<?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>0185-3309</journal-id>
<journal-title><![CDATA[Revista mexicana de fitopatología]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. mex. fitopatol]]></abbrev-journal-title>
<issn>0185-3309</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de Fitopatología A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0185-33092024000200102</article-id>
<article-id pub-id-type="doi">10.18781/r.mex.fit.2307-7</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Armillaria gallica asociado a la pudrición de raíz del aguacate en Michoacán]]></article-title>
<article-title xml:lang="en"><![CDATA[Armillaria gallica associated with avocado root rot in Michoacán]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Michua-Cedillo]]></surname>
<given-names><![CDATA[Jeny]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Téliz-Ortíz]]></surname>
<given-names><![CDATA[Daniel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ochoa-Ascencio]]></surname>
<given-names><![CDATA[Salvador]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rodríguez-Guzmán]]></surname>
<given-names><![CDATA[María del Pilar]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Alarcón]]></surname>
<given-names><![CDATA[Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[León]]></surname>
<given-names><![CDATA[Carlos de]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Vázquez-Marrufo]]></surname>
<given-names><![CDATA[Gerardo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,BioLab  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Colegio de Postgraduados  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad Michoacana de San Nicolás de Hidalgo  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Michoacana de San Nicolás de Hidalgo  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2024</year>
</pub-date>
<volume>42</volume>
<numero>2</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0185-33092024000200102&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0185-33092024000200102&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0185-33092024000200102&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Objetivos y antecedentes La pudrición de la raíz y muerte de árboles de aguacate asociada a Armillaria es una enfermedad emergente con alto impacto económico en huertos establecidos en áreas previamente forestales de Michoacán. Actualmente se desconoce con precisión las especies asociadas con síntomas típicos de marchites, amarillamiento, producción excesiva de frutos y micelio subcortical en raíz. El objetivo de esta investigación fue caracterizar molecularmente las especies de Armillaria asociadas a la pudrición de la raíz del aguacate.  Materiales y Métodos Para la caracterización morfológica y molecular, en extracto de malta-agar, se procesaron 60 muestras de raíz de árboles provenientes de tres huertos comerciales con presencia putativa de Armillaria. ADN de aislados purificados se amplificaron por PCR con genes rpb2 y TEF &#945;-1. Las secuencias se alinearon con MAFFT y se realizaron las filogenias con algoritmo de máxima verosimilitud en IQ-TREE.  Resultados Se identificaron dos especies de forma consistente: A. gallica (20%) con 100% de homología y A. mexicana (25%) con 98%. Otra especie que representó el 55% de los aislados no se alineo con ningún grupo. Morfológicamente, los basidiocarpos de A. gallica concuerdan con las características de esta especie.  Conclusiones Este es el primer reporte de A. gallica asociado a la pudrición de la raíz del aguacate en Michoacán.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Aims and background Root rot and the death of avocado trees related to Armillaria is an emerging disease with a high economic impact in orchards established in previously forested areas of Michoacán. Nowadays, the species related with typical symptoms of wilting, yellowing, excessive fruit production and subcortical mycelia in the roots is unknown. The aim of this investigation was to molecularly characterize the species of Armillaria associated to avocado root rot.  Materials and methods For the morphological and molecular characterization, 60 root simples from trees found in three commercial orchards with a putative presence of Armillaria were processed in a malt-agar extract. The DNA of purified isolations were amplified by PCR with genes RPB2 and TEF &#945;-1. The sequences were aligned using MAFFT and the phylogenies were constructed using the maximum likelihood algorithm in IQ-TREE.  Results Two species were consistently identified: A. gallica (20%) with a 100% homology, and A. mexicana (25%), with 98%. Another species that represented 55% of the isolations was not aligned with any group. Morphologically, the A. gallica basidiocarps coincide with the characteristics of this species.  Conclusions This is the first report on A. gallica associated to avocado root rot in Michoacán.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Basidiocarpo]]></kwd>
<kwd lng="es"><![CDATA[rpb2]]></kwd>
<kwd lng="es"><![CDATA[tef &#945;-1]]></kwd>
<kwd lng="es"><![CDATA[Marchitez]]></kwd>
<kwd lng="en"><![CDATA[Basidiocarp]]></kwd>
<kwd lng="en"><![CDATA[RPB2]]></kwd>
<kwd lng="en"><![CDATA[TEF &#945;-1]]></kwd>
<kwd lng="en"><![CDATA[Wilting]]></kwd>
</kwd-group>
</article-meta>
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