Composition and functional comparison of vetiver root endophytic microbiota originating from different geographic locations that show antagonistic activity towards Fusarium graminearum

Given the current trend towards reducing use of chemical controls in agriculture, microbial resources such as plant endophytes are being intensively investigated for traits that conducive to protection. Among various important target pathogens, Fusarium graminearum is a fungal pathogen cereal crops responsible severe yield losses and mycotoxin contamination grains. In present study, we bacterial endophytic communities from vetiver (Chrysopogon zizanioides (L.) Roberty) roots originating 5 different geographic locations across Europe Africa. This study relies on global 16S metabarcoding approach isolation/functional characterization isolates. The results obtained showed geographical location factor influences composition relative abundance root endophyte vetiver. Three hundred eighty-one were isolated assessed their vitro antagonistic activities F. mycelium growth. total, 46 % isolates at least 50 inhibitory activity against graminearum. taxonomic identification bioactive revealed these functional culturable was influenced by origins roots. selected consisted 15 genera. Some Bacillus, Janthinobacterium, Kosakonia, Microbacterium, Pseudomonas, Serratia strong growth inhibition (≥70 %) could be candidates further development biocontrol agents.