<?xml version="1.0" encoding="ISO-8859-1"?><article xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
<front>
<journal-meta>
<journal-id>0377-9424</journal-id>
<journal-title><![CDATA[Agronomía Costarricense]]></journal-title>
<abbrev-journal-title><![CDATA[Agron. Costarricense]]></abbrev-journal-title>
<issn>0377-9424</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Costa Rica. Colegio de Ingenieros y Agrónomos. Ministerio de Agricultura y Ganadería]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0377-94242017000100019</article-id>
<article-id pub-id-type="doi">10.15517/rac.v41i1.29746</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Pruebas in vitro de hongos Antagonistas para combatir La Roya de Mora en Costa Rica]]></article-title>
<article-title xml:lang="en"><![CDATA[In vitro tests of antagonist Fungi to control blackberry rust in Costa Rica]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Holst Sanjuán]]></surname>
<given-names><![CDATA[Konrad]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rivera-Coto]]></surname>
<given-names><![CDATA[German]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villalobos-Moya]]></surname>
<given-names><![CDATA[Keylor]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Orozco-Rodríguez]]></surname>
<given-names><![CDATA[Rafael]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Orozco-Cayasso]]></surname>
<given-names><![CDATA[Steffany]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Nacional de Costa Rica Laboratorio de Cultivo de Tejidos y Células ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>CR</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Nacional de Costa Rica Laboratorio de Fitopatología ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>CR</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2017</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2017</year>
</pub-date>
<volume>41</volume>
<numero>1</numero>
<fpage>19</fpage>
<lpage>32</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_arttext&amp;pid=S0377-94242017000100019&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_abstract&amp;pid=S0377-94242017000100019&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.sa.cr/scielo.php?script=sci_pdf&amp;pid=S0377-94242017000100019&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[ResumenEl objetivo de esta investigación fue aislar hongos asociados a pústulas de roya (Kuehneola spp.), para seleccionar cepas con algún efecto antagonista sobre el agente causal de esta enfermedad, en 7 localidades de la Zona de Los Santos y Pérez Zeledón, Costa Rica. Se realizaron muestreos en plantaciones de mora cultivadas orgánicamente para obtener distintos hongos y determinar su posible acción antagónica contra el agente causal. El estudio se extendió por espacio de un año (junio 2011-junio 2012), periodo en el cual se realizaron recolecciones mensuales para incluir la mayor diversidad de eventuales biocontroladores durante un ciclo. Del material recolectado se logró aislar un total de 11 géneros diferentes de hongos: Pestalotia spp., Sphaeropsis sp., Botrytis sp., Verticillium sp., Macrophomina sp., Cladosporium spp., Phoma sp., Colletotrichum spp., Rhizoctonia sp., Libertella sp., Paecilomyces sp., y varios micelios estériles no identificados. Para establecer el posible efecto antagonista de los hongos, se realizaron ensayos in vitro con el fin de determinar su capacidad supresora, sobre la germinación de las uredósporas de Kuehneola spp. De todos los aislamientos, los que resultaron significativamente distintos a su respectivo testigo fueron los del género Cladosporium. Para determinar diferencias significativas entre estos aislamientos se realizaron comparaciones entre ellos y se estableció que todos los aislamientos afectaron de igual forma la germinación de uredósporas y solamente Clados4 inhibió por completo la germinación.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[AbstractThe purpose of this study was to isolate fungi associated with blackberry rust (Kuehneola spp.) pustules in order to select isolates with an antagonistic effect to this pathogen, in 7 locations of Los Santos and Pérez Zeledón, Costa Rica. Sampling was carried out in organically grown blackberry plantations to obtain different fungi and to determine their possible antagonistic action against the causal agent. The study was carried out for a period of one year (June 2011June 2012), during which pustule samples were collected monthly to include the greatest diversity of possible biocontrollers during a cycle.From the collected material, a total of 11 different genera of fungi were isolated: Pestalotia spp., Sphaeropsis sp., Botrytis sp., Verticillium sp., Macrophomina sp., Cladosporium spp., Phoma sp., Colletotrichum spp., Rhizoctonia sp., Libertella sp., Paecilomyces sp., and several unidentified sterile mycelia. In order to establish the possible antagonistic fungi effect, in vitro assays were conducted in order to determine their suppressive capacity on Kuehneola spp., uredospores germination. Of all the isolates, those that were significantly different from their respective control were those of Cladosporium spp. In order to determine significant differences between these isolates, comparisons were made between them, and it was established that all the isolates equally affected germination of uredospores and only Clados4 completely inhibited germination.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Rubus sp.]]></kwd>
<kwd lng="es"><![CDATA[mora]]></kwd>
<kwd lng="es"><![CDATA[biocontrol]]></kwd>
<kwd lng="es"><![CDATA[parasitismo]]></kwd>
<kwd lng="es"><![CDATA[roya]]></kwd>
<kwd lng="es"><![CDATA[pruebas in vitro.]]></kwd>
<kwd lng="en"><![CDATA[Rubus sp.]]></kwd>
<kwd lng="en"><![CDATA[blackberry]]></kwd>
<kwd lng="en"><![CDATA[bio control]]></kwd>
<kwd lng="en"><![CDATA[parasitism]]></kwd>
<kwd lng="en"><![CDATA[rust]]></kwd>
<kwd lng="en"><![CDATA[in vitro tests.]]></kwd>
</kwd-group>
</article-meta>
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