
    Journal: Mol Plant Microbe Interact; 2001 Jul; 14(7):914-7. PubMed ID: 11437266.
    Abstract:
    We analyzed, with respect to heat shock proteins (HSPs), systemically reacting tobacco leaves inoculated with Tobacco mosaic virus (TMV), wild-type vulgare, and temperature-sensitive coat protein (CP) mutants Ni 118 (P20L) and flavum (D19A), kept at 23 or 30 degrees C. HSP18 and HSP70 mRNAs and proteins were induced with temperature-sensitive CP mutants after 1 to 2 days at 30 degrees C. After 4 to 6 days, HSP70 was also induced at 23 degrees C. The induction of HSPs paralleled the amount of insoluble TMV CP in leaf extracts, indicating that denatured TMV CP by itself induces a heat-shock response.
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