<?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>1405-2768</journal-id>
<journal-title><![CDATA[Polibotánica]]></journal-title>
<abbrev-journal-title><![CDATA[Polibotánica]]></abbrev-journal-title>
<issn>1405-2768</issn>
<publisher>
<publisher-name><![CDATA[Instituto Politécnico Nacional, Escuela Nacional de Ciencias Biológicas]]></publisher-name>
</publisher>
</journal-meta>
<article-meta>
<article-id>S1405-27682018000100131</article-id>
<article-id pub-id-type="doi">10.18387/polibotanica.45.10</article-id>
<title-group>
<article-title xml:lang="es"><![CDATA[Cianobacterias y microalgas de biopelículas superficiales de la zona arqueológica de Malinalco, México]]></article-title>
<article-title xml:lang="en"><![CDATA[Cyanobacteria and microalgae from surface biofilm from Malinalco, Mexico, an archaeological site]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Galindo-Alcázar]]></surname>
<given-names><![CDATA[O.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Medina-Jaritz]]></surname>
<given-names><![CDATA[N.B.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Garduño-Solórzano]]></surname>
<given-names><![CDATA[G.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Olvera-Ramírez]]></surname>
<given-names><![CDATA[R.]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,IPN Escuela Nacional de Ciencias Biológicas ]]></institution>
<addr-line><![CDATA[ Ciudad de México]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,UNAM FES-Iztacala Herbario IZTA]]></institution>
<addr-line><![CDATA[ Edo. de México]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2018</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2018</year>
</pub-date>
<numero>45</numero>
<fpage>131</fpage>
<lpage>146</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-27682018000100131&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-27682018000100131&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-27682018000100131&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen: La mayoría de las construcciones del patrimonio arquitectónico construido en roca está en riesgo, no sólo por los daños causados por el paso del tiempo y la exposición a distintas condiciones ambientales, sino también por las alteraciones producidas debido a la colonización de microorganismos (bacterias heterótrofas, cianobacterias, algas y hongos) en su superficie, los cuales inducen en ella un conjunto de procesos que derivan en alteración mecánica y química, a los que se les denomina biodeterioro. El objetivo de este trabajo fue identificar la entidad taxonómica a la que pertenecen los microorganismos fototróficos cultivables que se encontraron en biopelículas superficiales en los monumentos de la zona arqueológica de Malinalco, Estado de México, México, y caracterizar parcialmente las cepas de cianobacterias. El muestreo de las biopelículas se hizo en cuatro de los seis monumentos de dicha zona, en donde se observó crecimiento microbiano se tomó una porción con una espátula y se colocó en recipientes estériles, se cultivaron en medio sólido BG-11 y se aislaron mediante micromanipulación. Se obtuvieron 23 aislados que incluyen Cianobacterias y microalgas, que fueron determinados en 18 géneros de los cuales trece taxones son cianobacterias, siete son clorofitas y tres son carofitas. Los taxones mejor representados para esta zona arqueológica son las cianobacterias filamentosas del Orden Oscillatoriales que fueron encontradas en tres de los cuatro monumentos. Además, se extrajeron y cuantificaron las ficobiliproteínas de seis cepas de ciano-bacterias que presentaron un color pardo intenso debido a la presencia de ficoeritrina. La cepa con un alto contenido de este pigmento fue Pseudanabaena sp. con 0.7 mg/mL, aislada del templo monolítico. En siete cepas de cianobacterias se demostró la presencia de exopolisacáridos (EPS) en alguna de sus formas: cápsula, vaina, mucílago disperso o polisacáridos liberados al medio, mediante la técnica de azul de toluidina y se cuantificó la cantidad de EPS producido por estas cepas.]]></p></abstract>
<abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract: Most constructions of the architectural heritage built on rock are at risk, not only for damage caused by the passage of time and exposure to different environmental conditions, but also by the alterations produced due to the colonization of microorganisms (heterotrophic bacteria, cyanobacteria, algae and fungi) on its surface, which induce in it a set of processes that lead to mechanical and chemical alteration, called biodeterioration. The objective of this work was to identify to which taxonomic entity belong the cultivable phototrophic microorganisms that were found in superficial biofilms on the monuments of the archaeological zone of Malinalco, State of Mexico, Mexico and cyanobacteria partial characterization. Biofilm sampling was done in four of the six monuments of that zone, where microbial growth was observed, a portion was taken with a spatula and placed in sterile containers, cultured in BG-11 solid medium and isolated by micromanipulation. Twenty-three isolates including cyanobacteria an microlagae through literature were identified and grouped into 18 genera, of which thirteen taxa are Cyanobacteria, seven are Chlorophytes and three belong to Charophytes. The best represented taxa for this archaeological zone are the filamentous cyanobacteria of the Order Oscillatoriales that were found in three of the four monuments. In addition, phycobiliproteins were extracted and quantified from six strains of cyanobacteria that showed an intense brown color due to the presence of phycoerythrin. The strain with a high content of this pigment was Pseudanabaena sp. with 0.7 mg / mL, isolated from the monolithic temple. In seven strains of cyanobacteria the presence of exopolysaccharides (EPS) was demonstrated in some of its forms: capsule, sheath (o pod), dispersed mucilage or polysaccharides released into the medium, using the technique of toluidine blue and quantified the amount of EPS produced by these strains.]]></p></abstract>
<kwd-group>
<kwd lng="es"><![CDATA[biodeterioro]]></kwd>
<kwd lng="es"><![CDATA[monumentos arqueológicos]]></kwd>
<kwd lng="es"><![CDATA[cianobacterias]]></kwd>
<kwd lng="es"><![CDATA[biopelículas]]></kwd>
<kwd lng="es"><![CDATA[ficobiliproteínas]]></kwd>
<kwd lng="es"><![CDATA[exopolisacáridos]]></kwd>
<kwd lng="en"><![CDATA[biodeterioration]]></kwd>
<kwd lng="en"><![CDATA[archaeological monuments]]></kwd>
<kwd lng="en"><![CDATA[cyanobacteria]]></kwd>
<kwd lng="en"><![CDATA[biofilms]]></kwd>
<kwd lng="en"><![CDATA[phycobiliproteins]]></kwd>
<kwd lng="en"><![CDATA[exopolysaccharides]]></kwd>
</kwd-group>
</article-meta>
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