{"id":1794,"date":"2015-03-04T19:28:32","date_gmt":"2015-03-04T19:28:32","guid":{"rendered":"http:\/\/ppo.puyallup.wsu.edu\/sod\/?page_id=1794"},"modified":"2015-04-12T17:01:09","modified_gmt":"2015-04-13T00:01:09","slug":"pnwhosts","status":"publish","type":"page","link":"https:\/\/ppo.puyallup.wsu.edu\/sod\/education\/native\/pnwhosts\/","title":{"rendered":"WA native plants"},"content":{"rendered":"
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Pacific Northwest Plant Hosts<\/h2>\n<\/header>\n

\u00a0\"026<\/a>A laboratory study using detached leaves of some common broadleaf hosts found in the PNW was undertaken in summer of 2009 and 2010. Leaves were inoculated with a zoospore suspension of an NA1 isolate of P. ramorum<\/em> and lesion area and infection frequency was evaluated. If P. ramorum was recovered from a leaf that did not show a visible lesion, it was considered to be infected asymptomatically. Sporulation potential of foliage of each plant species was also determined.<\/p>\n

In general, the results of this study indicate that western Washington forests are not at high risk for damage caused by P. ramorum<\/em>, based on the host plants tested. However, this is a subset of the many plant species that occur, and there may be a host species that is either extremely susceptible to infection or a prolific sporulator, that was not tested in this study. Plants posing the smallest risk of P. ramorum<\/em> establishment were generally invasives and\/or riparian species. The highest risk plants were commonly found in forested environments. These were fairly susceptible to infection and produced more chlamydospores than sporangia in their foliage.<\/p>\n

Chlamydospore production was higher than sporangia production on many hosts in western Washington forests that were examined in this study. In other systems, such as bay laurel (Umbellularia californica<\/em>) in California, and Rhododendron ponticum<\/em> in the UK, P. ramorum<\/em> outbreaks are driven by high concentrations of sporangia produced on foliage of these hosts. None of the Washington hosts tested produced as many sporangia as U. californica<\/em>. Chlamydospores are a means by which P. ramorum<\/em> can persist on a site in soil and decaying foliage, but will probably not produce large amounts of inoculum unless they germinate directly into sporangia, which can occur in flooded soils.<\/p>\n

Back to Native Plants<\/a><\/p>\n<\/p><\/div>\n<\/section>\n

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Contact: Gary Chastagner<\/a>, 253-445-4528 | WSU Puyallup Research & Extension Center<\/a>, 2606 West Pioneer, Puyallup, WA, 98371-4998 USA<\/span>
\nLast updated January 2, 2013<\/span><\/p>\n<\/p><\/div>\n<\/section>\n","protected":false},"excerpt":{"rendered":"

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Pacific Northwest Plant Hosts<\/h2>\n

\u00a0\"026<\/a>A laboratory study using detached leaves of some common … » More …<\/span><\/a><\/p>\n","protected":false},"author":680,"featured_media":0,"parent":1787,"menu_order":2,"comment_status":"closed","ping_status":"closed","template":"template-builder.php","meta":[],"wsuwp_university_location":[34,55,8,49],"wsuwp_university_org":[],"_links":{"self":[{"href":"https:\/\/ppo.puyallup.wsu.edu\/sod\/wp-json\/wp\/v2\/pages\/1794"}],"collection":[{"href":"https:\/\/ppo.puyallup.wsu.edu\/sod\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/ppo.puyallup.wsu.edu\/sod\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/ppo.puyallup.wsu.edu\/sod\/wp-json\/wp\/v2\/users\/680"}],"replies":[{"embeddable":true,"href":"https:\/\/ppo.puyallup.wsu.edu\/sod\/wp-json\/wp\/v2\/comments?post=1794"}],"version-history":[{"count":2,"href":"https:\/\/ppo.puyallup.wsu.edu\/sod\/wp-json\/wp\/v2\/pages\/1794\/revisions"}],"predecessor-version":[{"id":2673,"href":"https:\/\/ppo.puyallup.wsu.edu\/sod\/wp-json\/wp\/v2\/pages\/1794\/revisions\/2673"}],"up":[{"embeddable":true,"href":"https:\/\/ppo.puyallup.wsu.edu\/sod\/wp-json\/wp\/v2\/pages\/1787"}],"wp:attachment":[{"href":"https:\/\/ppo.puyallup.wsu.edu\/sod\/wp-json\/wp\/v2\/media?parent=1794"}],"wp:term":[{"taxonomy":"wsuwp_university_location","embeddable":true,"href":"https:\/\/ppo.puyallup.wsu.edu\/sod\/wp-json\/wp\/v2\/wsuwp_university_location?post=1794"},{"taxonomy":"wsuwp_university_org","embeddable":true,"href":"https:\/\/ppo.puyallup.wsu.edu\/sod\/wp-json\/wp\/v2\/wsuwp_university_org?post=1794"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}