{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,25]],"date-time":"2026-09-25T16:07:42Z","timestamp":1790352462067,"version":"4.1.0"},"reference-count":105,"publisher":"Oxford University Press (OUP)","license":[{"start":{"date-parts":[[2026,9,3]],"date-time":"2026-09-03T00:00:00Z","timestamp":1788393600000},"content-version":"am","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100000038","name":"Natural Sciences and Engineering Research Council of Canada","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100000038","id-type":"DOI","asserted-by":"publisher"}]},{"name":"Undergraduate Student Research Award"},{"name":"Doctoral Postgraduate Scholarship"},{"DOI":"10.13039\/100002806","name":"Discovery","doi-asserted-by":"publisher","id":[{"id":"10.13039\/100002806","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:sec>\n                    <jats:title>Background and Aims<\/jats:title>\n                    <jats:p>Ecologists have long sought to link within-population dynamics to patterns of species occurrence and persistence across the range. Theoretical models suggest that pathogens have important implications for plant populations and perhaps even limit plant distributions, although more empirical evidence is needed, especially in wild plant populations.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Methods<\/jats:title>\n                    <jats:p>In the field, we characterized the infection dynamics of phytoplasma, a vectored and sterilizing bacterial pathogen, in wild populations of white trillium. We identified the highest molecular matches for the local bacterial strain and putative vectors. We then leveraged iNaturalist data to reveal patterns and potential drivers of phytoplasma occurrence across the range of white trillium.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Key Results<\/jats:title>\n                    <jats:p>Within populations, we found that phytoplasma symptoms were more likely in plots with low host density, where insects occupied a higher proportion of trillium, indicative of an encounter-dilution effect. Leafhoppers in the genus Empoasca were positive for phytoplasma, suggesting that they were a candidate vector of disease between trilliums at our field site. The closest match to our local phytoplasma was related to \u2018Candidatus Phytoplasma pruni\u2019, ribosomal group 16SrIII-F. Phytoplasma symptoms were widely distributed across the range of trillium, even at range edges, and the probability of symptoms was significantly increased by proximity to cropland.<\/jats:p>\n                  <\/jats:sec>\n                  <jats:sec>\n                    <jats:title>Conclusions<\/jats:title>\n                    <jats:p>We studied the impacts of a sterilizing, vector-transmitted pathogen on host plant populations and patterns of infection across the host range. Our results suggest that sap-feeding insects do not occupy all hosts at high host densities, thereby reducing transmission and leading to higher likelihood of finding infection at low host densities, with a higher proportion of host plants infected at low host densities. At a range-wide scale, we found evidence that the pathogen was able to persist across both the core and the edge of host ranges. Thus, negative density-dependent sterilizing pathogens might challenge host populations across the range.<\/jats:p>\n                  <\/jats:sec>","DOI":"10.1093\/aob\/mcag283","type":"journal-article","created":{"date-parts":[[2026,9,3]],"date-time":"2026-09-03T20:00:14Z","timestamp":1788465614000},"source":"Crossref","is-referenced-by-count":0,"title":["The ecological dynamics and consequences of phytoplasma infection in white trillium"],"prefix":"10.1093","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1029-8341","authenticated-orcid":false,"given":"Julia A","family":"Boyle","sequence":"first","affiliation":[{"name":"Department of Ecology and Evolutionary Biology, University of Toronto , 25 Willcocks Street, Toronto, ON M5S 3B2 ,","place":["Canada"]},{"name":"Department of Ecology and Evolutionary Biology, University of Michigan , 1105 N University Avenue, Ann Arbor, MI 48109 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