<div dir="ltr"><div class="gmail_quote"><div dir="ltr"><div style="font-family:tahoma,sans-serif"><div><br><table cellspacing="0" cellpadding="0" width="100%" bgcolor="#474444" style="font-family:Arial,Helvetica,sans-serif"><tbody><tr><td style="font-size:0px;height:33px;line-height:0"></td></tr><tr><td valign="top"><table cellspacing="0" cellpadding="0" width="600" align="center" border="0" style="width:600px;margin:0px auto"><tbody><tr><th style="border-width:medium;border-style:none;border-color:initial;width:600px;font-weight:normal;padding:0px;text-align:left;background-color:rgb(254,251,251)"><table cellspacing="0" cellpadding="0" align="left" style="width:600px"><tbody><tr height="44" style="height:44px"><th style="border-width:medium;border-style:none;border-color:initial;width:477px;vertical-align:middle;font-weight:normal;padding:10px 0px 0px 10px;text-align:left;background-color:rgb(66,176,91)"><p align="left" style="margin-bottom:1em;font-size:14px;font-family:tahoma,geneva,sans-serif;color:rgb(253,251,251);margin-top:0px;line-height:18px;background-color:transparent"><strong> <span>Seminario</span> <span>IFEVA</span></strong></p></th><th style="border-width:medium;border-style:none;border-color:initial;width:103px;vertical-align:middle;font-weight:normal;padding:0px 5px;text-align:left;background-color:transparent"><div style="padding:10px;text-align:right"><table cellspacing="0" cellpadding="0" border="0" style="display:inline-block"><tbody><tr><td style="padding-right:5px"><a href="https://twitter.com/ifevaok?ref_src=twsrc%5Etfw%7Ctwcamp%5Eembeddedtimeline%7Ctwterm%5Eprofile%3Aifevaok&ref_url=http%3A%2F%2Fwww.ifeva.edu.ar%2Findex.tw.html" target="_blank"><img title="Twitter" alt="Twitter" src="https://mailchef.s3.amazonaws.com/uploads/mailstyler/images/478A2A14-0536-35C1-A7E4-6A014235947D_Image_1_9f1117f4-4654-4d62-878f-885c62b8fa59.png" width="24" 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style="border-width:medium;border-style:none;border-color:initial;display:block"></td></tr></tbody></table></td></tr></tbody></table></th></tr></tbody></table></th></tr><tr><th style="border-width:medium;border-style:none;border-color:initial;width:600px;font-weight:normal;padding:0px;text-align:left;background-color:rgb(254,251,251)"><table cellspacing="0" cellpadding="0" align="left" style="width:600px"><tbody><tr height="76" style="height:76px"><th style="border-width:medium;border-style:none;border-color:initial;width:326px;vertical-align:middle;font-weight:normal;padding:10px 10px 0px 20px;text-align:left;background-color:rgb(243,54,62)"><p align="left" style="margin-bottom:1em;font-size:14px;color:rgb(253,251,251);margin-top:0px;line-height:18px;background-color:transparent"><strong><font face="tahoma, geneva, sans-serif">VIERNES</font><br><font face="tahoma, sans-serif">02</font><font face="tahoma, geneva, sans-serif"> de Diciembre</font></strong><strong style="background-color:transparent"><font face="tahoma, geneva, sans-serif"> </font><font face="tahoma, sans-serif">2</font><font face="tahoma, geneva, sans-serif">022</font></strong></p><p align="left" style="margin-bottom:1em;font-size:14px;color:rgb(253,251,251);margin-top:0px;line-height:18px;background-color:transparent"><strong><font face="tahoma, geneva, sans-serif">12.00 hs</font></strong></p></th><th style="border-width:medium;border-style:none;border-color:initial;width:244px;vertical-align:middle;padding:10px 0px 0px;text-align:left;background-color:rgb(108,108,108)"><p align="center" style="font-weight:normal;margin-bottom:1em;font-size:14px;font-family:tahoma,geneva,sans-serif;color:rgb(56,56,56);text-align:center;margin-top:0px;line-height:18px;background-color:transparent"><br></p><p align="center" style="font-weight:normal;margin-bottom:1em;font-size:14px;font-family:tahoma,geneva,sans-serif;color:rgb(56,56,56);text-align:center;margin-top:0px;line-height:18px;background-color:transparent"><br></p><p align="center" style="margin-bottom:1em;font-size:14px;font-family:tahoma,geneva,sans-serif;color:rgb(56,56,56);text-align:center;margin-top:0px;line-height:18px;background-color:transparent"><a