<?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>0187-5779</journal-id>
<journal-title><![CDATA[Terra Latinoamericana]]></journal-title>
<abbrev-journal-title><![CDATA[Terra Latinoam]]></abbrev-journal-title>
<issn>0187-5779</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Mexicana de la Ciencia del Suelo A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0187-57792019000200093</article-id>
<article-id pub-id-type="doi">10.28940/terra.v37i2.437</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[El papel de los hongos en la conservación de Andosols: estudio de caso en Tlaxcala, México]]></article-title>
<article-title xml:lang="en"><![CDATA[The role of fungi in the conservation of Andosols: case study in Tlaxcala México]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Jiménez Martínez]]></surname>
<given-names><![CDATA[Arturo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gutiérrez Castorena]]></surname>
<given-names><![CDATA[Ma. del Carmen]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gutiérrez Castorena]]></surname>
<given-names><![CDATA[Edgar Vladimir]]></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[Gavito Pardo]]></surname>
<given-names><![CDATA[Mayra Elena]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Montaño Árias]]></surname>
<given-names><![CDATA[Noé Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Colegio de Postgraduados Área de Génesis, Morfología y Clasificación de Suelos ]]></institution>
<addr-line><![CDATA[Texcoco Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma de Nuevo León Facultad de Agronomía ]]></institution>
<addr-line><![CDATA[Cd. Gral. Escobedo N.L.]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Colegio de Postgraduados Área de Microbiología ]]></institution>
<addr-line><![CDATA[Texcoco Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,UNAM Instituto de Investigaciones en Ecosistemas y Sustentabilidad Laboratorio de Interacción Planta-Microbio-Ambiente]]></institution>
<addr-line><![CDATA[Morelia Michoacán]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Universidad Autónoma Metropolitana Departamento de Biología Botánica ]]></institution>
<addr-line><![CDATA[Iztapalapa Ciudad de México]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>06</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>06</month>
<year>2019</year>
</pub-date>
<volume>37</volume>
<numero>2</numero>
<fpage>93</fpage>
<lpage>103</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S0187-57792019000200093&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S0187-57792019000200093&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S0187-57792019000200093&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: El estado de Tlaxcala, México, presenta problemas ambientales relacionados con la erosión del suelo; sin embargo, en algunas áreas conformadas por Andosols, bosque de pino y zonas agrícolas, su degradación es mínima. La presencia de micelio abundante en los horizontes subsuperficiales en suelos localizados en pendiente puede ser causa que los suelos se conserven. Los objetivos del estudio fueron caracterizar las propiedades edáficas de suelos en diferente posición geomorfológica, identificar especies de hongos micorrízico arbusculares (HMA) y determinar la relación del micelio con los agregados y las partículas elementales en un Vitric Andosols de Calpulalpan, Tlaxcala, México. Los resultados muestran que los suelos presentaron diferentes secuencias y espesores de cenizas y lapillis pomáceos, de moderada a alta fertilidad. La estructura migajosa dominó en horizontes superiores y granular simple en sub-horizontes. Los horizontes presentaron retención alta de humedad y permeabilidad facilitando el desarrollo micelial y formación de esporas de HMA hasta 120 cm de profundidad. Se registraron 10 especies de HMA y la mas abundante fue Funneliformis mosseae. El análisis micro-morfológico mostró diferentes relaciones entre el micelio, los horizontes y las partículas del suelo, con residuos orgánicos (horizonte O), macro y micro agregados (horizontes A y B), alófano e imogolita (horizonte B) y lapillis (horizonte C). El micelio de los hongos formó redes en todo el suelo y en los lapillis inserta a las partículas de pómez (como cuentas de rosario) a través de los poros vesiculares tubulares lo que le proporciona estabilidad a los Andosols y evita su degradación.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Summary: Tlaxcala state, Mexico, show environmental problems related to soil erosion; however, in some areas of Andosols, with pine forests and even in agricultural areas, it has been observed that their degradation is minimal. The abundant presence of mycelium even in subsurface horizons can be the reason why soils are conserved. The objectives of this study were to characterize the edaphic properties in different geo-morphological positions, to identify the species of arbuscular mycorrhizal fungi (AMF) and to determine the relationship of the mycelium with aggregates and elementary particles in a Vitric Andosols of Calpulalpan, Tlaxcala, Mexico. The results showed that soils have different sequences and thicknesses of ashes and lapillis pomaceous and have moderate to high fertility. The crumbly structure dominated in upper horizons and simple granular in sub-horizons. The horizons showed high retention of humidity and permeability facilitating mycelial development and formation of AMF spores up to 120 cm deep. Ten species of AMF were recorded and the most abundant was Funneliformis mosseae. The micro-morphological analysis showed different relationships between the mycelium, horizon and soil particles, with organic waste (horizon O), with macro and micro aggregates (horizons A and B), with allophane and imogolite (horizons B) and lapillis (horizon C). The fungal mycelium forms networks throughout the soil, and in the lapillis it inserts the pumice particles (like a rosary) through the tubular vesicular pores, which provides stability to the Andosols and prevents their degradation.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Vitric Andosols]]></kwd>
<kwd lng="es"><![CDATA[lapillis pomáceos]]></kwd>
<kwd lng="es"><![CDATA[micromorfología]]></kwd>
<kwd lng="es"><![CDATA[hongos micorrízicos]]></kwd>
<kwd lng="en"><![CDATA[Vitric Andosols]]></kwd>
<kwd lng="en"><![CDATA[pomaceous lappilis]]></kwd>
<kwd lng="en"><![CDATA[micromorphology]]></kwd>
<kwd lng="en"><![CDATA[mycorrhizal fungi]]></kwd>
</kwd-group>
</article-meta>
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