Oxygenated monoterpenes produced by yeasts,isolated fromIps typographus (Coleoptera: Scolytidae) and grown in phloem medium |
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Authors: | Anders Leufvén Gunnar Bergström Enevold Falsen |
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Affiliation: | (1) Department of Chemical Ecology, University of Göteborg, Box 33031, 40033 Göteborg, Sweden;(2) CCUG, Department of Clinical Bacteriology, University of Göteborg, Guldhedsgatan 10A, 413 46 Göteborg, Sweden |
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Abstract: | When yeasts associated withIps typographus beetles were grown in an aqueous phloem medium for two days, the main oxygenated monoterpenes produced were -terpineol and borneol. Terpinene-4-ol, myrtenol, andtrans-pinocarveol were also found but in lesser amounts. Of the six strains used in this study,Hansenula capsulata andCandida nitratophila produced the largest amounts of oxygenated monoterpenes. Addition of -pinene to the phloem medium generally reduced the amounts of oxygenated monoterpenes, probably because this substance is toxic to all tested yeast species. OurCandida diddensii strain seemed to be particularly sensitive to -pinene. None of the yeast strains producedcis-verbenol,trans-verbenol, or verbenone from the medium or from added -pinene.This study was made within the project Odour Signals for Control of Pest Insects.![rdquo](/content/wk4t08l49712h752/xxlarge8221.gif) |
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Keywords: | Microbial transformations microorganisms yeasts bark beetle Coleoptera Scolytidae Ips typographus oxygenated monoterpenes /content/wk4t08l49712h752/xxlarge945.gif" alt=" agr" align=" BASELINE" BORDER=" 0" >-terpineol bomeol |
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