<?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%">Clive M. Brasier</style></author><author><style face="normal" font="default" size="100%">Paul A. Beales</style></author><author><style face="normal" font="default" size="100%">KIRK,Susan A.</style></author><author><style face="normal" font="default" size="100%">Denman,Sandra</style></author><author><style face="normal" font="default" size="100%">Joan Rose</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Phytophthora kernoviae sp. nov., an invasive pathogen causing bleeding stem lesions on forest trees and foliar necrosis of ornamentals in the UK</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%">2005</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://www.sciencedirect.com/science/article/B7XMR-4RS503Y-5/2/2264e8910ee36f4e72255d6160ebf9e4</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">8</style></number><volume><style face="normal" font="default" size="100%">109</style></volume><pages><style face="normal" font="default" size="100%">853 - 859</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;A new &lt;em&gt;Phytophthora&lt;/em&gt; pathogen of trees and shrubs, previously informally designated &lt;em&gt;Phytophthora&lt;/em&gt; taxon C, is formally named here as &lt;em&gt;P. kernoviae. P. kernoviae&lt;/em&gt; was discovered in late 2003 during surveys of woodlands in Cornwall, south-west England, for the presence of another invasive pathogen, &lt;em&gt;P. ramorum. P. kernoviae&lt;/em&gt; is self-fertile (homothallic), having plerotic oogonia, often with distinctly tapered stalks and amphigynous antheridia. It produces papillate sporangia, sometimes markedly asymmetric with medium length pedicels. Its optimum temperature for growth is ca 18 $ınfty$C and upper limit ca 26$ınfty$. Currently, &lt;em&gt;P. kernoviae&lt;/em&gt; is especially noted for causing bleeding stem lesions on mature &lt;em&gt;Fagus sylvatica&lt;/em&gt; and foliar and stem necrosis of &lt;em&gt;Rhododendron ponticum. P. kernoviae&lt;/em&gt; is the latest of several invasive tree &lt;em&gt;Phytophthoras&lt;/em&gt; recently identified in the UK. Its geographical origins and the possible plant health risk it poses are discussed.&lt;/p&gt;</style></abstract></record><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%">Clive M. Brasier</style></author><author><style face="normal" font="default" size="100%">Kirk, S.A.</style></author><author><style face="normal" font="default" size="100%">Jose Delcan</style></author><author><style face="normal" font="default" size="100%">David E.L. Cooke</style></author><author><style face="normal" font="default" size="100%">Thomas Jung</style></author><author><style face="normal" font="default" size="100%">Man In’t Veld, W.A.</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%">Phytophthora alni sp. nov. and its variants: designation of emerging heteroploid hybrid pathogens spreading on Alnus trees</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%">2004</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">http://dx.doi.org/10.1017/S0953756204001005</style></url></web-urls></urls><number><style face="normal" font="default" size="100%">10</style></number><volume><style face="normal" font="default" size="100%">108</style></volume><pages><style face="normal" font="default" size="100%">1172-1184</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;p&gt;In 1993 a destructive new &lt;em&gt;Phytophthora&lt;/em&gt; pathogen of riparian &lt;em&gt;Alnus&lt;/em&gt; trees was discovered in the UK and subsequently shown to be present in other parts of Europe. The new &lt;em&gt;Phytophthora&lt;/em&gt; comprised a group of emergent heteroploid hybrids, probably between &lt;em&gt;P. cambivora&lt;/em&gt; and a species related to &lt;em&gt;P. fragariae.&lt;/em&gt; These included a common, near tetraploid standard hybrid, the presumptive allopolyploid; and four scarcer major variant types with chromosome numbers intermediate between diploid and tetraploid, named the Swedish, Dutch, German and UK variants. The standard hybrid type is formally designated here as &lt;em&gt;Phytophthora alni&lt;/em&gt; subsp. &lt;em&gt;alni.&lt;/em&gt; The Swedish variant is designated as &lt;em&gt;P. alni&lt;/em&gt; subsp. &lt;em&gt;uniformis&lt;/em&gt;; and the Dutch, German and UK variants collectively as &lt;em&gt;P. alni&lt;/em&gt; subsp. &lt;em&gt;multiformis.&lt;/em&gt; The properties of the Dutch, German and UK variants within subsp. &lt;em&gt;multiformis&lt;/em&gt; are informally described. The problems of designating emergent species hybrids under the International Code of Botanical Nomenclature and the reasons for the taxonomic choices made are discussed.&lt;/p&gt;</style></abstract></record></records></xml>