<?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>2007-0934</journal-id>
<journal-title><![CDATA[Revista mexicana de ciencias agrícolas]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Mex. Cienc. Agríc]]></abbrev-journal-title>
<issn>2007-0934</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-09342018000501061</article-id>
<article-id pub-id-type="doi">10.29312/remexca.v9i5.1509</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Aislamiento, caracterización y patogenicidad de hongos causantes de muerte descendente del nogal negro americano]]></article-title>
<article-title xml:lang="en"><![CDATA[Isolation, characterization and pathogenicity of fungi causing descending death of American Black Walnut]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Raya-Pérez]]></surname>
<given-names><![CDATA[Mario]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sánchez-Arizpe]]></surname>
<given-names><![CDATA[Abiel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García-Martínez]]></surname>
<given-names><![CDATA[Oswaldo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Galindo-Cepeda]]></surname>
<given-names><![CDATA[Ma. Elizabeth]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-Guerra]]></surname>
<given-names><![CDATA[Raúl]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Peña-Carrillo]]></surname>
<given-names><![CDATA[Kenzy Ivveth]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma Agraria Antonio Narro  ]]></institution>
<addr-line><![CDATA[Saltillo Coahuila]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,INIFAP Campo Experimental General Terán ]]></institution>
<addr-line><![CDATA[ Nuevo León]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>08</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>08</month>
<year>2018</year>
</pub-date>
<volume>9</volume>
<numero>5</numero>
<fpage>1061</fpage>
<lpage>1066</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-09342018000501061&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-09342018000501061&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-09342018000501061&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El nogal negro americano (Juglans nigra L.) es afectado por problemas fitosanitarios, destacando hongos causantes de cancros en ramas, reduciendo la producción de fruto hasta 60% del rendimiento promedio que es 1.9 t ha-1. Los objetivos de esta investigación fueron identificar los hongos asociados a cancros presentes en ramas de árboles de J. nigra con síntomas de muerte descendente y evaluar su patogenicidad. Se aislaron hongos de cancros de ramas con síntomas de muerte descendente colectadas en dos huertas del estado de Coahuila. Cuatro morfotipos de hongos fueron obtenidos y una cepa de cada uno se utilizó para su identificación morfológica a nivel de género, y mediante la secuenciación de la región ITS1 a ITS2 de los genes ribosomales (rDNA) para su identificación a nivel de especie. Las pruebas de patogenicidad se realizaron en plántulas de J. nigra de cuatro meses de edad, realizando una fisura en el tallo de 3 mm de largo e inoculando con cada especie identificada. Los hongos asociados a los cancros de J. nigra fueron identificados morfológicamente como miembros de los géneros Trichothecium, Pestalotiopsis, Alternaria y Rhizoctonia. Mediante el análisis BLAST en el GenBank de las secuencias de la región ITS1 a ITS2 fue posible determinar que las cepas se encontraron relacionadas a las especies Trichothecium roseum, Pestalotiopsis steyaertii, Alternaria alternata y a una especie binucleada no determinada de Rhizoctonia. La inoculación de las cuatro cepas a plántulas demostró que éstas son patogénicas a J. nigra.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract American black walnut (Juglans nigra L.) is affected by phytosanitary problems, highlighting fungi that cause cankers in branches, reducing fruit production up to 60% of the average yield that is 1.9 t ha-1. The objectives of this investigation were to identify the fungi associated with cankers present in branches of trees of J. nigra with symptoms of descending death and to evaluate their pathogenicity. Canker fungi were isolated from branches with symptoms of descending death collected in two orchards of the state of Coahuila. Four fungal morphotypes were obtained and one strain of each was used for its morphological identification at the genus level, and by sequencing the ITS1 region to ITS2 of the ribosomal genes (rDNA) for its identification at the species level. Pathogenicity tests were performed on four-month-old J. nigra seedlings, making a 3 mm long stem fissure and inoculating with each identified species. The fungi associated with the cankers of J. nigra were morphologically identified as members of the genera Trichothecium, Pestalotiopsis, Alternaria and Rhizoctonia. By means of the BLAST analysis in the GenBank of the sequences of the ITS1 to ITS2 region it was possible to determine that the strains were related to the species Trichothecium roseum, Pestalotiopsis steyaertii, Alternaria alternata and to an undetermined binucleate species of Rhizoctonia. The inoculation of the four strains to seedlings showed that they are pathogenic to J. nigra.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Alternaria alternata]]></kwd>
<kwd lng="es"><![CDATA[Pestalotiopsis steyaertii]]></kwd>
<kwd lng="es"><![CDATA[Rhizoctonia binucleada]]></kwd>
<kwd lng="es"><![CDATA[Trichothecium roseum]]></kwd>
<kwd lng="es"><![CDATA[hongos en cancros]]></kwd>
<kwd lng="en"><![CDATA[Alternaria alternata]]></kwd>
<kwd lng="en"><![CDATA[Pestalotiopsis steyaertii]]></kwd>
<kwd lng="en"><![CDATA[Rhizoctonia binucleada]]></kwd>
<kwd lng="en"><![CDATA[Trichothecium roseum]]></kwd>
<kwd lng="en"><![CDATA[fungi in cankers]]></kwd>
</kwd-group>
</article-meta>
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<source><![CDATA[Forests]]></source>
<year>2014</year>
<volume>5</volume>
<page-range>1185-93</page-range></nlm-citation>
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</back>
</article>
