Inhibition of Phytoalexin Synthesis in Arachidonic Acid-Stressed Potato Tissue by Inhibitors of Lipoxygenase and Cyanide-Resistant Respiration | Zendy

David A. Stelzig | Zendy; Robert D. Allen | Zendy; S. K. Bhatia | Zendy

Open Access

Inhibition of Phytoalexin Synthesis in Arachidonic Acid-Stressed Potato Tissue by Inhibitors of Lipoxygenase and Cyanide-Resistant Respiration

Author(s) -

David A. Stelzig,

Robert D. Allen,

S. K. Bhatia

Publication year - 1983

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.72.3.746

Subject(s) - disulfiram , lipoxygenase , salicylhydroxamic acid , phytoalexin , arachidonic acid , chemistry , cyanide , biochemistry , respiration , biology , enzyme , botany , resveratrol , organic chemistry

Arachidonic acid-stressed potato tuber discs synthesized the phytoalexin rishitin. This synthesis was inhibited by salicylhydroxamic acid (SHAM), and to a lesser extent by tetraethylthiuram disulfide (disulfiram). Disulfiram was less effective apparently because it was inactivated in the tuber discs. Disulfiram and SHAM both inhibited cyanide-resistant respiration of whole potato discs and lipoxygenase extracted from these discs. When low disulfiram concentrations were used, the lipoxygenase inhibition was quickly overcome, again because the disulfiram apparently was inactivated by oxidation.

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