<?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>S2007-42982019000300398</article-id>
<article-id pub-id-type="doi">10.17129/botsci.2191</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Phytochemical variation among populations of Fouquieria splendens (Fouquieriaceae)]]></article-title>
<article-title xml:lang="es"><![CDATA[Variación fitoquímica entre poblaciones de Fouquieria splendens (Fouquieriaceae)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Monreal-García]]></surname>
<given-names><![CDATA[Hugo Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Almaraz-Abarca]]></surname>
<given-names><![CDATA[Norma]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ávila-Reyes]]></surname>
<given-names><![CDATA[José Antonio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Torres-Ricario]]></surname>
<given-names><![CDATA[René]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Elizondo]]></surname>
<given-names><![CDATA[M. Socorro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Herrera-Arrieta]]></surname>
<given-names><![CDATA[Yolanda]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Gutiérrez-Velázquez]]></surname>
<given-names><![CDATA[Marcela Verónica]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Politécnico Nacional  ]]></institution>
<addr-line><![CDATA[ Durango]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2019</year>
</pub-date>
<volume>97</volume>
<numero>3</numero>
<fpage>398</fpage>
<lpage>412</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-42982019000300398&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-42982019000300398&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-42982019000300398&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract:  Background:  Secondary metabolites are important chemomarkers. However, as a system to confront biotic and abiotic stress, chemical composition can vary, improving the phenotypic plasticity of plants. We determined the potential of the foliar and floral phenolic composition, floral carotenoid contents to discriminate between two subspecies of Fouquieria splendens and assessed the effect of atypical environmental conditions on the chemical composition of a relict population of the subspecies splendens.  Hypothesis:  We hypothesized that chemical differences have arisen between the analyzed subspecies and in the relict population allowing the differentiation between them.  Species studied: Fouquieria splendens subsp. splendens and Fouquieria splendens subsp. campanulata (Fouquieriaceae).  Study site and years of study:  Mezquital, Peñón Blanco, and San Juan del Río, Durango, México. March to August 2016.  Methods:  Foliar and floral extracts were analyzed by HPLC-DAD, UV-visible spectrophotometry, and FTIR-ATR. Multivariate analysis was used to assess the sample distinctiveness and to establish the relation between the chemical composition and environmental variables.  Results:  The chemical composition was highly conserved between the analyzed samples. Contrarily, an evident distinctiveness between phytochemical contents was observed. Soil parameters were the factors determining the particular quantitative phenolic profiles.  Conclusions:  The analyzed subspecies and populations showed similar chemical patterns; however, quantitative variations, determined by soil texture, electrical conductivity, organic matter, organic carbon, and contents of K, Ca, and Na, allowed to differentiate them. The important phenolic quantitative variation of the atypical population of F. splendens subsp. splendens suggests a relevant contribution of phenolic compounds to the adaptation to its relict condition.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen:  Antecedentes:  Los metabolitos secundarios son importantes quimiomarcadores. Como constituyen un sistema de defensa contra el estrés biótico y abiótico, su composición puede variar, mejorando la plasticidad fenotípica de las plantas. En el presente trabajo se determinó la composición fenólica foliar y floral, los contenidos de carotenoides florales para discriminar entre dos subespecies de Fouquieria splendens y se evaluó el efecto de condiciones ambientales atípicas sobre la composición química de una población relictual de la subespecie splendens.  Hipótesis:  Entre las subespecies analizadas y en la población relictual han surgido diferencias químicas que permiten su diferenciación.  Especies estudiadas: Fouquieria splendens subsp. splendens y Fouquieria splendens subsp. campanulata (Fouquieriaceae).  Lugar de estudio y años de estudio:  Mezquital, Peñón Blanco, y San Juan del Río, Durango, México. Marzo a agosto de 2016.  Métodos:  Se analizaron extractos foliares y florales mediante HPLC-DAD, espectrofotometría UV-visible, y FTIR-ATR. Se utilizaron análisis multivariados para discriminar entre muestras y establecer la relación entre composición química y variables ambientales.  Resultados:  La composición química fue altamente conservada entre las muestras analizadas. Contrariamente, los contenidos fitoquímicos fueron variables y estuvieron determinados por las características del suelo.  Conclusiones:  Las muestras analizadas mostraron patrones químicos similares; sin embargo, las variaciones cuantitativas, determinadas por la textura del suelo, conductividad eléctrica, materia orgánica, el carbono orgánico y los contenidos de K, Ca y Na, permitieron diferenciarlas. La importante variación fenólica cuantitativa de la población atípica de F. splendens subsp. splendens sugiere una contribución relevante de los compuestos fenólicos a la adaptación a su condición relictual.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Flavonoids]]></kwd>
<kwd lng="en"><![CDATA[Fouquieria splendens]]></kwd>
<kwd lng="en"><![CDATA[FTIR-ATR]]></kwd>
<kwd lng="en"><![CDATA[HPLC-DAD]]></kwd>
<kwd lng="en"><![CDATA[phenolics]]></kwd>
<kwd lng="es"><![CDATA[Compuestos fenólicos]]></kwd>
<kwd lng="es"><![CDATA[flavonoides]]></kwd>
<kwd lng="es"><![CDATA[Fouquieria splendens]]></kwd>
<kwd lng="es"><![CDATA[FTIR-ATR]]></kwd>
<kwd lng="es"><![CDATA[HPLC-DAD]]></kwd>
</kwd-group>
</article-meta>
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