<?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%">Yakabe, L. E.</style></author><author><style face="normal" font="default" size="100%">Blomquist, C. L.</style></author><author><style face="normal" font="default" size="100%">Thomas, S. L.</style></author><author><style face="normal" font="default" size="100%">MacDonald, J. D.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Identification and Frequency of Phytophthora Species Associated with Foliar Diseases in California Ornamental Nurseries</style></title><secondary-title><style face="normal" font="default" size="100%">Plant Disease</style></secondary-title><short-title><style face="normal" font="default" size="100%">Plant Disease</style></short-title></titles><dates><year><style  face="normal" font="default" size="100%">2009</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan-09-2009</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://apsjournals.apsnet.org/doi/abs/10.1094/PDIS-93-9-0883</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">93</style></volume><pages><style face="normal" font="default" size="100%">883 - 890</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Numerous ornamental nurseries in 32 California counties were surveyed for leaf spots as part of the California Department of Food and Agriculture mandated surveys targeting &lt;em&gt;Phytophthora ramorum&lt;/em&gt;. Tissue collected during the 2005 and 2006 surveys was initially screened by a &lt;em&gt;Phytophthora&lt;/em&gt;-specific enzyme-linked immunosorbent assay. All positives samples were further tested using polymerase chain reaction to determine if &lt;em&gt;P. ramorum&lt;/em&gt; was present. &lt;em&gt;P. ramorum&lt;/em&gt; was detected in 1% of the total number of samples taken during the surveys. A total of 377 isolates were identified as species of &lt;em&gt;Phytophthora&lt;/em&gt; other than &lt;em&gt;P. ramorum&lt;/em&gt;, and their identity was determined by internal transcriber spacer (ITS) sequences. Subsets of the putative ITS-species were further verified using accepted morphological characters. Thirteen species of &lt;em&gt;Phytophthora&lt;/em&gt; were found: &lt;em&gt;P. cactorum, P. cambivora, P. citricola, P. citrophthora, P. cryptogea, P. foliorum, P. gonapodyides, P. hibernalis, P. nemorosa, P&lt;/em&gt;. ‘Pgchlamydo’, &lt;em&gt;P. pseudosyringae, P. syringae&lt;/em&gt;, and &lt;em&gt;P. tropicalis. P. syringae&lt;/em&gt; and &lt;em&gt;P. citricola&lt;/em&gt; made up 55% of the total number of isolates. Species thought to be strictly forest pathogens, &lt;em&gt;P. nemorosa&lt;/em&gt; and &lt;em&gt;P. pseudosyringae&lt;/em&gt;, each made up less than 4% of the isolates. To test pathogenicity of acquired isolates, subsets of different species of &lt;em&gt;Phytophthora&lt;/em&gt; were inoculated onto leaves of selected host plant genera. Of the 66 pathogen–host genera combinations tested, 44 resulted in lesion formation. Disease symptoms appeared as dark, water-soaked lesions with irregular margins and were similar among &lt;em&gt;Phytophthora&lt;/em&gt; species.&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">9</style></issue></record></records></xml>