title="" href="https://www.youtube.com/channel/UCCC_QmqL9yuKBnZ6p4mnxBw" style="color:rgb(253,251,251);background-color:transparent;text-decoration-line:none" target="_blank"><font color="#fdfbfb"><span style="font-weight:normal">Presencial: </span>SUM </font><span style="font-weight:normal"><span>IFEVA</span></span></a><br></p><p align="center" style="margin-bottom:1em;font-size:14px;font-family:tahoma,geneva,sans-serif;text-align:center;margin-top:0px;line-height:18px;background-color:transparent"><a title="" href="https://www.youtube.com/channel/UCCC_QmqL9yuKBnZ6p4mnxBw" style="color:rgb(253,251,251);background-color:transparent;font-weight:normal;text-decoration-line:none" target="_blank"><font color="#fdfbfb">Virtual: </font><strong>YouTube</strong><font color="#fdfbfb"> Canal </font><strong><span>IFEVA</span></strong></a><br></p><p align="center" style="margin-bottom:1em;font-size:14px;font-family:tahoma,geneva,sans-serif;text-align:center;margin-top:0px;line-height:18px;background-color:transparent"><br></p></th></tr></tbody></table></th></tr><tr><th style="border-width:medium;border-style:none;border-color:initial;width:600px;font-weight:normal;padding:0px;text-align:left;background-color:rgb(254,251,251)"><table cellspacing="0" cellpadding="0" align="left" style="width:600px"><tbody><tr height="121" style="height:121px"><th style="border-width:medium;border-style:none;border-color:initial;width:600px;vertical-align:middle;font-weight:normal;padding:0px;text-align:left;background-color:transparent"><table cellspacing="0" cellpadding="0" align="center" border="0" style="margin:0px auto"><tbody><tr><td align="center" style="padding:0px"><table cellspacing="0" cellpadding="0" border="0"><tbody><tr><td style="border-width:medium;border-style:none;border-color:initial;background-color:transparent"><img alt="" src="https://mailchef.s3.amazonaws.com/uploads/mailstyler/images/A1D4E880-2191-4DD7-2282-E4EBD8D61287_Image_5_91564d99-8f65-4b8d-9d26-1320ac7ed277.jpg" width="600" hspace="0" vspace="0" style="border-width:medium;border-style:none;border-color:initial;display:block"></td></tr></tbody></table></td></tr></tbody></table></th></tr></tbody></table></th></tr><tr><th style="border-width:medium;border-style:none;border-color:initial;width:600px;font-weight:normal;padding:10px 0px 5px;text-align:left;background-color:rgb(253,251,251)"><table cellspacing="0" cellpadding="0" align="left" style="width:600px"><tbody><tr height="126" style="height:126px"><th style="border-width:medium;border-style:none;border-color:initial;width:54px;vertical-align:top;font-weight:normal;padding:10px 5px 5px;text-align:left;background-color:transparent"><span class="gmail_default" style="font-family:tahoma,sans-serif"></span><table cellspacing="0" cellpadding="0" align="center" border="0" style="margin:0px auto"><tbody><tr><td align="center" style="padding:0px"><table cellspacing="0" cellpadding="0" border="0"><tbody><tr><td style="border-width:medium;border-style:none;border-color:initial;background-color:transparent"><img alt="" src="https://mailchef.s3.amazonaws.com/uploads/mailstyler/images/5A4A5834-3F9A-6A31-826B-CB9282750DB7_Image_6_f652f2ce-f80b-4f92-bd91-eb57b875ac83.png" width="18" hspace="0" vspace="0" style="border-width:medium;border-style:none;border-color:initial;display:block"></td></tr></tbody></table></td></tr></tbody></table></th><th style="border-width:medium;border-style:none;border-color:initial;width:526px;vertical-align:top;padding:5px"><font size="6">Regulación del mutualismo defensivo entre Festuca arundinacea y Epichloë coenophiala a través de la concentración foliar de fósforo. <br></font></th></tr></tbody></table></th></tr><tr><th style="border-width:medium;border-style:none;border-color:initial;width:600px;font-weight:normal;padding:5px 0px;text-align:left;background-color:rgb(254,251,251)"><table cellspacing="0" cellpadding="0" align="left" style="width:600px"><tbody><tr height="564" style="height:564px"><th