Bacterias halotolerantes/alcalofilas productoras de acido indol acético (AIA) asociadas a Arthrospira platensis (Cyanophyceae)

<p class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><strong><span style="font-size: 10.0pt; font-family: " lang="EN-US">Título en ingles: Halotolerant alkalophilic and indolacetic acid producing acid producing bacteria associated with </span></strong><strong><em><span style="font-size: 10.0pt; font-family: " lang="EN-US">Arthrospira platensis </span></em></strong><strong><span style="font-size: 10.0pt; font-family: " lang="EN-US">(Cyanophyceae)</span></strong></p> <p class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><strong><span style="font-size: 10.0pt; font-family: ">Resumen: </span></strong><span style="font-size: 10.0pt; font-family: ">Este trabajo tuvo como propósito contribuir al conocimiento de la interacción entre la cianobacteria alcalófila <em>Arthrospira platensis </em>y las bacterias que crecen asociadas a su mucilago. Se desarrolló un  medio de cultivo heterotrófico en el cual se aislaron cinco cepas bacterianas asociadas a un monocultivo de <em>A. platensis</em>. Se determinó la capacidad de estas cinco cepas para producir ácido 3- indol acético (AIA). La tipificación molecular de los aislamientos bacterianos permitió identificarlos como <em>Exiguobacterium aurantiacum</em> str. </span><span style="font-size: 10.0pt; font-family: " lang="EN-US">DSM 20416, <em>Xanthomonas </em>sp. ML-122, <em>Halomonas </em>sp<em>.</em> Ap-5, <em>Bacillus okhensis </em>str.  </span><span style="font-size: 10.0pt; font-family: ">Kh10-101, <em>Indibacter alkaliphilus</em>, type str. LW1T; todas las cepas bacterianas obtenidas  son halotolerantes, alcalófilas y productoras de AIA. Los resultados aportan evidencia para sugerir una interacción benéfica entre <em>A. platensis </em>y sus bacterias asociadas,  quizá como estrategia evolutiva  de cooperación para desarrollarse en  un ambiente hipersalino.    </span></p> <p class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><strong><span style="font-size: 10.0pt; font-family: ">Palabras claves:</span></strong><span style="font-size: 10.0pt; font-family: "> <em>Bacillus okhensis,</em> <em>Exiguobacterium aurantiacum, Halomonas </em>sp<em>., Indibacter alkaliphilus. </em></span><em><span style="font-size: 10.0pt; font-family: " lang="EN-US">Xanthomonas </span></em><span style="font-size: 10.0pt; font-family: " lang="EN-US">sp.<em> </em></span></p> <p class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><strong><span style="font-size: 10.0pt; font-family: " lang="EN-US">Abstract: </span></strong><span style="font-size: 10.0pt; font-family: " lang="EN-US">The aim of this study was contribute to knowledge over alkalophilic cianobacteryum  <em>Arthrospira platensis</em>  and their  interaction with some associated bacteria growing in their mucilage. Heterotrophic culture medium was designed, in this medium were isolated five bacterial strains associated to single culture of <em>A. platensis</em>. It was measured the 3-indol acetic acid (IAA) production by these bacterial strains. Molecular typing allowed identify these bacterial strains like <em>Exiguobacterium aurantiacum</em> str. DSM 20416, <em>Xanthomonas </em>sp. ML-122, <em>Halomonas </em>sp<em>.</em> Ap-5, <em>Bacillus okhensis </em>str. Kh10-101, <em>Indibacter alkaliphilus</em>, type str. LW1T; all these bacteria are halotolerant, alkalophilic and IAA producer.  The findings allow suggest a beneficial interaction between<em> A. platensis</em> and their associated bacteria, maybe as evolutionary strategy of cooperation to grow and develop in  hypersaline environments. </span></p> <p class="MsoNormal" style="margin-bottom: 0.0001pt; text-align: justify;"><strong><span style="font-size: 10.0pt; font-family: " lang="EN-US">Key words:</span></strong><span style="font-size: 10.0pt; font-family: " lang="EN-US"> <em>Bacillus okhensis,</em> <em>Exiguobacterium aurantiacum, Halomonas </em>sp<em>., Indibacter alkaliphilus.Xanthomonas </em>sp.<em> </em></span></p>