In vitro assessment of the effect of mefenoxam-acquired resistance on sporulation in isolates of phytophthora infestans
Phytophthora infestans is an oomycete pathogen that causes potato and tomato late blight disease, a worldwide concern for farmers given its explosive epidemic potential. In order to control the disease, an integral management approach, which includes the use of fungicides, has been implemented. Unfo...
- Autores:
-
Regnier Casasfranco, Melissa
- Tipo de recurso:
- Trabajo de grado de pregrado
- Fecha de publicación:
- 2017
- Institución:
- Universidad de los Andes
- Repositorio:
- Séneca: repositorio Uniandes
- Idioma:
- eng
- OAI Identifier:
- oai:repositorio.uniandes.edu.co:1992/39852
- Acceso en línea:
- http://hdl.handle.net/1992/39852
- Palabra clave:
- Phytophthora infestans
Fungicidas sistémicos
Papas (Tubérculos)
Tomates
Plantas
Microbiología
- Rights
- openAccess
- License
- http://creativecommons.org/licenses/by-nc-sa/4.0/
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| dc.title.es_CO.fl_str_mv |
In vitro assessment of the effect of mefenoxam-acquired resistance on sporulation in isolates of phytophthora infestans |
| title |
In vitro assessment of the effect of mefenoxam-acquired resistance on sporulation in isolates of phytophthora infestans |
| spellingShingle |
In vitro assessment of the effect of mefenoxam-acquired resistance on sporulation in isolates of phytophthora infestans Phytophthora infestans Fungicidas sistémicos Papas (Tubérculos) Tomates Plantas Microbiología |
| title_short |
In vitro assessment of the effect of mefenoxam-acquired resistance on sporulation in isolates of phytophthora infestans |
| title_full |
In vitro assessment of the effect of mefenoxam-acquired resistance on sporulation in isolates of phytophthora infestans |
| title_fullStr |
In vitro assessment of the effect of mefenoxam-acquired resistance on sporulation in isolates of phytophthora infestans |
| title_full_unstemmed |
In vitro assessment of the effect of mefenoxam-acquired resistance on sporulation in isolates of phytophthora infestans |
| title_sort |
In vitro assessment of the effect of mefenoxam-acquired resistance on sporulation in isolates of phytophthora infestans |
| dc.creator.fl_str_mv |
Regnier Casasfranco, Melissa |
| dc.contributor.advisor.none.fl_str_mv |
Danies Turano, Giovanna |
| dc.contributor.author.none.fl_str_mv |
Regnier Casasfranco, Melissa |
| dc.subject.keyword.es_CO.fl_str_mv |
Phytophthora infestans Fungicidas sistémicos Papas (Tubérculos) Tomates Plantas |
| topic |
Phytophthora infestans Fungicidas sistémicos Papas (Tubérculos) Tomates Plantas Microbiología |
| dc.subject.themes.none.fl_str_mv |
Microbiología |
| description |
Phytophthora infestans is an oomycete pathogen that causes potato and tomato late blight disease, a worldwide concern for farmers given its explosive epidemic potential. In order to control the disease, an integral management approach, which includes the use of fungicides, has been implemented. Unfortunately, populations of P. infestans resistant to fungicides have been documented. Furthermore, studies have shown that isolates of P. infestans are able to acquire resistance to mefenoxam in vitro, after a single exposure through sub-lethal concentrations of this widely used fungicide. The aim of this study was to evaluate if there is an effect on sporangial production in isolates of P. infestans that acquire resistance to mefenoxam in vitro. An originally susceptible isolate of P. infestans was exposed to different concentrations of mefenoxam-amended media and compared to a resistant control. Sporangia production was significantly diminished in isolates that acquired resistance. Interestingly, naturally resistant isolates sporulated significantly more in the presence of mefenoxam. Possible implications of the acquisition of resistance on sporangia production are discussed. These results provide further insights into the phenomenon of mefenoxam-acquired resistance |
| publishDate |
2017 |
| dc.date.issued.none.fl_str_mv |
2017 |
| dc.date.accessioned.none.fl_str_mv |
2020-06-10T16:35:39Z |
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2020-06-10T16:35:39Z |
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Trabajo de grado - Pregrado |
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http://purl.org/coar/version/c_970fb48d4fbd8a85 |
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info:eu-repo/semantics/bachelorThesis |
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http://hdl.handle.net/1992/39852 |
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u807290.pdf |
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eng |
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eng |
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http://creativecommons.org/licenses/by-nc-sa/4.0/ |
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18 hojas |
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Universidad de los Andes |
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Microbiología |
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Facultad de Ciencias |