style="border-width:medium;border-style:none;border-color:initial;width:570px;vertical-align:top;padding:10px 15px;text-align:left;background-color:transparent"><p align="left" style="margin-bottom:1em;margin-top:0px;line-height:20px;background-color:transparent"><font size="4"><span style="font-family:tahoma,geneva,sans-serif;color:rgb(66,176,91)">Autor<span class="gmail_default" style="font-family:tahoma,sans-serif">es</span>:</span><font color="#383838"><font face="tahoma, geneva, sans-serif"><span style="font-weight:normal"> </span></font></font><font style="background-color:transparent"><font color="#383838" face="tahoma, sans-serif"><i>Facundo A. Decunta(*</i></font></font></font><font face="tahoma, sans-serif"><i><sup style="color:rgb(0,0,0);background-color:transparent"><span lang="es-ES"><font size="2">1</font></span></sup><span lang="es-ES" style="font-size:large;color:rgb(0,0,0);background-color:transparent">) </span></i><span lang="es-ES" style="font-size:large;color:rgb(0,0,0);background-color:transparent;font-weight:normal">Pamela Graff</span><sup style="color:rgb(0,0,0);background-color:transparent;font-weight:normal"><span lang="es-ES"><font size="2">1</font></span></sup><span lang="es-ES" style="font-size:large;color:rgb(0,0,0);background-color:transparent;font-weight:normal">, </span><span style="font-size:large;background-color:transparent;font-weight:normal">Luis I. Perez</span></font><sup style="background-color:transparent;font-family:tahoma,sans-serif;color:rgb(0,0,0);font-weight:normal"><span lang="es-ES"><font size="2">1</font></span></sup><span lang="es-ES" style="background-color:transparent;font-family:tahoma,sans-serif;font-size:large;color:rgb(0,0,0);font-weight:normal">, </span><font face="tahoma, sans-serif" style="background-color:transparent;font-weight:normal"><font size="4"><span style="background-color:transparent">y Pedro E. Gundel</span></font></font><sup style="background-color:transparent;font-family:tahoma,sans-serif;color:rgb(0,0,0);font-weight:normal"><span lang="es-ES"><font size="2">1,2</font></span></sup><font face="tahoma, sans-serif" style="background-color:transparent;font-weight:normal"><font size="4"><span style="background-color:transparent">.</span></font></font><span style="background-color:transparent;font-family:arial,sans-serif;font-style:italic;font-weight:normal"><font size="4"> </font></span></p>
<p align="left" style="margin-bottom:1em;margin-top:0px;line-height:20px;background-color:transparent"><font size="4"><font style="background-color:transparent;color:rgb(56,56,56);font-family:tahoma,geneva,sans-serif"><span style="background-color:transparent;font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;color:rgb(34,34,34)">(*)<span style="font-weight:normal;font-style:italic"> Expositor</span></span></font></font></p><p align="left" style="margin-bottom:1em;margin-top:0px;line-height:20px;background-color:transparent"><strong style="background-color:transparent;color:rgb(56,56,56)"><span style="color:rgb(66,176,91)"><font face="tahoma, geneva, sans-serif" style="font-size:large">Filiaci</font><font face="tahoma, sans-serif" style="font-size:large">ó</font><font face="tahoma, geneva, sans-serif" style="font-size:large">n</font><font face="tahoma, geneva, sans-serif"><font size="4">: </font></font></span></strong><span style="background-color:transparent;font-weight:normal"><font face="tahoma, sans-serif" size="4">(1) Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura, UBA-CONICET, Buenos Aires, Argentina</font></span></p><p align="left" style="margin-bottom:1em;margin-top:0px;line-height:20px;background-color:transparent"><font face="tahoma, sans-serif" size="4"><span style="background-color:transparent;font-weight:normal">(2) Centro de Ecología Integrativa, Instituto de Ciencias Biológicas, Universidad de Talca, Talca, </span><span style="background-color:transparent;font-weight:normal">Chile</span></font></p><p align="left" style="margin-bottom:1em;margin-top:0px;line-height:20px;background-color:transparent"><font