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Infection

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When a pathogen enters the body and reproduces, it can cause an infection, damage body cells, and cause illness symptoms that eventually lead to disease. Therefore, its prevention requires breaking the chain of infection.
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American Trypanosomiasis

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The Insect Galleria mellonella as a Powerful Infection Model to Investigate Bacterial Pathogenesis

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Published on: December 11, 2012

El áfido está protegido del patógeno por el endosimbionte.

Claire L Scarborough¹, Julia Ferrari, H C J Godfray

¹Natural Environment Research Council Centre for Population Biology, Division of Biology, Imperial College London, Silwood Park Campus, Ascot, Berks, SL5 7PY, UK.

Science (New York, N.Y.)

|December 17, 2005

Resumen

Este resumen es generado por máquina.

El endosimbionte bacteriano Regiella insecticola aumenta significativamente la resistencia del pulgón de guisante a los patógenos fúngicos. Esta simbiosis mejora la supervivencia de los áfidos y reduce la transmisión de enfermedades, lo que beneficia a la población de áfidos.

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Área de la Ciencia:

Ecología microbiana Ecología microbiana.
Patología de los insectos Patología de los insectos.
Relaciones simbióticas Las relaciones simbióticas.

Sus antecedentes:

Los endosimbiontes bacterianos facultativos son comunes en los áfidos.
Estos simbiontes pueden influir en las interacciones de los áfidos con otros organismos.
El papel de endosimbiontes específicos en la defensa del huésped no se entiende completamente.

Objetivo del estudio:

Investigar el efecto de Regiella insecticola en la resistencia de los áfidos del guisante a un patógeno fúngico.
Para determinar si el establecimiento experimental de R. insecticola impacta la supervivencia y la aptitud del pulgón.

Principales métodos:

Inoculación experimental de clones aposimbióticos de pulgón de guisante con Regiella insecticola.
Desafiar a los áfidos inoculados y de control con un patógeno fúngico.
Evaluación de las tasas de supervivencia de pulgón y la esporulación de hongos en cadáveres de pulgón.

Principales resultados:

Los áfidos experimentalmente infectados con Regiella insecticola exhibieron mayores tasas de supervivencia después de la exposición a patógenos fúngicos.
La presencia de R. insecticola redujo la esporulación de hongos en cadáveres de áfidos.
Esta reducción en la esporulación redujo las tasas de transmisión de la enfermedad a los pulgones cercanos.

Conclusiones:

Regiella insecticola confiere una resistencia significativa a los patógenos fúngicos en los áfidos de los guisantes.
Este endosimbionte bacteriano mejora la supervivencia del huésped y la aptitud inclusiva.
Los mecanismos de defensa mediados por simbiontes son cruciales para la dinámica de la población de áfidos y la regulación de la enfermedad.