4.7 Article

Tomato Response to Fusarium spp. Infection under Field Conditions: Study of Potential Genes Involved

Journal

HORTICULTURAE
Volume 8, Issue 5, Pages -

Publisher

MDPI
DOI: 10.3390/horticulturae8050433

Keywords

Solanum lycopersicon; Fusarium diseases; fungal infection; disease resistance; gene expression

Categories

Funding

  1. National Funds through FCT-Foundation for Science and Technology [UIDB/05183/2020]

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This study assessed the level of Fusarium spp. infection in field tomato samples and evaluated the differential expression of target genes involved in plant-pathogen interactions. The results showed that the level of infection positively influenced the expression of defense-related genes in tomato, providing new insights for sustainable plant disease management.
Tomato is one of the most important horticultural crops in the world and is severely affected by Fusarium diseases. To successfully manage these diseases, new insights on the expression of plant-pathogen interaction genes involved in immunity responses to Fusarium spp. infection are required. The aim of this study was to assess the level of infection of Fusarium spp. in field tomato samples and to evaluate the differential expression of target genes involved in plant-pathogen interactions in groups presenting different infection levels. Our study was able to detect Fusarium spp. in 16 from a total of 20 samples, proving the effectiveness of the primer set designed in the ITS region for its detection, and allowed the identification of two main different species complexes: Fusarium oxysporum and Fusarium incarnatum-equiseti. Results demonstrated that the level of infection positively influenced the expression of the transcription factor WRKY41 and the CBEF (calcium-binding EF hand family protein) genes, involved in plant innate resistance to pathogens. To the best of our knowledge, this is the first time that the expression of tomato defense-related gene expression is studied in response to Fusarium infection under natural field conditions. We highlight the importance of these studies for the identification of candidate genes to incorporate new sources of resistance in tomato and achieve sustainable plant disease management.

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