<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Fichtner, E. J.</style></author><author><style face="normal" font="default" size="100%">D. M. Rizzo</style></author><author><style face="normal" font="default" size="100%">Kirk, S.A.</style></author><author><style face="normal" font="default" size="100%">Webber, JF</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Root infections may challenge management of invasive Phytophthora spp. in U.K. woodlands</style></title><secondary-title><style face="normal" font="default" size="100%">Plant Disease</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2011</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://apsjournals.apsnet.org/doi/abs/10.1094/PDIS-03-10-0236</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">1</style></number><volume><style face="normal" font="default" size="100%">95</style></volume><pages><style face="normal" font="default" size="100%">13-18</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Because sporulation of &lt;em&gt;Phytophthora ramorum&lt;/em&gt; and &lt;em&gt;P. kernoviae&lt;/em&gt; on &lt;em&gt;Rhododendron ponticum&lt;/em&gt;, an invasive plant, serves as primary inoculum for trunk infections on trees, &lt;em&gt;R. ponticum&lt;/em&gt; clearance from pathogen-infested woodlands is pivotal to inoculum management. The efficacy of clearance for long-term disease management is unknown, in part due to lack of knowledge of pathogen persistence in roots and emerging seedlings. The main objectives of this work were to (i) investigate whether both pathogens infect &lt;em&gt;R. ponticum&lt;/em&gt; roots, (ii) determine the potential for residual inoculum of &lt;em&gt;P. kernoviae&lt;/em&gt; to infect &lt;em&gt;R. ponticum&lt;/em&gt; seedlings in cleared woodlands, and (iii) assess potential for &lt;em&gt;R. ponticum&lt;/em&gt; roots to support survival and transmission of &lt;em&gt;P. kernoviae&lt;/em&gt;. Roots of &lt;em&gt;R. ponticum&lt;/em&gt; were collected from both unmanaged and cleared woodlands and assessed for pathogen recovery. Both &lt;em&gt;P. ramorum&lt;/em&gt; and &lt;em&gt;P. kernoviae&lt;/em&gt; were recovered from asymptomatic roots of &lt;em&gt;R. ponticum&lt;/em&gt; in unmanaged woodlands, and &lt;em&gt;P. kernoviae&lt;/em&gt; was recovered from asymptomatic roots from seedlings in cleared woodland. Oospore production of &lt;em&gt;P. kernoviae&lt;/em&gt; was observed in naturally infected &lt;em&gt;R. ponticum&lt;/em&gt; foliage and in inoculated roots. Roots also supported &lt;em&gt;P. kernoviae&lt;/em&gt; sporangia production. The results of this study suggest that post-clearance management of &lt;em&gt;R. ponticum&lt;/em&gt; regrowth is necessary for long-term inoculum management in invaded woodlands.&lt;/p&gt;</style></abstract></record></records></xml>