title: Endophytic bacteria from wheat grain as biocontrol agents of Fusarium graminearum and deoxynivalenol production in wheat.
abstract: In Uruguay, Fusarium graminearum is the most common species that infects wheat and is responsible for Fusarium head blight (FHB) and contamination of grain with deoxynivalenol (DON). The aim of this work was to select bacterial endophytes isolated from wheat grain to evaluate their antagonistic ability against F. graminearum and DON production in vitro and under field conditions. Four strains identified as Bacillus megaterium (BM1) and Bacillus subtilis (BS43, BSM0 y BSM2) significantly reduced fungal growth and spore germination of F. graminearum. This antagonist activity remained unchanged after the bacterial cultures were heat treated. Under field conditions, treatments with antagonist BM1 was the most effective, reducing the FHB incidence and severity by 93 and 54 %, respectively, and the production of DON by 89.3 %.
authors.affiliation: Laboratorio de Micología, Facultad de Ciencias - Facultad de Ingeniería, UdelaR, Julio Herrera y Reissig 565, 11200, Montevideo, Uruguay, dpan@fing.edu.uy.
authors.forename: D
authors.initials: D
authors.lastname: Pan
authors.forename: A
authors.initials: A
authors.lastname: Mionetto
authors.forename: S
authors.initials: S
authors.lastname: Tiscornia
authors.forename: L
authors.initials: L
authors.lastname: Bettucci
mesh_terms: D001410:Bacillus megaterium / Q000378:metabolism*; D001412:Bacillus subtilis / Q000378:metabolism*; D005670:Fusarium / Q000254:growth & development* / Q000302:isolation & purification / Q000378:metabolism; D025282:Mycelium / Q000254:growth & development; D010935:Plant Diseases / Q000382:microbiology / Q000517:prevention & control; D013172:Spores, Fungal / Q000254:growth & development; D014255:Trichothecenes / Q000378:metabolism*; D014908:Triticum / Q000382:microbiology*; D014583:Uruguay; D000067348:Whole Grains / Q000382:microbiology
chemical_list: D014255:Trichothecenes; C007262:deoxynivalenol