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Las proteínas que contienen el dominio putativo SET desempeñan un papel importante en la regulación de la
Bingting Lai1, Hengyuan Guo1, Kaidi Zhang1
1Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests, Ministry of Education, Danzhou Invasive Species Observation and Research Station of Hainan Province, School of Tropical Agriculture and Forestry, Hainan University, Haikou 570228, China.
Microbiological research
|August 22, 2025
Resumen
Las proteínas del dominio SET de Phytophthora capsici (PcSET) son cruciales para el crecimiento y la patogenicidad de los oomycetes. La eliminación de los genes PcSET-A, PcSET-B o PcSET-C redujo significativamente la esporulación y la virulencia, destacándolos como objetivos para controlar las enfermedades de las plantas.
Área de la Ciencia:
- Patología vegetal
- Micología molecular
- Oomycete Genética
Sus antecedentes:
- Phytophthora capsici causa enfermedades destructivas en varios cultivos, lo que lleva a importantes pérdidas de rendimiento en todo el mundo.
- Los factores moleculares, incluidas las proteínas efectoras y los moduladores epigenéticos, son clave para la patogenicidad de P. capsici.
- Las proteínas que contienen el dominio SET están implicadas en la regulación de la expresión génica y el desarrollo en oomicetos.
Objetivo del estudio:
- Identificar y caracterizar las proteínas que contienen el dominio SET en P. capsici.
- Investigar el papel de las proteínas específicas del dominio SET en el crecimiento, la esporulación y la patogenicidad de P. capsici.
- Evaluar el potencial de los PcSET como objetivos para el control de enfermedades de las plantas.
Principales métodos:
- Análisis bioinformático para identificar las proteínas del dominio SET en el genoma de P. capsici.
- Análisis transcriptómico para identificar genes efectores candidatos durante la infección del huésped.
- CRISPR-Cas9 y recombinación homóloga para la deleción genética dirigida.
- Análisis fenotípico de los mutantes de la deleción génica, incluidos los ensayos de crecimiento, esporulación y patogenicidad.
Principales resultados:
- Se identificaron 56 proteínas que contienen el dominio SET en P. capsici, de las cuales 35 se predijeron como efectores.
- 13 genes efectores candidatos fueron regulados al alza durante la infección.
- La eliminación de PcSET-A y PcSET-B alteró el crecimiento vegetativo, mientras que ΔPcset-C no lo hizo.
- La alteración de PcSET-A, PcSET-B y PcSET-C redujo la esporulación y eliminó la patogenicidad.
- La liberación de zoospora no se vio afectada por la eliminación de estos tres genes.
Conclusiones:
- Las proteínas que contienen el dominio SET juegan un papel crítico en el desarrollo morfológico y patológico de P. capsici.
- PcSET-A, PcSET-B y PcSET-C son esenciales para la virulencia y la esporulación asexual de P. capsici.
- Estas proteínas PcSET representan objetivos prometedores para el desarrollo de nuevas estrategias para controlar las enfermedades de las plantas inducidas por P. capsici.
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