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Partículas parecidas a virus y un ácaro de araña íntimamente asociados con una nueva enfermedad de la cebada
Resumen
Una nueva enfermedad parecida a un virus amenaza la cebada de malte en Montana y Canadá. El ácaro araña, Petrobia latens, transmite inesperadamente las partículas filamentosas únicas que causan esta nueva enfermedad de la cebada.
Área de la Ciencia:
- Patología Vegetal Patología vegetal.
- Virología Virología.
- Entomología Entomología.
Sus antecedentes:
- La producción de cebada de malta en Montana y Canadá se enfrenta a la amenaza de una nueva enfermedad.
- La enfermedad se caracteriza por partículas únicas, envueltas, filamentosas, parecidas a virus (VLPs).
Objetivo del estudio:
- Para identificar el agente causal de la nueva enfermedad de la cebada.
- Para determinar el modo de transmisión de este nuevo patógeno vegetal.
Principales métodos:
- Sección ultrafina de tejido de cebada enfermo para microscopía electrónica.
- Ensayos de transmisión utilizando el ácaro araña, Petrobia latens, para inocular plantas de cebada sanas.
Principales resultados:
- Se observaron VLP filamentosos envueltos que miden 64 nm por 1264000 nm en tejidos enfermos.
- El ácaro araña, Petrobia latens, fue identificado como un vector, transmitiendo el agente causal de la cebada infectada a la sana.
- Los ácaros no infecciosos no transmitían la enfermedad a menos que estuvieran expuestos a plantas infectadas.
Conclusiones:
- Un nuevo agente de enfermedades parecido a un virus está afectando a la cebada de malta.
- El ácaro araña, Petrobia latens, actúa como un vector inesperado para este patógeno de la planta, un papel no reportado previamente para esta especie de ácaro.
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