<?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%">McConnell, M. E.</style></author><author><style face="normal" font="default" size="100%">Balci, Y.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Phytophthora cinnamomi as a Contributor to White Oak Decline in Mid-Atlantic United States Forests</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%">2014</style></year><pub-dates><date><style  face="normal" font="default" size="100%">Jan-03-2014</style></date></pub-dates></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://apsjournals.apsnet.org/doi/abs/10.1094/PDIS-06-13-0649-RE</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">98</style></volume><pages><style face="normal" font="default" size="100%">319 - 327</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;To evaluate &lt;em&gt;Phytophthora cinnamomi&lt;/em&gt; as a cause of white oak (&lt;em&gt;Quercus alba&lt;/em&gt;) decline in mid-Atlantic forests, sampling was conducted at 102 sites from 2011 to 2012. Soil and roots from healthy and declining white oak trees were collected. &lt;em&gt;Phytophthora&lt;/em&gt; spp. were isolated using baiting and CFU of &lt;em&gt;P. cinnamomi&lt;/em&gt; quantified using wet-sieving. Fine roots were scanned and measured. &lt;em&gt;Phytophthora&lt;/em&gt; spp. were isolated from 43% of the sites. &lt;em&gt;P. cinnamomi&lt;/em&gt; was common; six other species were isolated infrequently. Little difference in lesion size existed on white oak seedlings inoculated with 32 isolates of &lt;em&gt;P. cinnamomi&lt;/em&gt;; only 13 isolates caused significant mortality. Soils from white oak versus nine other hosts did not have significantly different CFU. &lt;em&gt;P. cinnamomi&lt;/em&gt; was restricted to United States Department of Agriculture hardiness zones six and seven and never found in zone five. The presence of &lt;em&gt;Phytophthora&lt;/em&gt; spp. in soil can be associated with white oak fine root health. When &lt;em&gt;Phytophthora&lt;/em&gt; spp. were present, white oak trees in zones five and six had less fine roots. In mid-Atlantic oak forests, however, environmental conditions appear to play a key role in determining the impact of &lt;em&gt;P. cinnamomi&lt;/em&gt; on the root system. &lt;em&gt;P. cinnamomi&lt;/em&gt; alone does not appear to be a causal factor of white oak decline.&lt;/p&gt;</style></abstract><issue><style face="normal" font="default" size="100%">3</style></issue></record></records></xml>