Year: 2025
Type: conference-paper
Abstract: Constantly changing climate conditions not only have a direct adverse impact on crop productivity, but also affect fungal microbiome. Studies report that global heating and alteration in precipitation patterns induce modifications in metabolism of both pathogenic and non-pathogenic fungi associated with economic important plants. These changes include areal spread, increased pathogenity, mycotoxigenity, hostrange widening and imply developing new preparation for suppressing pathogenic fungi. Moreover, since currently synthetic fungicides are the most effective remedy against fungal pathogens, including Fusarium, it is important to reduce their negative impact on environment and biodiversity. The aim of this study was evaluating the effect of tomato treatment with seventeen triazole derivatives in combination with fungal chitosan on Fusarium propagation in plants during early stages of vegetation. Several novel triazole derivatives were obtained in the Laboratory of Organic Synthesis, Institute of Chemistry of Moldova State University. Three trial groups of tomato seeds were primed with chitosan, triazole derivatives in different concentrations, triazole-chitosan compound and grown in infected soil in nursery. Control groups – tomato seeds treated with distilled water and Topaz (Syngenta ©). Fusarium propagation was assessed using PCR assay based on fungal DNA in plant tissue accumulated during the trial time. It was observed that tomato plants treated with triazole derivatives had a more developed root system and stems compared to water-treated plants. In most cases, the length of roots exceeded the respective values for stems. Therefore, it could be stated that the compounds testes reveal selective stimulatory effect on tomato vegetative organs, while treated plants did not show any symptoms of fusariosis. One of the triazole derivatives in combination with fungal chitosan had a more significant inhibitory effect on Fusarium spp. propagation in tomato plants compared to the same substance in higher concentrations and chitosan itself. Conclusions. Several novel triazole derivatives manifest synergy with chitosan in both stimulating tomato growth and suppressing Fusarium spp. This interaction permits reducing significantly the triazole content for plant treatment without losing its benefic stimulatory and antifungal properties while reducing environment contamination with synthetic pesticides and growth promoters
Institutions: Moldova State University, Institute of Chemistry
Language: English
Subfield: Plant Science
Domain: Life Sciences
SDG: Zero hunger
Open Access status: bronze
OpenAlex ID: W7204692702