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La bacteria simbiótica modifica el color del cuerpo del áfido
Tsutomu Tsuchida1, Ryuichi Koga, Mitsuyo Horikawa
1Molecular Entomology Laboratory, RIKEN Advanced Science Institute, Wako 351-0198, Japan. t-tsuchida@riken.jp
Science (New York, N.Y.)
|November 25, 2010
Resumen
El color del pulgón de guisante cambia de rojo a verde cuando está infectado por la bacteria Rickettsiella. Este cambio de color, impulsado por cambios de pigmento, puede alterar la forma en que los depredadores y parásitos interactúan con estos insectos.
Área de la Ciencia:
- Ecología Ecología Ecología.
- Microbiología Microbiología.
- Biología de los insectos Biología de los insectos
Sus antecedentes:
- La variación de color en las poblaciones de pulgón de guisante afecta a sus interacciones con los depredadores y parásitos.
- Los endosimbiontes facultativos son microorganismos que viven en los insectos pero que no son esenciales para su supervivencia.
Objetivo del estudio:
- Para investigar el impacto de la infección por Rickettsiella endosymbiont en el color del cuerpo de los áfidos de guisante.
- Comprender las bases bioquímicas del cambio de color en los áfidos de guisantes infectados.
Principales métodos:
- Colección de campo de áfidos del guisante en Europa Occidental.
- Análisis espectrofotométrico del color corporal de los áfidos.
- Análisis de pigmentos para cuantificar las quinonas y los carotenoides.
Principales resultados:
- Aproximadamente el 8% de los áfidos de guisantes recolectados albergaban infecciones por Rickettsiella.
- La infección por Rickettsiella causó un cambio en el color del cuerpo del pulgón de guisante de rojo a verde.
- Los áfidos infectados mostraron niveles aumentados de quinonas policíclicas azul-verde y cambios mínimos en los carotenoides.
Conclusiones:
- Los endosimbiontes de Rickettsiella pueden inducir cambios de color significativos en los áfidos del guisante.
- La alteración de color observada está relacionada con cambios en la composición del pigmento.
- Se supone que este cambio de color inducido por el endosimbionte influye en las interacciones ecológicas, incluida la dinámica presa-depredador y otras relaciones simbióticas.
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