size="4" style="background-color:transparent;font-weight:normal"><strong><span style="color:rgb(66,176,91)"><font face="tahoma, geneva, sans-serif"><br></font></span></strong></font></p><p align="left" style="margin-bottom:1em;margin-top:0px;line-height:20px;background-color:transparent"><font size="4" style="background-color:transparent;font-weight:normal"><strong><span style="color:rgb(66,176,91)"><font face="tahoma, geneva, sans-serif">Resumen: </font></span></strong></font><span style="background-color:transparent;font-weight:normal"><font size="4">A partir de su introducción en los pastizales pampeanos, Festuca arundinacea (festuca alta) se ha naturalizado y expandido, desplazando a otras especies nativas. Parte de su éxito como invasora se asocia a la relación simbiótica que establece con el hongo Epichloë coenophiala. El beneficio más conocido que brindan estos hongos es la producción de alcaloides que resultan tóxicos para los herbívoros. Sin embargo, se ha observado que la producción de algunos de estos alcaloides depende de la concentración de nutrientes en las hojas. En un estudio realizado a campo por Graff y colaboradores (Journal of Ecology, 2020), se observó que las plantas de festuca con alta concentración foliar de fósforo producían menos ergovalina (uno de los alcaloides fúngicos) y eran más consumidas por insectos. Este trabajo presentó evidencias acerca del rol del fósforo como modulador de esta simbiosis defensiva, pero sobre todo dejó algunas preguntas sin responder: ¿El aumento en la concentración de fósforo disminuye la producción de ergovalina? ¿Afecta de forma directa al hongo endófito o solo disminuye la producción del alcaloide? ¿Afecta de igual manera a otros alcaloides? Estas preguntas motivaron un experimento cuyos resultados presentaremos en este seminario.</font></span></p><p style="margin-bottom:0.5cm;line-height:13px"><br></p><p align="left" style="margin-bottom:1em;margin-top:0px;line-height:20px;background-color:transparent"><font size="4" style="background-color:transparent;color:rgb(56,56,56);font-family:tahoma,geneva,sans-serif;font-weight:normal"><strong><span style="color:rgb(66,176,91)">Palabras claves:</span></strong></font><span style="font-size:12pt;font-weight:normal;background-color:transparent"> </span><font size="4"><span style="font-weight:normal;background-color:transparent">A</span><span style="background-color:transparent;font-weight:normal">lcaloides fúngicos, F</span><span style="background-color:transparent;font-weight:normal">ósforo foliar, R</span><span style="background-color:transparent;font-weight:normal">esistencia a herbívoros, </span><span style="background-color:transparent;font-weight:normal">Simbiosis planta-endófito</span></font></p></th></tr></tbody></table></th></tr><tr><th style="border-width:medium;border-style:none;border-color:initial;width:600px;font-weight:normal;padding:5px 0px;text-align:left;background-color:rgb(253,251,251)"><table cellspacing="0" cellpadding="0" style="width:600px"><tbody><tr height="163" style="height:163px"><th style="text-align:right;border-width:medium;border-style:none;border-color:initial;width:140px;vertical-align:top;font-weight:normal;padding:5px;background-color:transparent"><img src="cid:ii_lb0ov3l40" alt="foto_decunta2.jpg" width="116" height="141" style="margin-right:0px"><br></th><th style="border-width:medium;border-style:none;border-color:initial;width:440px;vertical-align:top;padding:5px;text-align:left;background-color:transparent"><p align="left" style="margin-bottom:1em;color:rgb(56,56,56);margin-top:0px;line-height:18px;background-color:transparent"><font color="#383838" style="background-color:transparent;font-weight:normal"><font face="tahoma, sans-serif"><b><span style="background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial">Facundo Alcides Decunta, </span></b></font></font><span style="background-color:transparent;font-weight:normal;color:rgb(34,34,34)">es Licenciado en Ciencias Ambientales por la Facultad de Agronomía de la UBA y actual becario doctoral de CONICET. Su tema de estudio es la simbiosis entre hongos endófitos del género Epichloë y pastos de clima templado. En su doctorado se encuentra estudiando el rol de este mutualismo defensivo frente a herbívoros subterráneos.