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Prevalencia, diversidad y parasitismo de los prófagos de cola en Vibrio harveyi
Ruijie Ma1,2, Huiying Zhong2, Rui Zhang2
1College of Civil and Transportation Engineering, Shenzhen University, Shenzhen, China.
mSphere
|August 25, 2025
Resumen
Este estudio identificó 13 prófagos de cola en los genomas de Vibrio harveyi, revelando diversas estrategias parasitarias y roles potenciales en la virulencia. Estos hallazgos mejoran la comprensión de las interacciones entre prófagos y bacterias y su impacto en la evolución de patógenos acuáticos.
Área de la Ciencia:
- Microbiología
- La genómica
- Biología evolutiva
Sus antecedentes:
- Vibrio harveyi causa bacteriosis luminosa en los organismos acuáticos, lo que lleva a pérdidas económicas significativas en la acuicultura.
- Los prófagos dentro de V. harveyi influyen en su patogénesis y evolución, lo que hace que su estudio sea crucial para comprender y controlar las infecciones.
Objetivo del estudio:
- Investigar la diversidad, la prevalencia, la evolución y las funciones ecológicas de los prófagos en V. harveyi.
- Identificar posibles factores de virulencia codificados por estos prófagos y comprender sus mecanismos de transmisión.
Principales métodos:
- Análisis genómico de 55 genomas de V. harveyi de fuentes globales para identificar y anotar los prófagos.
- Análisis filogenético basado en proteomas y análisis de redes para clasificar los prófagos y estudiar su distribución.
- La coincidencia del espaciador CRISPR para determinar la historia lítica de los prófagos.
Principales resultados:
- Se identificaron trece prófagos con cola, que exhiben diversos mecanismos parasitarios (transposición, recombinación y no integración).
- Los prófagos se clasificaron en subfamilias y géneros nuevos, con patrones de distribución distintos en las especies de Vibrio.
- Se identificaron homólogos de los factores de virulencia (motilidad, biofilm) y se detectó la historia lítica de más de la mitad de los profágicos.
Conclusiones:
- Se estableció una base de datos genómica completa de los prófagos de V. harveyi, destacando su diversidad y estrategias parasitarias.
- Los prófagos pueden mejorar la patogenicidad de V. harveyi y la aptitud adaptativa al transportar factores de virulencia.
- Los prófagos juegan un papel en la transferencia horizontal de rasgos de virulencia dentro de las poblaciones de V. harveyi.
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