<?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>0258-5936</journal-id>
<journal-title><![CDATA[Cultivos Tropicales]]></journal-title>
<abbrev-journal-title><![CDATA[cultrop]]></abbrev-journal-title>
<issn>0258-5936</issn>
<publisher>
<publisher-name><![CDATA[Ediciones INCA]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0258-59362021000300005</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Inducción de señales en Rhizobium leguminosarum bv. viciae y su actividad biológica en arveja (Pisum sativum L.)]]></article-title>
<article-title xml:lang="en"><![CDATA[Induction of signals in Rhizobium leguminosarum bv. viciae and its biological activity in pea (Pisum sativum L.)]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Nápoles-García]]></surname>
<given-names><![CDATA[María Caridad]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Cabrera-Pino]]></surname>
<given-names><![CDATA[Juan Carlos]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Wegria]]></surname>
<given-names><![CDATA[Guilleaume]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Onderwater]]></surname>
<given-names><![CDATA[Rob]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Wattiez]]></surname>
<given-names><![CDATA[Ruddy]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Costales-Menéndez]]></surname>
<given-names><![CDATA[Daimy]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Hernández-Forte]]></surname>
<given-names><![CDATA[Ionel]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Morales-Mena]]></surname>
<given-names><![CDATA[Belkis]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Rossi]]></surname>
<given-names><![CDATA[Alejandro]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[González-Anta]]></surname>
<given-names><![CDATA[Gustavo]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Instituto Nacional de Ciencias Agrícolas (INCA)  ]]></institution>
<addr-line><![CDATA[San José de las Lajas Mayabeque]]></addr-line>
<country>Cuba</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Fyteko  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Belgium</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Unité Biotechnologie-Materia Nova A.S.B.L.  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Belgium</country>
</aff>
<aff id="Af4">
<institution><![CDATA[,University of Mons Institute Biosciences ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Belgium</country>
</aff>
<aff id="Af5">
<institution><![CDATA[,Empresa Rizobacter S.A.  ]]></institution>
<addr-line><![CDATA[ Buenos Aires]]></addr-line>
<country>Argentina</country>
</aff>
<aff id="Af6">
<institution><![CDATA[,Empresa Indrasa Biotecnología S.A.  ]]></institution>
<addr-line><![CDATA[Río Cuarto Córdoba]]></addr-line>
<country>Argentina</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>09</month>
<year>2021</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>09</month>
<year>2021</year>
</pub-date>
<volume>42</volume>
<numero>3</numero>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_arttext&amp;pid=S0258-59362021000300005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_abstract&amp;pid=S0258-59362021000300005&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://scielo.sld.cu/scielo.php?script=sci_pdf&amp;pid=S0258-59362021000300005&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[RESUMEN La arveja es una planta versátil, utilizada de diferentes formas y para distintos propósitos, por su elevado valor nutritivo. Su interacción simbiótica con bacterias de la familia de los rizobios garantiza importantes cantidades de nitrógeno, a partir de la fijación biológica, lo que le permite crecer en ambientes carentes de este elemento. La importancia agronómica y ambiental de esta simbiosis ha exigido el perfeccionamiento de las tecnologías de producción y aplicación de inoculantes, por lo que este trabajo se propuso evaluar el efecto de la inducción de una cepa de Rhizobium leguminosarum bv. viciae en la generación de señales en el inoculante y su actividad biológica sobre plantas de arveja. Se utilizó como inductor la daidzeína a una concentración final de 5 µM. La fracción lipídica en los inóculos fue extraída con n-butanol y analizada por cromatografía líquida de alta resolución y cromatografía gaseosa acoplada a un espectrómetro de masas. La actividad biológica se evaluó en un experimento en condiciones controladas, dos experimentos en campo y un ensayo extensivo. Los resultados mostraron que en los inóculos inducidos con el flavonoide se detectó una cantidad y diversidad superior de moléculas relacionadas con la interacción simbiótica. De manera similar, los inóculos inducidos mostraron un efecto positivo superior en la nodulación (14,8 vs 8,7) y el rendimiento de plantas de arveja, con 468 y 125 kg ha-1 de semillas por encima del tratamiento inoculado sin inducir en los experimentos en parcelas y 746 kg ha-1 en el ensayo extensivo.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[ABSTRACT Pea is a versatile plant, used in different ways and for different purposes, due to its high nutritional value. Its symbiotic interaction with bacteria of the rhizobia family guarantees significant amounts of nitrogen, from biological fixation, which allows it to grow in environments lacking this element. The agronomic and environmental importance of this symbiosis has required technology improvement for the production and inoculant application, so this work set out to evaluate the induction effect of a Rhizobium leguminosarum bv. viciae strain in the generation of signals in the inoculant and its biological activity on pea plants. Daidzein was used as an inducer at a final concentration of 5 µM. The lipidic fraction in the inocula was extracted with n-butanol and analyzed by high performance liquid chromatography and gas chromatography coupled to a mass spectrometer. Biological activity was evaluated in one experiment under controlled conditions, two field experiments, and one extensive trial. The results showed that in the inoculant induced with the flavonoid, a higher quantity and diversity of molecules related to the symbiotic interaction was detected. Similarly, the induced inocula showed a higher positive effect on nodulation (14.8 vs 8.7) and the yield of pea plants, with 468 and 125 kg ha-1 of seeds above the inoculated treatment without inducing in the experiments in plots and 746 kg ha-1 in the extensive trial.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[fijación biológica]]></kwd>
<kwd lng="es"><![CDATA[nodulación]]></kwd>
<kwd lng="es"><![CDATA[comunicación]]></kwd>
<kwd lng="es"><![CDATA[legumbres]]></kwd>
<kwd lng="en"><![CDATA[biological fixation]]></kwd>
<kwd lng="en"><![CDATA[nodulation]]></kwd>
<kwd lng="en"><![CDATA[communication]]></kwd>
<kwd lng="en"><![CDATA[legumes]]></kwd>
</kwd-group>
</article-meta>
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