<?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>S0185-33092019000200008</article-id>
<article-id pub-id-type="doi">10.18781/r.mex.fit.1902-5</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Cambios ultraestructurales en blastosporas de Taphrina caerulescens en presencia de hospedante susceptible y no susceptible]]></article-title>
<article-title xml:lang="en"><![CDATA[Ultrastructural changes in blastospores of Taphrina caerulescens in the presence of a susceptible and non-host species]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Evans]]></surname>
<given-names><![CDATA[Gregg]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Moreno-Rico]]></surname>
<given-names><![CDATA[Onésimo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sosa-Ramírez]]></surname>
<given-names><![CDATA[Joaquín]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Luna-Ruíz]]></surname>
<given-names><![CDATA[José de Jesús]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Moreno Manzano]]></surname>
<given-names><![CDATA[Celeste Elizabeth]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Departamento de Microbiología Departamento de Microbiología ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Aguascalientes Departamento de Disciplinas Agrícolas ]]></institution>
<addr-line><![CDATA[Aguascalientes Aguascalientes]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Centro de Bachillerato Tecnológica Agropecuaria  ]]></institution>
<addr-line><![CDATA[Calvillo Aguascalientes]]></addr-line>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2019</year>
</pub-date>
<volume>37</volume>
<numero>2</numero>
<fpage>318</fpage>
<lpage>329</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0185-33092019000200008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0185-33092019000200008&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0185-33092019000200008&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen. Taphrina caerulescens es un hongo fitopatógeno de encinos, que causa ampollas en hojas de 50 especies de Quercus. En 2015, el hongo se aisló por primera vez de Quercus eduardii, especie de encino endémica de la Sierra Fría de Aguascalientes, México. El objetivo de este estudio fue documentar los cambios que se producen en el inóculo fúngico antes de la infección de su hospedante a medida que cambia de saprófito a parásito. Se utilizaron dos especies de plantas hospedantes: Q. eduardii y Q. potosina, y una especie no hospedante, Pittosporum tobira. En el microscopio electrónico de barrido se analizaron muestras de hojas 24 h, 48 h y 72 h post inoculación con una suspensión de conidios de T. caerulescens. Se observó una gemación moderada de conidios después de 24 h en muestras de Quercus; después de 48 h la gemación incrementó en las dos especies de Quercus y se observó la formación de blastosporas significativamente más pequeñas, que el inóculo original en las muestras de Quercus eduardii. La formación de tubos germinativos de las blastosporas pequeñas se comprobó después de 48 h en Quercus eduardii. Los tubos germinativos se observaron creciendo de manera aleatoria hacia las estomas. No se observaron cambios significativos en las muestras no hospedantes. No existe otro reporte de blastosporas pequeñas en T. caerulescens.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract. Taphrina caerulescens is a fungal pathogen of oak trees, it causes the disease leaf blister in 50 reported Quercus spp. In 2015, the fungus was isolated for the first time from Quercus eduardii, an oak species endemic to the Sierra Fria of Aguascalientes, Mexico. The objective of this study was to document the changes that occur in the inoculum prior to infection of its host as it changes from saprophytic to parasitic. Two host plant species were used: Q. eduardii and Q. potosina and one non-host species Pittosporum tobira. Portions of leaf tissue 24 h, 48 h and 72 h post inoculation with a suspension of T. caerulescens conidia were analysed with a scanning electron microscope. Moderate budding was observed after 24 h on Quercus samples; after 48 h increased budding on both Quercus spp. and the formation of blastospores significantly smaller than the original inoculum was observed on the Quercus eduardii samples. Formation of germ tubes was verified after 48 h on Quercus eduardii. The germinative tubes were observed growing randomly towards the stomata. No significant changes were observed on the surface of the non-host samples. There is no other report of these smaller blastospores in T. caerulescens.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Conidio]]></kwd>
<kwd lng="es"><![CDATA[tubos germinativos]]></kwd>
<kwd lng="es"><![CDATA[infección]]></kwd>
<kwd lng="es"><![CDATA[Quercus spp.]]></kwd>
<kwd lng="es"><![CDATA[ampollas de las hojas]]></kwd>
<kwd lng="en"><![CDATA[conidia]]></kwd>
<kwd lng="en"><![CDATA[germ tubes]]></kwd>
<kwd lng="en"><![CDATA[infection]]></kwd>
<kwd lng="en"><![CDATA[Quercus spp.]]></kwd>
<kwd lng="en"><![CDATA[leaf blister]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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