Abstract
Seeds of a number of flowering plant species quickly mucilage after moistening, which indicates certain adaptive advantages of this trait in conditions of natural selection. Seed mucus can enter into various reactions with soil, including pathogenic mycoflora. The aim of the investigation was to establish the response of fungicidal activity of seed mucus in relation to soil fungal pathogens. The seeds of common flax Linum usitatissimum and pathogenic soil fungus Fusarium oxysporum were the objects of study. Observations showed that the mucus, which already formed 2–3 h after moistening flax seeds in Petri dishes with F. oxysporum mycelium, begins to inhibit fungal hyphae. After 1 day, sterile zones with a diameter of 9.4 ± 0.34 mm are formed around the mucous seeds. The extract of flax mucus also has fungicidal properties. The average diameter of the sterile zones after spot application of 0.05 mL flaxseed mucus to the mycelium of the F. oxysporum was 9.65 ± 0.22 mm. Studies have revealed the phenomenon of an earlier undescribed fungicidal activity of polysaccharide flaxseed mucus in relation to the F. oxysporum. The nonspecific fungicidal activity of seed mucus can be used in the breeding of common flax varieties as a new trait of natural protection of germinating seeds.
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Lukomets, V.M., Zelentsov, S.V., Saenko, G.M. et al. Fungicidal Activity of Musilage Development Polysaccharides of Common Flax Linum usitatissimum L.. Russ. Agricult. Sci. 46, 231–234 (2020). https://doi.org/10.3103/S1068367420030118
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DOI: https://doi.org/10.3103/S1068367420030118