RT info:eu-repo/semantics/article T1 Involvement of Trichoderma harzianum Epl-1 Protein in the Regulation of Botrytis Virulence- and Tomato Defense-Related Genes A1 Gomes, Eriston V. A1 Ulhoa, Cirano J. A1 Cardoza, Rosa E. A1 Silva, Roberto N. A1 Gutiérrez Martín, Santiago A2 Microbiologia K1 Biología K1 Bioquímica K1 Trichoderma harzianum K1 Epl-1 protein K1 Botrytis cinerea K1 Fungus–plant interaction K1 Mycoparasitism AB [EN] Several Trichoderma spp. are well known for their ability to: (i) act as important biocontrol agents against phytopathogenic fungi; (ii) function as biofertilizers; (iii) increase the tolerance of plants to biotic and abiotic stresses; and (iv) induce plant defense responses via the production and secretion of elicitor molecules. In this study, we analyzed the gene-regulation effects of Trichoderma harzianum Epl-1 protein during the interactions of mutant ∆epl-1 or wild-type T. harzianum strains with: (a) the phytopathogen Botrytis cinerea and (b) with tomato plants, on short (24 h hydroponic cultures) and long periods (4-weeks old plants) after Trichoderma inoculation. Our results indicate that T. harzianum Epl-1 protein affects the in vitro expression of B. cinerea virulence genes, especially those involved in the botrydial biosynthesis (BcBOT genes), during the mycoparasitism interaction. The tomato defense-related genes were also affected, indicating that Epl-1 is involved in the elicitation of the salicylic acid pathway. Moreover, Epl-1 also regulates the priming effect in host tomato plants and contributes to enhance the interaction with the host tomato plant during the early stage of root colonization PB Frontiers Media LK https://hdl.handle.net/10612/19105 UL https://hdl.handle.net/10612/19105 NO Gomes, E. V., Ulhoa, C. J., Cardoza, R. E., Silva, R. N., & Gutiérrez, S. (2017). Involvement of trichoderma harzianum Epl-1 protein in the regulation of botrytis virulence- and tomato defense-related genes. Frontiers in Plant Science, 8. https://doi.org/10.3389/FPLS.2017.00880 DS BULERIA. Repositorio Institucional de la Universidad de León RD 17-may-2024