<?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%">Werres, Sabine</style></author><author><style face="normal" font="default" size="100%">Rainer Marwitz</style></author><author><style face="normal" font="default" size="100%">WA Man_In’t_veld</style></author><author><style face="normal" font="default" size="100%">De Cock, AWAM</style></author><author><style face="normal" font="default" size="100%">Peter J.M. Bonants</style></author><author><style face="normal" font="default" size="100%">De Weerdt, M.</style></author><author><style face="normal" font="default" size="100%">Karin Themann</style></author><author><style face="normal" font="default" size="100%">Elena Ilieva</style></author><author><style face="normal" font="default" size="100%">Robert P. Baayen</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Phytophthora ramorum sp. nov., a new pathogen on Rhododendron and Viburnum</style></title><secondary-title><style face="normal" font="default" size="100%">Mycological Research</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2001</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.sciencedirect.com/science/article/B7XMR-4RS3YCS-4/2/9f9142119aa3952d3dbc8811be4860bb</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">10</style></number><volume><style face="normal" font="default" size="100%">105</style></volume><pages><style face="normal" font="default" size="100%">1155 - 1165</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;Since 1993, a hitherto unidentified &lt;em&gt;Phytophthora&lt;/em&gt; species has been found associated with twig blight disease in Rhododendron and, sporadically, Viburnum. The morphology and growth characteristics of fourteen isolates from Germany and the Netherlands were investigated, together with their breeding system, the internal transcribed spacer (ITS) regions of the ribosomal DNA, amplified fragment length polymorphism (AFLP) fingerprints, and isozyme profiles, which were compared to those of a number of outgroup species. Morphologically the isolates are characterized by abundant production of chlamydospores and elongate, ellipsoid, deciduous sporangia with a short pedicel, in which they resemble &lt;em&gt;P. palmivora&lt;/em&gt;. However, sporangia were semi-papillate, chlamydospores were much larger and cardinal temperatures much lower than those of &lt;em&gt;P. palmivora&lt;/em&gt;. Oogonia with amphigynous antheridia and plerotic oospores were produced in dual cultures with an A2 mating type strain of &lt;em&gt;P. cryptogea&lt;/em&gt;. ITS1 and ITS2 sequences of the unidentified species were closest to those of &lt;em&gt;P. lateralis&lt;/em&gt;, but differed in three and eight nucleotides respectively from the latter species. AFLP fingerprints and isozyme patterns of malate dehydrogenase (MDH-2) and malic enzyme (MDHP) showed that the isolates formed a homogeneous group, distinct from all examined outgroup species, including &lt;em&gt;P. lateralis&lt;/em&gt;. It was concluded that they represent a new &lt;em&gt;Phytophthora&lt;/em&gt; species, described here as &lt;em&gt;P. ramorum&lt;/em&gt; sp. nov. In pathogenicity tests all isolates of &lt;em&gt;P. ramorum&lt;/em&gt; were pathogenic to Rhododendron.&lt;/p&gt;</style></abstract></record></records></xml>