<?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>2007-4298</journal-id>
<journal-title><![CDATA[Botanical Sciences]]></journal-title>
<abbrev-journal-title><![CDATA[Bot. sci]]></abbrev-journal-title>
<issn>2007-4298</issn>
<publisher>
<publisher-name><![CDATA[Sociedad Botánica de México A.C.]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-42982024000300765</article-id>
<article-id pub-id-type="doi">10.17129/botsci.3454</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Enhanced mycorrhization in four species of columnar cacti under the Sonoran Desert tree Olneya tesota]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Blanco-Valenzuela]]></surname>
<given-names><![CDATA[Gabriela]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Calderón]]></surname>
<given-names><![CDATA[Kadiya]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ochoa-Meza]]></surname>
<given-names><![CDATA[Andrés]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Peñalba]]></surname>
<given-names><![CDATA[M. Cristina]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Tinoco-Ojanguren]]></surname>
<given-names><![CDATA[Clara]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Hermosillo  ]]></institution>
<addr-line><![CDATA[Hermosillo Sonora]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad de Sonora Departamento de Investigaciones Científicas y Tecnológicas ]]></institution>
<addr-line><![CDATA[Hermosillo Sonora]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad de Sonora Departamento de Agricultura y Ganadería ]]></institution>
<addr-line><![CDATA[Hermosillo Sonora]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Nacional Autónoma de México Instituto de Ecología Departamento de Ecología de la Biodiversidad]]></institution>
<addr-line><![CDATA[Hermosillo Sonora]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2024</year>
</pub-date>
<volume>102</volume>
<numero>3</numero>
<fpage>765</fpage>
<lpage>778</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-42982024000300765&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-42982024000300765&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-42982024000300765&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract  Background:  Columnar cacti survival in deserts occurs mainly under nurse plants, due to better conditions for germination and establishment, as greater humidity, and nutrient concentration. However, interactions like the association between arbuscular mycorrhizal fungi (AMF) and roots remain relatively unexplored. We evaluated the mycorrhizal status and soil rhizosphere properties of four columnar cacti species growing both under and outside their nurse plant.  Hypotheses:  Soil properties improvement under nurse plants has been correlated with the abundance of AMF. Therefore, a greater number of AMF structures and roots mycorrhization would be in facilitated plants, compared to the same species growing outside the nurse.  Studied species:  Nurse plant: Olneya tesota, facilitated species: Carnegiea gigantea, Pachycereus pringlei, Pachycereus schottii, and Stenocereus thurberi.  Study site and dates:  Central Gulf Coast subdivision of the Sonoran Desert, Sonora, Mexico; October 2020.  Methods:  Cacti roots and soil rhizosphere were collected under and outside the nurse plant. Roots were stained, and mycorrhizal colonization (MC), hairy roots (HR), visual density (VD), and number of spores were determined. Physicochemical soil properties were analyzed.  Results:  Values of MC, VD, spore number, organic matter (OM), nitrate, and total and assimilable phosphorous were higher under the nurse compared to bare areas.  Conclusions:  The hypothesis that mycorrhization parameters are greater in roots of cacti growing under the nurse was confirmed, besides previous knowledge about soil quality under nurse plants, suggesting that AMF play a significant role in the cacti facilitation process under nurses plants, and that nurse plant plays a significant role in AMF formation.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen  Antecedentes:  La supervivencia de cactus columnares en desiertos ocurre principalmente bajo plantas nodrizas, debido a mejores condiciones para germinar y establecerse (mayor humedad y concentración de nutrientes). Empero, interacciones como la asociación entre hongos micorrizógenos arbusculares (HMA) y raíces continua relativamente inexplorada. Evaluamos el estado micorrícico y propiedades del suelo rizosférico de cuatro especies de cactus columnares creciendo tanto debajo como fuera de su nodriza.  Hipótesis:  Se ha relacionado el mejoramiento de propiedades del suelo bajo la nodriza con la abundancia de HMA. Por lo tanto, plantas facilitadas mostrarán más estructuras de HMA y de micorrización de raíces, comparado con las mismas especies creciendo fuera de la nodriza.  Especies estudiadas:  Nodriza: Olneya tesota, facilitadas: Carnegiea gigantea, Pachycereus pringlei, Pavhycereus schottii, Stenocereus thurberi.  Sitio y años de estudio:  Subdivisión de la Costa Central del Golfo del Desierto Sonorense, Sonora, México, octubre de 2020.  Métodos:  Se recolectaron raíces de cactus y suelo rizosférico debajo y fuera de la nodriza. En raíces teñidas se determinó: colonización micorrízica (CM), pelos radicales (PR), densidad visual (DV) y número de esporas (NE). Se analizaron propiedades fisicoquímicas del suelo.  Resultados:  Valores de CM, DV, NE, materia orgánica, nitrato y fósforo total y asimilable fueron mayores bajo la nodriza en comparación con áreas desnudas.  Conclusiones:  Se confirma la hipótesis planteada y se reafirma el conocimiento previo sobre la calidad del suelo bajo nodrizas, sugiriendo que los HMA juegan un papel importante en la facilitación de cactus bajo las plantas nodrizas, y que estas últimas influencian la formación de HMA.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Arbuscular mycorrhizal fungi]]></kwd>
<kwd lng="en"><![CDATA[facilitation]]></kwd>
<kwd lng="en"><![CDATA[resource islands]]></kwd>
<kwd lng="en"><![CDATA[ironwood]]></kwd>
<kwd lng="en"><![CDATA[mycorrhizal colonization]]></kwd>
<kwd lng="en"><![CDATA[soil nutrients]]></kwd>
<kwd lng="es"><![CDATA[hongos micorrizógenos arbusculares]]></kwd>
<kwd lng="es"><![CDATA[facilitación]]></kwd>
<kwd lng="es"><![CDATA[islas de recursos]]></kwd>
<kwd lng="es"><![CDATA[palofierro]]></kwd>
<kwd lng="es"><![CDATA[colonización micorrízica]]></kwd>
<kwd lng="es"><![CDATA[nutrientes del suelo]]></kwd>
</kwd-group>
</article-meta>
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