Oxycom under field and laboratory conditions increases resistance responses in plants
2001
Several different types of chemicals induce resistance in plants. Oxycom that contains active oxygen species has under commercial field conditions improved the performance of a diversity of plant species exposed to a range of naturally-occurring pathogens, including Pythium, downy mildew and powdery mildew. Oxycom had only weak antifungal activity when assayed in the laboratory at the concentrations showing efficacy in the field. Northern hybridization using probes of genes involved in defense was performed on bean, Phaseolus vulgaris, after sprays of Oxycom or water. The transcript abundance of genes encoding proteins concerned with phenolic metabolism and plant cell wall strengthening was increased by treatment with Oxycom compared with water treatment. Similar patterns of gene induction were observed when benzothiadiazone (BTH), a chemical known to trigger systemic resistance in plants, was used. These laboratory findings are consistent with the products in Oxycom being able to increase the resistance potential of the plant.
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