Extracellular DNA of Fusarium oxysporum f. sp. cubense as a Priming Agent for Inducing the Resistance of Banana Plantlets

Fusarium wilt is one of the major causes global losses in banana industry. The application extracellular DNA (eDNA) explored as a natural fungicide. eDNA categorized on basis receiving cell’s perception, namely self and non-self. self-eDNA agriculture presents potential for limiting growth pathogens, while non-self-eDNA, vaccine plants. This study evaluated whether from oxysporum f. sp. cubense (Foc) could limit Foc itself (self-inhibition test) increasing resistance plant (priming test). A self-inhibition test showed that administration 400 800 μg mL−1 inhibited TR4 spore germination. priming was carried out plantlets interaction medium containing suspension with final concentrations 40, 80, 200 mL−1. After 24 h, were infected 106 Increased observed treated eDNA, indicated by decrease leaf symptoms rhizome discoloration. accumulation O2- H2O2 h after significant increase relative expression CAT, PR1, chitinase 1 genes day 9 post-infection. In conclusion, inhibitor pathogen agent to be considered biofungicide candidate induce