<?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>2007-0934</journal-id>
<journal-title><![CDATA[Revista mexicana de ciencias agrícolas]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. Mex. Cienc. Agríc]]></abbrev-journal-title>
<issn>2007-0934</issn>
<publisher>
<publisher-name><![CDATA[Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S2007-09342021000300541</article-id>
<article-id pub-id-type="doi">10.29312/remexca.v12i3.2643</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Primer reporte de Bacillus spp. entomopatógenas al Melanaphis sacchari Zehntner (Hemiptera: Aphididae)]]></article-title>
<article-title xml:lang="en"><![CDATA[First report of Bacillus spp. entomopathogenic to Melanaphis sacchari Zehntner (Hemiptera: Aphididae)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Toledo-Hernández]]></surname>
<given-names><![CDATA[Erubiel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Olivera-Cruz]]></surname>
<given-names><![CDATA[Stazie Kimberly]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Toribio-Jiménez]]></surname>
<given-names><![CDATA[Jeiry]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Romero-Ramírez]]></surname>
<given-names><![CDATA[Yanet]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Lormendez]]></surname>
<given-names><![CDATA[Caleb C.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Peña-Chora]]></surname>
<given-names><![CDATA[Guadalupe]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Autónoma de Guerrero  ]]></institution>
<addr-line><![CDATA[Chilpancingo Guerrero]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma del Estado de Morelos Centro de Investigaciones Biológicas ]]></institution>
<addr-line><![CDATA[Cuernavaca Morelos]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>05</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>05</month>
<year>2021</year>
</pub-date>
<volume>12</volume>
<numero>3</numero>
<fpage>541</fpage>
<lpage>546</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S2007-09342021000300541&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S2007-09342021000300541&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S2007-09342021000300541&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Debido a la falta de conocimiento de bacterias patógenas a Melanaphis sacchari, el objetivo de este trabajo fue evaluar la patogenicidad de cepas bacterianas contra este áfido. En la Universidad Autónoma de Guerrero en 2019 se llevaron a cabo los bioensayos in vitro. Mediante ingesta en dieta contaminada, se evaluaron cuatro cepas en dos tratamientos de 10 y 100 µg ml-1 de proteína total. Los bioensayos demostraron que las cepas fueron patógenas al áfido, ocasionando una mortalidad a las 48 h de entre el 35 ±8% al 63 ±12% a una concentración de 10 µg ml-1. En tanto que, a una concentración de 100 µg ml-1 la mortalidad fue de alrededor del 48 ±4% al 90 ±7%. Las cepas más virulentas contra el áfido a una concentración de 10 µg ml-1 fueron la ETH-109 y ETH-117, ocasionando una mortalidad de 58 ±8% y 63 ±12%, respectivamente. Mientras que, a la concentración de 100 µg ml-1 la cepa más virulenta fue la ETH-109 causando una mortalidad de 90 ±7%, seguida de la cepa ETH-117 con un 73 ±5% de áfidos muertos.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Due to the lack of knowledge of pathogenic bacteria to Melanaphis sacchari, the objective of this work was to evaluate the pathogenicity of bacterial strains against this aphid. In vitro bioassays were carried out at the Autonomous University of Guerrero in 2019. By intake in a contaminated diet, four strains were evaluated in two treatments of 10 and 100 µg ml-1 of total protein. Bioassays showed that the strains were pathogenic to the aphid, resulting in mortality at 48 h of between 35 ±8% to 63 ±12% at a concentration of 10 µg ml-1. While, at a concentration of 100 µg ml mortality was around 48 ±4% to 90 ±7%. The most virulent strains against the aphid at a concentration of 10 µg ml-1 were ETH-109 and ETH-117, resulting in mortality of 58 ±8% and 63 ±12%, respectively. Whereas, to the concentration of 100 µg ml-1 the most virulent strain was ETH-109 causing mortality of 90 ±7%, followed by the ETH-117 strain with 73 ±5% of dead aphids.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[bacterias]]></kwd>
<kwd lng="es"><![CDATA[entomopatógeno]]></kwd>
<kwd lng="es"><![CDATA[plaga]]></kwd>
<kwd lng="es"><![CDATA[sorgo]]></kwd>
<kwd lng="en"><![CDATA[bacteria]]></kwd>
<kwd lng="en"><![CDATA[entomopathogenic]]></kwd>
<kwd lng="en"><![CDATA[plague]]></kwd>
<kwd lng="en"><![CDATA[sorghum]]></kwd>
</kwd-group>
</article-meta>
</front><back>
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