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Fungal sulphur oxidation: Effect of carbon source and growth stimulation by thiosulphate

Authors
Journal
Transactions of the British Mycological Society
0007-1536
Publisher
Elsevier
Publication Date
Volume
88
Issue
2
Identifiers
DOI: 10.1016/s0007-1536(87)80217-6

Abstract

Elemental sulphur oxidation by Aspergillus niger and Trichoderma harzianum using acetate, sugars and amino acids as carbon sources was determined. Glucose and sucrose were the best carbon sources for sulphate production by A. niger while amino acids supported the production of larger amounts of sulphate by T. harzianum. Both fungi used acetate as sole carbon source to support the oxidation of elemental sulphur to thiosulphate and sulphate. Mycelial dry weight yield increased when fungi were grown on thiosulphate with low (0.1 % (w/v) C as sucrose), but not high (1.2% (w/v) C) carbon concentrations, suggesting that these fungi may grow chemolithoheterotrophically, using both thiosulphate and sucrose as energy sources.

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