<?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>1870-3453</journal-id>
<journal-title><![CDATA[Revista mexicana de biodiversidad]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Mex. Biodiv.]]></abbrev-journal-title>
<issn>1870-3453</issn>
<publisher>
<publisher-name><![CDATA[Instituto de Biología]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1870-34532023000100213</article-id>
<article-id pub-id-type="doi">10.22201/ib.20078706e.2023.94.5214</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Conservation genetics of the protected candy barrel cactus Echinocactus platyacanthus in the Chihuahuan Desert Region]]></article-title>
<article-title xml:lang="es"><![CDATA[Genética de la conservación de la biznaga de dulce protegida Echinocactus platyacanthus en la Región del Desierto Chihuahuense]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Figueroa-Cabañas]]></surname>
<given-names><![CDATA[Mónica]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Bárcenas]]></surname>
<given-names><![CDATA[Rolando T.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Querétaro Facultad de Ciencias Naturales Laboratorio Darwin de Sistemática Filogenética y Biogeografía Evolutiva]]></institution>
<addr-line><![CDATA[Querétaro Querétaro]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2023</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2023</year>
</pub-date>
<volume>94</volume>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1870-34532023000100213&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1870-34532023000100213&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1870-34532023000100213&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Three main genetic diversity hotspots were identified in a survey of the genetic variability of the populations of the candy barrel cactus Echinocactus platyacanthus, a protected and highly sought-after cacti for ornamental, culinary and livestock water source in the Chihuahuan Desert Region, Mexico. This study identified one southern, one central, and one northern population in the Chihuahuan Desert Region as first priorities for conservation based on the analysis of a matrix of 4 ISSRs for 183 individuals from 10 localities along the 900 × 300 air km polygon of the geographic distribution of the species. The genetic structure of the 183 individuals from the 10 populations studied, showed a high degree of genetic differentiation for each of the localities with low gene flow, making each of these populations important for conservation actions. The isolation by distance analysis showed that other factors apart from the geographic distance could be playing an important role in the differentiation of the genetic structure of the populations. The UPGMA tree derived from the genetic distance matrix showed that the central and the southern populations conform a mega genetic population clearly separated from the northern populations, each with its own genetic signature.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Se identificaron 3 centros de alta diversidad genética de la biznaga Echinocactus platyacanthus en el desierto Chihuahuense mexicano. Esta especie en categoría de protección especial, es apreciada por su valor ornamental, como fuente de agua para el ganado caprino y por ser fuente del dulce de acitrón. Este estudio identificó una población del sur, una del centro y una del norte del desierto Chihuahuense como las prioridades para la conservación biológica basado en 4 marcadores moleculares para 183 individuos de 10 localidades en un área de casi 900 × 300 km lineales. La estructura genética de los 183 individuos de las 10 poblaciones estudiadas exhibió un alto grado de diferenciación para cada una de las localidades, así como un bajo flujo génico, haciendo a cada una de estas poblaciones relevante para la conservación. El análisis de aislamiento por distancia mostró que pueden existir otros factores diferentes a la distancia geográfica que podrían estar jugando un papel importante en la diferenciación genética de las poblaciones. El árbol UPGMA derivado de una matriz de distancias mostró que las poblaciones del centro y las del sur conforman una megapoblación genéticamente separada de la megapoblación del norte, cada una con su propia firma genética.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Ex situ conservation]]></kwd>
<kwd lng="en"><![CDATA[Seed banks]]></kwd>
<kwd lng="en"><![CDATA[Cactaceae]]></kwd>
<kwd lng="en"><![CDATA[Molecular markers]]></kwd>
<kwd lng="en"><![CDATA[Arid regions]]></kwd>
<kwd lng="es"><![CDATA[Conservación ex situ]]></kwd>
<kwd lng="es"><![CDATA[Bancos de semillas]]></kwd>
<kwd lng="es"><![CDATA[Cactaceae]]></kwd>
<kwd lng="es"><![CDATA[Marcadores moleculares]]></kwd>
<kwd lng="es"><![CDATA[Zonas áridas]]></kwd>
</kwd-group>
</article-meta>
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