Biological studies of shiitake logs and associated mycoflora in the Virginia highlands

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dc.contributor.authorGuevara-Guerrero, Gonzaloen
dc.contributor.committeechairStipes, R. Jayen
dc.contributor.committeememberPalmer, John G.en
dc.contributor.committeememberSmith, David Williamen
dc.contributor.departmentPlant Pathologyen
dc.date.accessioned2014-03-14T21:42:42Zen
dc.date.adate2009-08-14en
dc.date.available2014-03-14T21:42:42Zen
dc.date.issued1991-12-05en
dc.date.rdate2009-08-14en
dc.date.sdate2009-08-14en
dc.description.abstractShiitake growers in Virginia are experiencing considerable diminution of the fruiting life of oak logs, due primarily to Ascomycetous, competing, wood-rotting, contaminating "weed fungi" that either invade the logs after trees are felled or are present in tree tissues before felling. We surveyed several shiitake farms, and, although the fungal flora differed among them, the predominant colonizing fungi were identified as Graphostroma platystoma (also identified as Diatrype stygma), Eutypa spinosa and Slereum aff. complicatum. Other less frequently observed fungi were Stereum ostrea, Schizophyllum commune, Hymenochaete sp., Poria sp., Hypoxylon atropunctatum and Hypoxylon punctulatum. Site and means of invasion (colonization) of these "weed fungi" were studied by monitoring endophytic fungal populations in stressed and non-stressed oak trees in the Jefferson National Forest Montgomery County, Virginia. Twenty-six samples from Poverty Creek (non-stressed) and 23 from Brush Mountain (stressed) were studied. Fifty percent of the samples from the non-stressed were sterile, 23% yielded Paecilomyces variota., and 27% were colonized by other fungi. On the other hand, 100% of the samples from stressed trees (Brush Mountain) were colonized by fungi; 74% yielded P. variotii and 26% by other fungi. Thirty samples from a pin oak (Quercus paluslris) plot at Virginia Tech (non-stressed) were 74% sterile, 16% colonized by an unidentified yeast, and 10% colonized by other unknown fungi.en
dc.description.degreeMaster of Scienceen
dc.format.extentvii, 75 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-08142009-040430en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-08142009-040430/en
dc.identifier.urihttp://hdl.handle.net/10919/44227en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1991.G848.pdfen
dc.relation.isformatofOCLC# 29040731en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1991.G848en
dc.subject.lcshMycology -- Virginia -- Montgomery Countyen
dc.subject.lcshShiitake -- Virginia -- Montgomery Countyen
dc.titleBiological studies of shiitake logs and associated mycoflora in the Virginia highlandsen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplinePlant Pathologyen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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