<?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>0123-3475</journal-id>
<journal-title><![CDATA[Revista Colombiana de Biotecnología]]></journal-title>
<abbrev-journal-title><![CDATA[Rev. colomb. biotecnol]]></abbrev-journal-title>
<issn>0123-3475</issn>
<publisher>
<publisher-name><![CDATA[Instituto de Biotecnología, Universidad Nacional de Colombia]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S0123-34752015000200075</article-id>
<article-id pub-id-type="doi">10.15446/rev.colomb.biote.v17n2.54277</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Standardization of the disinfection protocol for the micropropagation of Aspidosperma polyneuron]]></article-title>
<article-title xml:lang="es"><![CDATA[Estandarización del protocolo de desinfección para la micropropagación de Aspidosperma polyneuron]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[García Lozano]]></surname>
<given-names><![CDATA[Diana Lorena]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Mesa López]]></surname>
<given-names><![CDATA[Neftalí]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Ocampo Guerrero]]></surname>
<given-names><![CDATA[Martha Lily]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad del Tolima  ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad del Tolima Facultad de Ciencias ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<aff id="Af3">
<institution><![CDATA[,Universidad del Tolima Facultad de Ciencias ]]></institution>
<addr-line><![CDATA[ ]]></addr-line>
<country>Colombia</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>07</month>
<year>2015</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>07</month>
<year>2015</year>
</pub-date>
<volume>17</volume>
<numero>2</numero>
<fpage>75</fpage>
<lpage>83</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_arttext&amp;pid=S0123-34752015000200075&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_abstract&amp;pid=S0123-34752015000200075&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.co/scielo.php?script=sci_pdf&amp;pid=S0123-34752015000200075&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract Aspidosperma polyneuron is a species native to the Neotropics, in countries like Colombia, Venezuela, Peru, Brazil, Argentina and Paraguay, typical of semi-deciduous forests, catalogued since 1998 by the IUCN as "Endangered (EN)", because its natural populations were subjected to an intense exploitation for timber and its habitat was seriously degraded by agricultural and silvopastoral activities. The difficulties for its natural regeneration and the rooting of cuttings, make the in vitro culture an efficient tool to counteract the reproductive difficulties that it presents. However, the presence of pollutants that affect the viability of the explants needs the development of protocols that allow the in vitro establishment of this species. The objective of this research was to achieve aseptic establishment and the induction of callogenesis in explants of A. polyneuron, by evaluating different disinfection treatments. The expants were obtained from individuals of natural regeneration, in the Municipality of Armero in the Department of Tolima, which were immersed in distilled water with a drop of Tween® 80 for each 100 ml, for 10 minutes and then rinsed with sterile distilled water. There were used as disinfectant agents, sodium hypochlorite and mercury dichloride in different concentrations and times of immersion. Among the used explants: buds, nodal segments and leaf blades, the last one was selected for its capacity of producing friable and green callosity, for which a disinfection with mercury dichloride (HgCl2) 0.125% for 10 minutes was enough for contamination control and low indexes of oxidation.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen Aspidosperma polyneuron es un especie nativa de la región neotropical, en países como Colombia, Venezuela, Perú, Brasil, Argentina y Paraguay, propio de bosques semideciduos, catalogada desde 1998 por la UICN como "En Peligro (EN)", debido a que sus poblaciones naturales fueron sometidas a una intensa explotación con fines madereros y su hábitat se vio seriamente degradado por actividades agrícolas y silvopastoriles. Las dificultades para su regeneración natural y el enraizamiento de las estacas, hace que el cultivo in vitro sea una eficaz herramienta para contrarrestar las dificultades reproductivas que presenta. Sin embargo, la presencia de contaminantes que afectan la viabilidad de los explantes, precisa el desarrollo de protocolos que permitan el establecimiento in vitro de la especie. El objetivo de la presente investigación fue lograr el establecimiento aséptico y la inducción de la callogénesis en explantes de A. polyneuron, mediante la evaluación de diferentes tratamientos de desinfección. Los explantes se obtuvieron de individuos de regeneración natural, en el municipio de Armero, departamento del Tolima, los cuales se sumergieron en agua destilada con una gota de Tween® 80 por cada 100 ml, durante 10 minutos y lavados con agua destilada estéril. Se utilizaron como agentes desinfectantes, el hipoclorito de sodio y el dicloruro de mercurio a distintas concentraciones y tiempos de inmersión. De los explantes utilizados: ápices, segmentos nodales y láminas foliares, este último fue seleccionado por su capacidad de producir callos friables de color verde, para lo cual una desinfección con dicloruro de mercurio (HgCl2) al 0.125% durante 10 minutos fue suficiente para el control de la contaminación y bajos índices de oxidación.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[in vitro]]></kwd>
<kwd lng="en"><![CDATA[mercury dichloride]]></kwd>
<kwd lng="en"><![CDATA[endogen and exogen contamination]]></kwd>
<kwd lng="en"><![CDATA[forestal species]]></kwd>
<kwd lng="es"><![CDATA[in vitro]]></kwd>
<kwd lng="es"><![CDATA[dicloruro de mercurio]]></kwd>
<kwd lng="es"><![CDATA[contaminación endógena y exógena. especie forestal]]></kwd>
</kwd-group>
</article-meta>
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