{"id":2770,"date":"2015-06-18T12:55:48","date_gmt":"2015-06-18T19:55:48","guid":{"rendered":"http:\/\/ppo.puyallup.wsu.edu\/sod\/?p=2770"},"modified":"2015-06-18T12:59:17","modified_gmt":"2015-06-18T19:59:17","slug":"new-pr-hosts-found","status":"publish","type":"post","link":"https:\/\/ppo.puyallup.wsu.edu\/sod\/2015\/06\/18\/new-pr-hosts-found\/","title":{"rendered":"New Pr hosts found"},"content":{"rendered":"<p><span style=\"font-family: Arial,Helvetica,sans-serif;font-size: small\"><strong>Five new <em>Phytophthora ramorum<\/em> hosts were detected during a rare plant survey in February on Marin County Municipal Water District property when unusual <em>Arctostaphylos<\/em> symptoms were identified.<\/strong> Samples submitted to the California Department of Food and Agriculture (CDFA) Plant Pest Diagnostics Lab tested negative for root pathogens, but the leaves and branches tested positive for <em>P. ramorum<\/em>. Follow-up official samples were collected for testing by CDFA scientists, which resulted in the identification of <a href=\"http:\/\/www.suddenoakdeath.org\/library\/photos\/plant-symptom-photos\/\" target=\"_blank\">five new <em>P. ramorum<\/em> hosts<\/a>: <em>Arctostaphylos virgat<\/em><em>a<\/em>, <em>Arctostaphylos glandulosa<\/em>, chinquapin (<em>Chrysolepsis chrysophylla<\/em>), blackberry (<em>Rubus ursinus<\/em>), and chaparral pea (<em>Pickeringia <\/em><em>montana<\/em>). <em>Arctostaphylos virgata <\/em>and <em>Arctostaphylos glandulosa <\/em>symptoms include leaf spots and necrosis, petiole dieback, stem lesions and cankers, and tip dieback. Many plants of both species were showing symptoms. Chinquapin (<em>Chrysolepsis chrysophylla<\/em>) symptoms include canopy dieback, leaf spots, and vascular discoloration. Many chinquapin were showing symptoms; two trees were confirmed positive. Blackberry (<em>Rubus ursinus<\/em>) symptoms include leaf spots and stem lesions. Chaparral pea (<em>Pickeringia <\/em><em>montana<\/em>) symptoms include leaf spots, stem lesions, and thorn dieback. CDFA scientists are in the process of obtaining healthy container plants of each host species to confirm pathogenicity. A follow-up site visit to the water district is planned for July to observe disease progression on these hosts.<\/span><\/p>\n<p><span style=\"font-family: Arial,Helvetica,sans-serif;font-size: small\"><strong><em>Vaccinium parvifolium<\/em> (red huckleberry) was found <em>P. ramorum<\/em> positive for the first time from two samples taken at a Lewis County, WA interstate shipping nursery during their 2015 spring Federal <em>P. ramorum<\/em> Certification Program survey.<\/strong> The Lewis County facility was also positive in 2014 and had undergone a CCPA as well as extensive mitigation activities. A new CCPA has been conducted to determine possible ways the pathogen has continued to infect plant material; additional mitigation efforts will completed in 2015. As a result of the new host confirmation, <em>Vaccinium parvifolium<\/em> will be added to the federally recognized <em>P. ramorum<\/em> host and associated host list.<\/span><\/p>\n<p>For more information on this and other news items, read the<a class=\"tracked\" href=\"http:\/\/www.suddenoakdeath.org\/news-and-events\/current-newsletter\/\"> COMTF monthly newsletter.<\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p><strong>Five new <em>Phytophthora ramorum<\/em> hosts were detected during a rare plant survey in February on Marin County Municipal Water District property when unusual <em>Arctostaphylos<\/em> symptoms were identified.<\/strong> Samples submitted to &#8230; <a href=\"https:\/\/ppo.puyallup.wsu.edu\/sod\/2015\/06\/18\/new-pr-hosts-found\/\" class=\"more-link\"><span class=\"more-default\">&raquo; More &#8230;<\/span><\/a><\/p>\n","protected":false},"author":1130,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[1],"tags":[],"wsuwp_university_location":[],"wsuwp_university_org":[],"_links":{"self":[{"href":"https:\/\/ppo.puyallup.wsu.edu\/sod\/wp-json\/wp\/v2\/posts\/2770"}],"collection":[{"href":"https:\/\/ppo.puyallup.wsu.edu\/sod\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/ppo.puyallup.wsu.edu\/sod\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/ppo.puyallup.wsu.edu\/sod\/wp-json\/wp\/v2\/users\/1130"}],"replies":[{"embeddable":true,"href":"https:\/\/ppo.puyallup.wsu.edu\/sod\/wp-json\/wp\/v2\/comments?post=2770"}],"version-history":[{"count":2,"href":"https:\/\/ppo.puyallup.wsu.edu\/sod\/wp-json\/wp\/v2\/posts\/2770\/revisions"}],"predecessor-version":[{"id":2774,"href":"https:\/\/ppo.puyallup.wsu.edu\/sod\/wp-json\/wp\/v2\/posts\/2770\/revisions\/2774"}],"wp:attachment":[{"href":"https:\/\/ppo.puyallup.wsu.edu\/sod\/wp-json\/wp\/v2\/media?parent=2770"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/ppo.puyallup.wsu.edu\/sod\/wp-json\/wp\/v2\/categories?post=2770"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/ppo.puyallup.wsu.edu\/sod\/wp-json\/wp\/v2\/tags?post=2770"},{"taxonomy":"wsuwp_university_location","embeddable":true,"href":"https:\/\/ppo.puyallup.wsu.edu\/sod\/wp-json\/wp\/v2\/wsuwp_university_location?post=2770"},{"taxonomy":"wsuwp_university_org","embeddable":true,"href":"https:\/\/ppo.puyallup.wsu.edu\/sod\/wp-json\/wp\/v2\/wsuwp_university_org?post=2770"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}