Structure of tobacco genes encoding pathogenesis-related proteins from the PR-1 group | Zendy

Ben J. C. Cornelissen | Zendy; Jeannine Horowitz | Zendy; J.A.L. van Kan | Zendy; Robert B. Goldberg | Zendy; John F. Bol | Zendy

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Structure of tobacco genes encoding pathogenesis-related proteins from the PR-1 group

Author(s) -

Ben J. C. Cornelissen,

Jeannine Horowitz,

J.A.L. van Kan,

Robert B. Goldberg,

John F. Bol

Publication year - 1987

Publication title -

nucleic acids research

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 9.008

H-Index - 537

eISSN - 1362-4954

pISSN - 0305-1048

DOI - 10.1093/nar/15.17.6799

Subject(s) - biology , gene , genetics , pathogenesis , group (periodic table) , encoding (memory) , computational biology , immunology , chemistry , organic chemistry , neuroscience

Infection of Samsun NN tobacco with tobacco mosaic virus (TMV) was found to induce the synthesis of mRNA encoding a basic protein with a 67% amino acid sequence homology to the known acidic pathogenesis-related (PR) proteins 1a, 1b and 1c. By Southern blot hybridization it was shown that the tobacco genome contains at least eight genes for acidic PR-1 proteins and a similar number of genes encoding the basic homologues. Clones corresponding to three of the genes for acidic PR-1 proteins were isolated from a genomic library of Samsun NN tobacco. The nucleotide sequence of these genes and their flanking sequences were determined. One clone was found to correspond to the PR-1a gene; the two other clones do not correspond to known TMV-induced PR-1 mRNA's and may represent silent genes. Compared to the PR-1a gene, these genes contain an insertion or deletion in the putative promoter region and mutations affecting the PR-1 reading frame.

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