Toxicity of terpenes to spores and mycelium op Penicillium digitatum

W.A.M. Wolken, J. Tramper, M.J. van der Werf

Research output: Contribution to journalArticleAcademicpeer-review

27 Citations (Scopus)


Spores, although often considered metabolically inert, catalyze a variety of reactions. The use of spores instead of mycelium for bioconversions has several advantages. In this paper, we describe the difference in susceptibility of mycelium and spores against toxic substrates and products. A higher resistance of spores toward the toxic effects of bioconversion substrates and products is an advantage that has not been studied in detail until now. This paper shows that spores of Penicillium digitatum ATCC 201167 are on average over 2.5 times more resistant than mycelium toward the toxicity of substrates, intermediates, and products of the geraniol bioconversion pathway. Furthermore, the higher resistance of spores to citral was shown as an advantage in its biotransformation by P. digitatum. Using three different approaches the toxicity of the compounds were tested. The order of toxicity toward P. digitatum was, starting with the most toxic, citral > nerol/geraniol > geranic acid > methylheptenone acetaldehyde.
Original languageEnglish
Pages (from-to)685-690
JournalBiotechnology and Bioengineering
Issue number6
Publication statusPublished - 2002

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