<?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>0120-9965</journal-id>
<journal-title><![CDATA[Agronomía Colombiana]]></journal-title>
<abbrev-journal-title><![CDATA[Agron. colomb.]]></abbrev-journal-title>
<issn>0120-9965</issn>
<publisher>
<publisher-name><![CDATA[Universidad Nacional de Colombia, Facultad de Agronomía]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0120-99652019000300255</article-id>
<article-id pub-id-type="doi">10.15446/agron.colomb.v37n3.80189</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Rhizospheric rhizobia identification in maize (Zea mays L.) plants]]></article-title>
<article-title xml:lang="es"><![CDATA[Identificación de rizobios rizosféricos en plantas de maíz (Zea mays L.)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-Pérez]]></surname>
<given-names><![CDATA[Reneé]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Oudot]]></surname>
<given-names><![CDATA[Maxime]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Serrano]]></surname>
<given-names><![CDATA[Lizette]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández]]></surname>
<given-names><![CDATA[Ionel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Nápoles]]></surname>
<given-names><![CDATA[María]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Sosa]]></surname>
<given-names><![CDATA[Daynet]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
<xref ref-type="aff" rid="Aaf"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Pérez-Martínez]]></surname>
<given-names><![CDATA[Simón]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Nacional de Ciencias Agrícolas INCA Departamento de Fisiología y Bioquímica Vegetal ]]></institution>
<addr-line><![CDATA[San Jose de las Lajas Mayabeque]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Institut Universitaire Technologie IUT Département Génie Biologique ]]></institution>
<addr-line><![CDATA[Villeurbanne Cedex Lyon]]></addr-line>
<country>France</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Escuela Superior Politécnica del Litoral ESPOL Centro de Investigaciones Biotecnológicas del Ecuador CIBE ]]></institution>
<addr-line><![CDATA[Guayaquil Guayas]]></addr-line>
<country>Ecuador</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,Universidad Estatal de Milagros UNEMI  ]]></institution>
<addr-line><![CDATA[Milagros Guayas]]></addr-line>
<country>Ecuador</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>12</month>
<year>2019</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>12</month>
<year>2019</year>
</pub-date>
<volume>37</volume>
<numero>3</numero>
<fpage>255</fpage>
<lpage>262</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0120-99652019000300255&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0120-99652019000300255&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0120-99652019000300255&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Rhizobia have been studied for the symbiosis that they establish with the roots of legumes. However, the colonization and promotion of growth in non-leguminous plants has also been demonstrated. The aim of this work was the biochemical and molecular identification of rhizosphere rhizobia present in the rhizosphere of two commercial maize cultivars. Cultivable isolates were obtained in yeast-mannitol-agar (YMA) medium from rhizospheric soil and the rhizoplane. The cultural (size, color, mucus, etc.), morphological, and staining (cell shape, response to staining and sporulation) characteristics were determined as well as isolate responses to eight biochemical tests (acid-base production, citrate, oxidase, catalase, H2S production, urease, gelatinase and the oxidative-fermentative assay) that are valuable for rhizobia identification. The genus was determined by 16S rDNA gene sequencing. We obtained 81 total isolates of which 30.86% showed the cultural, morphological and staining characteristics expected for rhizobia and only 20% of these corresponded to the genus Rhizobium.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN Los rizobios han sido estudiados por la simbiosis que establecen con las raíces de las leguminosas. Sin embargo, la colonización y promoción del crecimiento en plantas no leguminosas también ha sido demostrada. Este trabajo tuvo como objetivo la identificación bioquímica y molecular de rizobios rizosféricos presentes en la rizosfera de dos cultivares comerciales de maíz. Se obtuvieron aislamientos cultivables en medio Levadura-Manitol-Agar (YMA) a partir del suelo rizosférico y rizoplano de las plantas. Se determinaron las características culturales del cultivo (tamaño, color, mucosidad, etc.) y morfo-tintoriales (forma celular, respuesta a la tinción y esporulación), así como la respuesta de los aislados a ocho pruebas bioquímicas (producción ácido-base, citrato, oxidasa, catalasa, producción de H2S, ureasa, gelatinasa y ensayo oxidativo-fermentativo) con valor predictivo para la identificación de rizobios. Se determinó el género mediante la secuenciación del gen ADNr-16S. Se obtuvieron 81 aislados totales de los cuales el 30.86% mostró las características culturales, morfológicas y tintoriales esperadas para los rizobios y solamente el 20% de estos correspondió al género Rhizobium.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[rhizobacteria]]></kwd>
<kwd lng="en"><![CDATA[rhizosphere]]></kwd>
<kwd lng="en"><![CDATA[molecular identification]]></kwd>
<kwd lng="en"><![CDATA[Rhizobium]]></kwd>
<kwd lng="es"><![CDATA[rizobacterias]]></kwd>
<kwd lng="es"><![CDATA[rizosfera]]></kwd>
<kwd lng="es"><![CDATA[identificación molecular]]></kwd>
<kwd lng="es"><![CDATA[Rhizobium]]></kwd>
</kwd-group>
</article-meta>
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