Pathogenesis-Related Proteins and Polyamines in a Developmental Mutant of Tomato, Epinastic | Zendy

José Marı́a Bellés | Zendy; Pablo Tornero | Zendy; Vicente Conejero | Zendy

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Pathogenesis-Related Proteins and Polyamines in a Developmental Mutant of Tomato, Epinastic

Author(s) -

José Marı́a Bellés,

Pablo Tornero,

Vicente Conejero

Publication year - 1992

Publication title -

plant physiology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 3.554

H-Index - 312

eISSN - 1532-2548

pISSN - 0032-0889

DOI - 10.1104/pp.98.4.1502

Subject(s) - mutant , pathogenesis , biology , pathogenesis related protein , microbiology and biotechnology , genetics , biochemistry , gene , solanaceae , immunology

The polyamine level and the accumulation of pathogenesis-related (PR) proteins were studied in the ethylene overproducing Epinastic (Epi) tomato (Lycopersicon esculentum Mill.) mutant, as compared with its parent, cv VFN8. Neither a decreased putrescine level nor an enhanced production of PR proteins were detected in Epi, contrary to what could be expected from our previous studies (JM Bellés, J Carbonell, V Conejero [1991] Plant Physiol 96: 1053-1059). However, treatment with the ethylene-releasing compound 2-chloroethylphosphonic acid (ethephon) or silver nitrate at high doses induced a decrease in putrescine content and an enhancing of the synthesis of PR proteins in Epi as ascertained by immunoblot analysis using antisera raised against Rutgers tomato PR proteins.

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