Abstract

Fusigen, a cyclic triester possessing three hydroxamic acid functions [2], is synthesized by many fungi grown under iron-deficient conditions [3,4]. Labelled 6-N-hydroxyornithine and cis-fusarinine are readily incorporated into fusigen in washed mycelia from Fusarium cubense and Penicillium chrysogenum [ 11. In a previous publication we reported the detection and partial characterization of rhodotorulic acid synthetase from extracts of Rhodotoncla glutinis [5]. Following a similar experimental procedure, we succeeded in finding enzymatic activity for fusigen synthesis in cell-free extracts from Fusarium cubense.

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