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Einfluß von Acetat auf die Bildung des Phytoeffektors Tentoxin durch Alternaria alternata (Fr.) Keissler
Author(s) -
Hänel I.,
Liebermann B.,
Brückner B.,
Tröger R.
Publication year - 1985
Publication title -
journal of basic microbiology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.58
H-Index - 54
eISSN - 1521-4028
pISSN - 0233-111X
DOI - 10.1002/jobm.3620250603
Subject(s) - alternaria alternata , biosynthesis , chemistry , cofactor , phosphoenolpyruvate carboxykinase , biochemistry , enzyme , biology , botany
The effect of the cosubstrate acetate on the formation of the phytotoxic substance tentoxin by Alternaria alternata (fr.) Keissler was investigated. Acetate was taken up and metabolized during growth. The added acetate stimulated considerably the biosynthesis of tentoxin depending on its concentration and time of introduction. There was an increased incorporation of (U‐ 14 C)‐glucose into the toxin molecule in the presence of acetate in the medium. The results indicate an induction of the biosynthesis of tentoxin by the precursor acetate, probably mediated through the accumulation of the glycolytic intermediates pyruvate and phosphoenolpyruvate.