Epidemiology and population structure of Xylella fastidiosa, the causal agent of bacterial leaf scorch, among urban trees in the District of Columbia

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dc.contributor.advisorBalci, Yilmazen_US
dc.contributor.authorHarris, Jordan Leeen_US
dc.contributor.departmentPlant Science and Landscape Architecture (PSLA)en_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.date.accessioned2015-06-25T05:30:44Z
dc.date.available2015-06-25T05:30:44Z
dc.date.issued2014en_US
dc.description.abstractA survey of urban trees affected by bacterial leaf scorch caused by Xylella fastidiosa was conducted in the District of Columbia during 2012 and 2013. Disease occurred most frequently with Quercus palustris, Q. rubra, Ulmus americana, and Platanus occidentalis. Eight other symptomatic and five asymptomatic tree species were found infected. The bacterium was also detected on asymptomatic portion of seven tree species. The occurrence of crown dieback was found significantly associated with X. fastidiosa-infection on Q. palustris, Q. rubra, U. americana, and P. occidentalis. A multi-locus sequence typing analysis using 10 housekeeping loci for X. fastidiosa revealed five clonal strains among the urban trees. These strains were host specific, with only one clone being associated with members of the red oak family, American elm, American sycamore, and two clones being associated with mulberry. Long-term management strategies aimed at mitigating the occurrence of bacterial leaf scorch disease are discussed.en_US
dc.identifierhttps://doi.org/10.13016/M2KS5R
dc.identifier.urihttp://hdl.handle.net/1903/16398
dc.language.isoenen_US
dc.subject.pqcontrolledPlant pathologyen_US
dc.subject.pqcontrolledGeneticsen_US
dc.subject.pqcontrolledPlant sciencesen_US
dc.subject.pquncontrolledEpidemiologyen_US
dc.subject.pquncontrolledEvolutionen_US
dc.subject.pquncontrolledLatenten_US
dc.subject.pquncontrolledPhytopathologyen_US
dc.subject.pquncontrolledPopulationen_US
dc.subject.pquncontrolledXylellaen_US
dc.titleEpidemiology and population structure of Xylella fastidiosa, the causal agent of bacterial leaf scorch, among urban trees in the District of Columbiaen_US
dc.typeThesisen_US

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