Resumen

VASQUEZ-GUTIERREZ, Ubilfrido et al. Evaluation of the pathogenicity of three isolates of Tomato brown rugose fruit virus in tomato plants (Solanum lycopersicum L.) from Coahuila, Mexico. Revista bio ciencias [online]. 2024, vol.11, e1576.  Epub 25-Mayo-2026. ISSN 2007-3380.  https://doi.org/10.15741/revbio.11.e1576.

Tomato brown rugose fruit virus (ToBRFV) poses an emerging threat and represents a significant economic risk in tomato production. This study aimed to evaluate three ToBRFV isolates obtained from greenhouses in Coahuila, Mexico, to assess their pathogenicity in tomato plants of the variety 172-300 and establish a diagrammatic scale for accurately visualizing the severity of the symptoms in leaflets and fruits. Three ToBRFV isolates (TB1, TB2, and FQ3) were obtained from greenhouse tomatoes and used for pathogenicity tests on the hybrid 172-300 under greenhouse conditions. The FQ3 isolate exhibited a greater impact on the agronomic variables of tomato plants compared to the other isolates, resulting in a 53.9% decrease in plant height and a 38.9% reduction in the dry weight of the aerial plant part. Regarding fruit quality variables, the presence of FQ3 led to a reduction of 43.1% in equatorial diameter and a 43.2% decrease in yield. Furthermore, FQ3 caused an incidence ranging from 33.9% to 50% and a severity ranging from 41% to 87.5% compared to the other isolates. These findings underscore the importance of understanding and managing the variability in the response of tomato plants to different ToBRFV isolates. In this context, the use of hybrids emerges as an effective option for mitigating the severity levels of the virus.

Palabras llave : Incidence; Mexico; Agronomic parameters; Severity; ToBRFV.

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