Vortex-induced dispersal of a plant pathogen by raindrop impact

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dc.contributor.authorKim, Seunghoen
dc.contributor.authorPark, Hyunggonen
dc.contributor.authorGruszewski, Hope A.en
dc.contributor.authorSchmale, David G. IIIen
dc.contributor.authorJung, Sunghwanen
dc.contributor.departmentBiomedical Engineering and Mechanicsen
dc.contributor.departmentSchool of Plant and Environmental Sciencesen
dc.date.accessioned2019-02-27T13:32:34Zen
dc.date.available2019-02-27T13:32:34Zen
dc.date.issued2019en
dc.description.abstractRaindrop impact on infected plants can disperse micron-sized propagules of plant pathogens (e.g., spores of fungi). Little is known about the mechanism of how plant pathogens are liberated and transported due to raindrop impact.We used high-speed photography to observe thousands of dry-dispersed spores of the rust fungus Puccinia triticina being liberated from infected wheat plants following the impact of a single raindrop.We revealed that an air vortex ring was formed during the raindrop impact and carried the dry-dispersed spores away from the surface of the host plant. The maximum height and travel distance of the airborne spores increased with the aid of the air vortex. This unique mechanism of vortex-induced dispersal dynamics was characterized to predict trajectories of spores. Finally, we found that the spores transported by the air vortex can reach beyond the laminar boundary layer of leaves, which would enable the long-distance transport of plant pathogens through the atmosphere.en
dc.description.sponsorshipNational Science Foundationen
dc.description.sponsorshipNSF: CBET-1604424en
dc.description.sponsorshipUS Department of Agricultureen
dc.description.sponsorshipUSDA: 2018-67013-28063en
dc.format.mimetypeapplication/pdfen
dc.identifier.doihttps://doi.org/10.1073/pnas.1820318116en
dc.identifier.urihttp://hdl.handle.net/10919/87860en
dc.language.isoenen
dc.publisherNASen
dc.rightsCreative Commons Attribution-NonCommercial-NoDerivs 3.0 United Statesen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/us/en
dc.subjectplant pathogenen
dc.subjectdry rust sporeen
dc.subjectair vortexen
dc.subjectswirling trajectoryen
dc.subjectdrop impacten
dc.titleVortex-induced dispersal of a plant pathogen by raindrop impacten
dc.title.serialPNASen
dc.typeArticle - Refereeden
dc.type.dcmitypeTexten

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Scholarly Works, School of Plant and Environmental Sciences
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