</span><b style="font-family:tahoma,sans-serif;background-color:transparent"><span style="background-image:initial;background-position:initial;background-size:initial;background-repeat:initial;background-origin:initial;background-clip:initial"> </span></b></p></th></tr></tbody></table></th></tr><tr><th style="border-width:medium;border-style:none;border-color:initial;width:600px;font-weight:normal;padding:0px;text-align:left;background-color:rgb(229,229,229)"><table cellspacing="0" cellpadding="0" align="left" style="width:600px"><tbody><tr height="93" style="height:93px"><th style="border-width:medium;border-style:none;border-color:initial;width:570px;vertical-align:middle;padding:10px 10px 0px 20px;text-align:left;background-color:transparent"><p align="left" style="margin-bottom:1em;font-family:verdana,arial,helvetica,sans-serif;color:rgb(56,56,56);margin-top:0px;line-height:18px;background-color:transparent"><span style="font-weight:normal;font-size:14px;line-height:18px"><strong>Certificados:</strong> <span class="gmail_default" style="font-family:tahoma,sans-serif"></span></span><span style="font-weight:normal;background-color:transparent;font-family:Roboto,RobotoDraft,Helvetica,Arial,sans-serif;color:rgb(34,34,34)">los alumnos que necesiten certificar su asistencia, deberán enviar </span><span style="font-weight:normal;background-color:transparent">su nombre y DNI</span><span class="gmail_default" style="font-weight:normal;background-color:transparent;font-family:tahoma,sans-serif"> </span><span class="gmail_default" style="background-color:transparent;font-family:tahoma,sans-serif"><span style="font-weight:normal">al moderador (</span><a href="mailto:mtexeira@agro.uba.ar" style="font-weight:normal" target="_blank">mtexeira@agro.uba.ar</a><span style="font-weight:normal">) </span>durante el transcurso del <span>seminario</span> o en la hora posterior a la finalización del mismo</span><span style="font-weight:normal;background-color:transparent">. </span></p></th></tr></tbody></table></th></tr><tr><th style="border-width:medium;border-style:none;border-color:initial;width:600px;font-weight:normal;padding:0px;text-align:left;background-color:rgb(66,176,91)"><table cellspacing="0" cellpadding="0" align="left" style="width:600px"><tbody><tr height="62" style="height:62px"><th style="border-width:medium;border-style:none;border-color:initial;width:560px;vertical-align:top;font-weight:normal;padding:25px 20px 10px;text-align:left;background-color:transparent"><p align="center" style="margin-bottom:1em;font-size:12px;font-family:tahoma,geneva,sans-serif;color:rgb(9,9,9);text-align:center;margin-top:0px;line-height:15px;background-color:transparent"><strong><span style="color:rgb(255,255,255)">Instituto de Investigaciones Fisiológicas y Ecológicas Vinculadas a la Agricultura</span></strong></p></th></tr></tbody></table></th></tr><tr><th style="border-width:medium;border-style:none;border-color:initial;width:600px;font-weight:normal;padding:1px 0px;text-align:left;background-color:transparent"><table cellspacing="0" cellpadding="0" align="left" style="width:600px"><tbody><tr height="66" style="height:66px"><th style="border-width:medium;border-style:none;border-color:initial;width:590px;vertical-align:middle;font-weight:normal;padding:5px;text-align:left;background-color:transparent"><p align="center" style="margin-bottom:1em;font-size:12px;font-family:tahoma,geneva,sans-serif;color:rgb(253,251,251);text-align:center;margin-top:0px;line-height:15px;background-color:transparent"><br><span>IFEVA</span> - Facultad de Agronomía - Universidad de Buenos Aires<br> Av. San Martín 4453 - C1417DSE - Buenos Aires - Argentina</p></th></tr></tbody></table></th></tr></tbody></table></td></tr></tbody></table></div></div><div><br></div></div>
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