title: In vitro translation products of mrnas derived from TMV-infected tobacco exhibiting a hypersensitive response.
abstract: Expression of the hypersensitive response (HSR) to tobacco mosaic virus (TMV) infection in Nicotiana tabacum L. cv. Xanthi-nc (genotype NN) is controlled by the single dominant "N" gene and is temperature sensitive. TMV-infected Xanthi-nc tobacco plants grown at the HSR-restrictive temperature of 31 degrees for 3 days postinoculation show necrosis approximately 8 hr after the temperature shift to the HSR-permissive temperature of 25 degrees . Both polyribosomal and total cytoplasmic poly(A)-containing RNAs were isolated at various times after the temperature shift from leaves of TMV-infected and mock-infected Xanthi-nc tobacco plants and from TMV-infected Turkish Samsun tobacco plants (genotype nn; systemic for TMV infection). The RNAs were translated in vitro and the products were analyzed by polyacrylamide gel electrophoresis. A minimum of four polypeptide translation products specific to both the polyribosomal and total cytoplasmic poly(A)-containing RNAs derived from hypersensitively responding Xanthi-nc were observed.
authors.affiliation: Department of Plant Pathology, Cornell University, Ithaca, New York 14853, USA.
authors.forename: T E
authors.initials: TE
authors.lastname: Smart
authors.forename: D D
authors.initials: DD
authors.lastname: Dunigan
authors.forename: M
authors.initials: M
authors.lastname: Zaitlin