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Departamento de Ciencias Biológicas |
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Al consultar y hacer uso de este recurso, está aceptando las condiciones de uso establecidas por los autores.http://creativecommons.org/licenses/by-nc-sa/4.0/info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Danies Turano, Giovannavirtual::5915-1Regnier Casasfranco, Melissad49c398b-d26c-4610-917d-403e3a00456f6002020-06-10T16:35:39Z2020-06-10T16:35:39Z2017http://hdl.handle.net/1992/39852u807290.pdfinstname:Universidad de los Andesreponame:Repositorio Institucional Sénecarepourl:https://repositorio.uniandes.edu.co/Phytophthora infestans is an oomycete pathogen that causes potato and tomato late blight disease, a worldwide concern for farmers given its explosive epidemic potential. In order to control the disease, an integral management approach, which includes the use of fungicides, has been implemented. Unfortunately, populations of P. infestans resistant to fungicides have been documented. Furthermore, studies have shown that isolates of P. infestans are able to acquire resistance to mefenoxam in vitro, after a single exposure through sub-lethal concentrations of this widely used fungicide. The aim of this study was to evaluate if there is an effect on sporangial production in isolates of P. infestans that acquire resistance to mefenoxam in vitro. An originally susceptible isolate of P. infestans was exposed to different concentrations of mefenoxam-amended media and compared to a resistant control. Sporangia production was significantly diminished in isolates that acquired resistance. Interestingly, naturally resistant isolates sporulated significantly more in the presence of mefenoxam. Possible implications of the acquisition of resistance on sporangia production are discussed. These results provide further insights into the phenomenon of mefenoxam-acquired resistancePhytophthora infestans, el agente causal del tizón tardío de la papa y el tomate, perteneciente al grupo de protistas oomycota, es una preocupación para los agricultores en todo el mundo debido a su alto riesgo de epidemia. Con el fin de controlar la enfermedad se implementa un manejo integral, el cual incluye el uso de fungicidas. Desafortunadamente, han sido reportadas numerosas poblaciones resistentes a los fungicidas. Además de esto, varios estudios han demostrado que algunos aislamientos de P. infestans son capaces de adquirir resistencia al fungicida, mefenoxam, in vitro, después de una única exposición a concentraciones sub-letales del fungicida. El propósito de este estudio fue evaluar si existe un efecto en la producción de esporangios en aislamientos de P. infestans que adquieren resistencia a mefenoxam in vitro. De esta manera, un aislamiento originalmente susceptible de P. infestans fue expuesto a diferentes concentraciones de agar arveja suplementado con mefenoxam y comparado a un control resistente. La producción de esporangios fue significantemente reducida en el aislamiento que era originalmente sensible y adquirió resistencia, mientras que el aislamiento control que era originalmente resistente produjo significativamente más esporangios en presencia de mefenoxam. Posibles implicaciones de la adquisición de resistencia en la producción de esporangios se discuten. Los resultados obtenidos profundizan en las implicaciones fisiológicas del fenómeno de resistencia adquirida en mefenoxam.MicrobiólogoPregrado18 hojasapplication/pdfengUniversidad de los AndesMicrobiologíaFacultad de CienciasDepartamento de Ciencias Biológicasinstname:Universidad de los Andesreponame:Repositorio Institucional SénecaIn vitro assessment of the effect of mefenoxam-acquired resistance on sporulation in isolates of phytophthora infestansTrabajo de grado - Pregradoinfo:eu-repo/semantics/bachelorThesishttp://purl.org/coar/resource_type/c_7a1fhttp://purl.org/coar/version/c_970fb48d4fbd8a85Texthttp://purl.org/redcol/resource_type/TPPhytophthora infestansFungicidas sistémicosPapas (Tubérculos)TomatesPlantasMicrobiologíaPublicationc1d0400e-c8b1-47fa-a90b-0c76096cd8e3virtual::5915-1c1d0400e-c8b1-47fa-a90b-0c76096cd8e3virtual::5915-1https://scienti.minciencias.gov.co/cvlac/visualizador/generarCurriculoCv.do?cod_rh=0001370823virtual::5915-1ORIGINALu807290.pdfapplication/pdf1988682https://repositorio.uniandes.edu.co/bitstreams/a316526c-f755-444e-ad4a-8cc3571ef586/downloadda17b34c44ec943748f68f1c692518b4MD51TEXTu807290.pdf.txtu807290.pdf.txtExtracted texttext/plain29331https://repositorio.uniandes.edu.co/bitstreams/c4b37bb5-6531-4c38-aa2c-232ccf1a0f10/download19088a08d80816cdbe110a3e22874555MD54THUMBNAILu807290.pdf.jpgu807290.pdf.jpgIM Thumbnailimage/jpeg10052https://repositorio.uniandes.edu.co/bitstreams/3f996c7c-4658-4de3-8beb-ad8463038132/download05f87cd0909adae6a4599295c48cb7efMD551992/39852oai:repositorio.uniandes.edu.co:1992/398522024-03-13 13:03:25.58http://creativecommons.org/licenses/by-nc-sa/4.0/open.accesshttps://repositorio.uniandes.edu.coRepositorio institucional Sénecaadminrepositorio@uniandes.edu.co |