<?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>S1405-27682024000200197</article-id>
<article-id pub-id-type="doi">10.18387/polibotanica.58.14</article-id>
<title-group>
<article-title xml:lang="en"><![CDATA[Molecular insights into somatic embryogenesis in Agave angustifolia: characterization of the AaSERK gene]]></article-title>
<article-title xml:lang="es"><![CDATA[Conocimientos moleculares sobre la embriogénesis somática en Agave angustifolia: caracterización del gen AaSERK]]></article-title>
</title-group>
<contrib-group>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Reyes-Díaz]]></surname>
<given-names><![CDATA[Jesús Ignacio]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
<contrib contrib-type="author">
<name>
<surname><![CDATA[Arzate-Fernández]]></surname>
<given-names><![CDATA[Amaury Martín]]></given-names>
</name>
<xref ref-type="aff" rid="Aff"/>
</contrib>
</contrib-group>
<aff id="Af1">
<institution><![CDATA[,Universidad Tecnológica del Valle de Toluca Dirección de Procesos Alimentarios y Química Área Biotecnología Unidad Académica de Capulhuac]]></institution>
<addr-line><![CDATA[Lerma ]]></addr-line>
<country>Mexico</country>
</aff>
<aff id="Af2">
<institution><![CDATA[,Universidad Autónoma del Estado de México Centro de Investigación y Estudios Avanzados en Fitomejoramiento Facultad de Ciencias Agrícolas]]></institution>
<addr-line><![CDATA[Toluca Estado de México]]></addr-line>
<country>Mexico</country>
</aff>
<pub-date pub-type="pub">
<day>00</day>
<month>00</month>
<year>2024</year>
</pub-date>
<pub-date pub-type="epub">
<day>00</day>
<month>00</month>
<year>2024</year>
</pub-date>
<numero>58</numero>
<fpage>197</fpage>
<lpage>208</lpage>
<copyright-statement/>
<copyright-year/>
<self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_arttext&amp;pid=S1405-27682024000200197&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_abstract&amp;pid=S1405-27682024000200197&amp;lng=en&amp;nrm=iso"></self-uri><self-uri xlink:href="http://www.scielo.org.mx/scielo.php?script=sci_pdf&amp;pid=S1405-27682024000200197&amp;lng=en&amp;nrm=iso"></self-uri><abstract abstract-type="short" xml:lang="en"><p><![CDATA[Abstract The Agave genus, with 265 species, including 153 natives to Mexico, is of paramount significance in ethnobotanical, ecological, and economic contexts. However, over-exploitation and uncontrolled harvesting of these plants endanger their survival due to the prevention of sexual reproduction. In response, in vitro techniques, such as somatic embryogenesis, have been developed for vegetative propagation and species conservation. Somatic embryogenesis transitions cells to totipotency, driven by specific gene expression, endogenous hormones, and responses to external regulators. This work explores the first molecular insights into somatic embryogenesis in the Agave genus through the isolation and characterization of the AaSERK gene. Receptor-Like Kinases (RLKs) with Leucine-Rich Repeats (LRRs) have crucial roles in cellular signaling across various aspects of plant development, including embryogenesis. The presence of a Serine-Proline-Proline motif (SPP) distinguishes SERK from other RLKs, and its expression signifies embryogenic competence. The results reveal that AaSERK encodes a typical SERK protein with conserved domains, indicating its role in plant development. Phylogenetic analysis suggests that AaSERK shares evolutionary ancestry with SERKs of closely related plant species. These findings shed light on somatic embryogenesis in Agave angustifolia and may enhance the regeneration and transformation processes for the conservation of these valuable plants. Understanding the genetic control of totipotency and the molecular regulation of somatic embryogenesis is vital for advancing plant biotechnology and plant physiology.]]></p></abstract>
<abstract abstract-type="short" xml:lang="es"><p><![CDATA[Resumen El género Agave, con 265 especies, incluidas 153 nativas de México, es de suma importancia en contextos etnobotánicos, ecológicos y económicos. Sin embargo, la sobreexplotación y la recolección incontrolada de estas plantas ponen en peligro su supervivencia debido a la problemática de su reproducción sexual. En respuesta, se han desarrollado técnicas in vitro, como la embriogénesis somática, para la propagación vegetativa y la conservación de especies. La embriogénesis somática hace que las células manifiesten su carácter totipotente, impulsado por la expresión genética específica, hormonas endógenas y respuestas a reguladores externos. Este trabajo explora los primeros conocimientos moleculares sobre la embriogénesis somática en el género Agave a través del aislamiento y caracterización del gen AaSERK. Las quinasas similares a receptores (RLK) con repeticiones ricas en leucina (LRR) desempeñan funciones cruciales en la señalización celular en diversos aspectos del desarrollo de las plantas, incluida la embriogénesis. La presencia de un motivo Serina-Prolina-Prolina (SPP) distingue a las SERK de otras RLK y su expresión significa la adquisición de la competencia embriogénica. Los resultados revelan que AaSERK codifica una proteína SERK típica con dominios conservados, lo que sugiere su papel en el desarrollo de las plantas. El análisis filogenético muestra que AaSERK comparte ascendencia evolutiva con SERK de especies de plantas estrechamente relacionadas. Estos hallazgos arrojan información importante sobre la embriogénesis somática en Agave angustifolia y pueden mejorar los procesos de regeneración y transformación para la conservación de esta valiosa planta. Comprender el control genético de la totipotencia y la regulación molecular de la embriogénesis somática es vital para avanzar en la biotecnología y la fisiología de las plantas.]]></p></abstract>
<kwd-group>
<kwd lng="en"><![CDATA[Somatic embryogenesis]]></kwd>
<kwd lng="en"><![CDATA[Somatic Embryogenesis Receptor-like Kinase gene]]></kwd>
<kwd lng="en"><![CDATA[Agave angustifolia]]></kwd>
<kwd lng="es"><![CDATA[Embriogénesis somática]]></kwd>
<kwd lng="es"><![CDATA[Gen de quinasa similar al receptor de embriogénesis somática]]></kwd>
<kwd lng="es"><![CDATA[Agave angustifolia]]></kwd>
</kwd-group>
</article-meta>
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