<?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>1665-1456</journal-id>
<journal-title><![CDATA[Biotecnia]]></journal-title>
<abbrev-journal-title><![CDATA[Biotecnia]]></abbrev-journal-title>
<issn>1665-1456</issn>
<publisher>
<publisher-name><![CDATA[Universidad de Sonora, División de Ciencias Biológicas y de la Salud]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1665-14562020000300093</article-id>
<article-id pub-id-type="doi">10.18633/biotecnia.v22i3.1060</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Detección de bassianolida y beauvericina en cepas de Beauveria bassiana y su participación en la actividad patogénica hacia Spodoptera sp.]]></article-title>
<article-title xml:lang="en"><![CDATA[Bassianolide and beauvericin detection in Beauveria bassiana strains and their participation in the pathogenic activity against Spodoptera sp.]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rosas-García]]></surname>
<given-names><![CDATA[Ninfa M.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mireles-Martínez]]></surname>
<given-names><![CDATA[Maribel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Villegas-Mendoza]]></surname>
<given-names><![CDATA[Jesús Manuel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Politécnico Nacional Centro de Biotecnología Genómica Laboratorio de Biotecnología Ambiental]]></institution>
<addr-line><![CDATA[Reynosa Tamaulipas]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2020</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2020</year>
</pub-date>
<volume>22</volume>
<numero>3</numero>
<fpage>93</fpage>
<lpage>99</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1665-14562020000300093&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1665-14562020000300093&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1665-14562020000300093&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Beauveria bassiana es un hongo entomopatógeno que produce metabolitos secundarios como factores de virulencia durante el proceso patogénico en insectos. En este estudio se analizaron once cepas de B. bassiana para determinar la presencia de los genes bbBeas y bbBsls productores de los depsipéptidos ciclooligoméricos no ribosomales beauvericina y bassianolida, respectivamente. Los genes fueron caracterizados por PCR y secuenciación. La presencia de beauvericina y bassianolida en extractos de micelio se determinó por espectrometría de masas. Los resultados indicaron que con excepción de la cepa 2857, todas poseen los dos genes y sintetizan bassianolida. En ningún caso se produjo la beauvericina. La mortalidad por conidias en larvas de Spodoptera exigua y S. frugiperda fue variable, pero las cepas 1512, 2253 y 2857 causaron las mayores mortalidades (44 % en promedio). El extracto con bassianolida inyectado (1 mg/mL) causó 26 % de mortalidad en larvas de S. exigua. La falta de producción de beauvericina, con excepción de la cepa 1149, puede deberse al requerimiento de otro tipo de condiciones de cultivo que estimulen la expresión de los genes. Hasta ahora no se observa correlación entre la actividad patogénica del hongo y la presencia o ausencia de estos metabolitos secundarios.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Beauveria bassiana is an entomopathogenic fungus that produces secondary metabolites as virulence factors during the pathogenic process in insects. In this study, eleven strains of B. bassiana were analyzed to determine the presence of the bbBeas and bbBsls genes that produce beauvericin and bassianolide non-ribosomal cyclooligomeric depsypeptides, respectively. The genes were characterized by PCR and DNA sequencing. The presence of beauvericin and bassianolide from mycelial extracts were determined by mass spectrometry. The results indicated that with the exception of strain 2857, they all possess both genes and synthesized bassianolide. Beauvericin was not produced in any case. Mortality caused by conidia in Spodoptera exigua and S. frugiperda neonate larvae was variable. Strains 1512, 2253 and 2857 caused significantly higher mortalities (44 % mortality on average). The bassianolide extract injected (1 mg/mL) caused 26 % mortality in S. exigua. The lack of beauvericin production, with the exception of strain 1149, may be due to the requirement of other culture conditions that stimulate the expression of the genes. So far, no correlation is observed between the pathogenic activity of the fungus, and the presence or absence of these secondary metabolites.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[Péptidos bioactivos]]></kwd>
<kwd lng="es"><![CDATA[Metabolito secundario]]></kwd>
<kwd lng="es"><![CDATA[Entomopatógeno]]></kwd>
<kwd lng="es"><![CDATA[Insecto plaga]]></kwd>
<kwd lng="en"><![CDATA[Bioactive peptides]]></kwd>
<kwd lng="en"><![CDATA[Secondary metabolite]]></kwd>
<kwd lng="en"><![CDATA[Entomopathogen]]></kwd>
<kwd lng="en"><![CDATA[Insect pest]]></kwd>
</kwd-group>
</article-meta>
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