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Microb Ecol

Title:		Interactions between the yeast Ogataea pini and filamentous fungi associated with the western pine beetle
Author(s):		Davis TS; Hofstetter RW; Foster JT; Foote NE; Keim P;
Address:		"School of Forestry, Southwest Forest Science Complex (82), Northern Arizona University, Flagstaff, AZ 86001, USA. tsd3@nau.edu"
Journal Title:		Microb Ecol
Year:		2011
Volume:		20101119
Issue:		3
Page Number:		626 - 634
DOI:		10.1007/s00248-010-9773-8
ISSN/ISBN:		1432-184X (Electronic) 0095-3628 (Linking)
Abstract:		"Ecologically important microbes other than filamentous fungi can be housed within the fungal-transport structures (mycangia) of Dendroctonus bark beetles. The yeast Ogataea pini (Saccharomycetales: Saccharomycetaceae) was isolated from the mycangia of western pine beetle (Dendroctonus brevicomis) populations in northern Arizona (USA) with a frequency of 56%. We performed a series of in vitro assays to test whether volatile organic compounds produced by O. pini affected radial growth rates of mutualistic and antagonistic species of filamentous fungi that are commonly found in association with the beetle including Entomocorticium sp. B, Ophiostoma minus, Beauvaria bassiana, and an Aspergillus sp. We determined the compounds O. pini produced when grown on 2% malt extract agar using a gas chromatography/mass spectrometry (GC/MS) analysis of headspace volatiles. Volatiles produced by O. pini on artificial media significantly enhanced the growth of the mutualistic Entomocorticium sp. B, and inhibited growth of the entomopathogenic fungus B. bassiana. GC/MS revealed that O. pini produced ethanol, carbon disulfide (CS(2)), and Delta-3-carene in headspace. The results of these studies implicate O. pini as an important component in D. brevicomis community ecology, and we introduce multiple hypotheses for future tests of the effects of yeasts in the symbiont assemblages associated with Dendroctonus bark beetles"
Keywords:		Animals Arizona Coleoptera/*microbiology Fungi/*growth & development/isolation & purification/metabolism Gas Chromatography-Mass Spectrometry Saccharomycetales/*growth & development/isolation & purification/metabolism *Symbiosis Volatile Organic Compounds;
Notes:		"MedlineDavis, Thomas S Hofstetter, Richard W Foster, Jeffrey T Foote, Nathaniel E Keim, Paul eng Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. 2010/11/19 Microb Ecol. 2011 Apr; 61(3):626-34. doi: 10.1007/s00248-010-9773-8. Epub 2010 Nov 19"