INDUCTION OF SOYBEAN RESISTANCE MECHANISMS TO ANTHRACNOSE BY BIOCONTROL AGENTS

ABSTRACT The biological control, thinking about the integrated management, has been inserted with other management techniques to disease such as soybean anthracnose. aims of this work were verify action Trichoderma and Bacillus isolates in induction resistance mechanisms anthracnose a function seed treatment. statistical design was entirely randomised, 5 x 2 (agent species sampling times) factorial scheme five replicates. Soybean seeds treated amyloliquefaciens BV03, B. subtilis BV02, asperellum BV10, Carbendazim + Thiram distilled water (control). Seven days after seedling emergence, μL 1 10−4 Colletotrichum truncatum spores inoculated on cotyledons. Catalase (CAT), peroxidase (POX), phenylalanine ammonia lyase (PAL) glyceollin (GLY) activities before pathogen inoculation, well diameter lesion cotyledons, evaluated. Data submitted analysis variance and, when significant, mean values compared by Fisher’s test (p < 0.05). treatments did not influence first time inoculation. BV10 increased POX PAL up 173%, while BV03 activity. Glyceollin influenced treatments. T. reduces 61%. Thus, potential control anthracnose, improved response defense against C. truncatum, performed