Vacuum Steam Treatment Eradicates Viable Bretziella fagacearum from Logs Cut from Wilted Quercus rubra

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dc.contributor.authorJuzwik, Jenniferen
dc.contributor.authorYang, Annaen
dc.contributor.authorChen, Zhangjingen
dc.contributor.authorWhite, Marshall S.en
dc.contributor.authorShugrue, Sarahen
dc.contributor.authorMack, Ronalden
dc.contributor.departmentSustainable Biomaterialsen
dc.date.accessioned2020-03-06T13:58:08Zen
dc.date.available2020-03-06T13:58:08Zen
dc.date.issued2019-02en
dc.description.abstractMethyl bromide (MB) fumigation is required for U.S. Quercus log exports due to concern over unintentional spread of Bretziella fagacearum. MB alternatives are needed due to the chemical's ability to damage the earth's ozone layer. Vacuum steam (VS) is an environmentally friendly method that was evaluated for its ability to eradicate B. fagacearum in logs (24 to 61 cm diameter; 1.7 to 1.9 m long) obtained from Q. rubra that had wilted following natural infection (NI) or artificial inoculation (Al). Five replicate loads of two NI and one AI logs were VS-treated at 56 degrees C for 30 min and 60 degrees C for 60 min (at 5.0 cm sapwood depth). Mean frequencies of pretreatment fungus colonization ranged from 12.5 to 24.4% in NI and 29.4 to 45.6% in AI logs based on isolation from wood chips of inner and outer sapwood, respectively, of two disks per log. Frequencies of pathogen DNA detection were similar to those for isolation. No viable pathogen or its DNA were detected in posttreatment logs. Treatment times ranged from 5 to 9 h for the 56 degrees C/30 min schedule and from 8 to 10 h for the 60 degrees C/60 min schedule. Based on these results, VS is worthy of further development as a MB alternative.en
dc.description.adminPublic domain – authored by a U.S. government employeeen
dc.description.notesThis research was partially funded by the USFS FHP Washington Office.en
dc.description.sponsorshipUSFS FHP Washington Officeen
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1094/PDIS-07-18-1252-REen
dc.identifier.eissn1943-7692en
dc.identifier.issn0191-2917en
dc.identifier.issue2en
dc.identifier.pmid30540535en
dc.identifier.urihttp://hdl.handle.net/10919/97222en
dc.identifier.volume103en
dc.language.isoenen
dc.rightsCreative Commons CC0 1.0 Universal Public Domain Dedicationen
dc.rights.urihttp://creativecommons.org/publicdomain/zero/1.0/en
dc.titleVacuum Steam Treatment Eradicates Viable Bretziella fagacearum from Logs Cut from Wilted Quercus rubraen
dc.title.serialPlant Diseaseen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten
dc.type.dcmitypeStillImageen

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