Fusarium head blight (FHB) caused by the filamentous fungus @entity12069 is one of the most severe diseases threatening the production of small grains. Infected grains are often contaminated with mycotoxins such as @entity12071 and trichothecences. During survey of contamination by FHB in @entity579 grains, we found a bacterial isolate, designated as BN1, antagonistic to @entity12069 . The strain BN1 had branching vegetative hyphae and spores, and its aerial hyphae often had long, straight filaments bearing spores. The 16S rRNA gene of BN1 had 100% sequence identity with those found in several Streptomyces species. Phylogenetic analysis of ITS regions showed that BN1 grouped with S. sampsonii with 77% bootstrap value, suggesting that BN1 was not a known Streptomyces species. In addition, the efficacy of the BN1 strain against @entity12069 strains was tested both in vitro and in vivo. @entity3505 seedling length was significantly decreased by @entity12069 infection. However, this effect was mitigated when @entity3505 seeds were treated with BN1 spore suspension prior to @entity12069 infection. BN1 also significantly decreased FHB severity when it was sprayed onto @entity3505 heads, whereas BN1 was not effective when @entity3505 heads were point inoculated. These results suggest that spraying of BN1 spores onto @entity3505 heads during the @entity3505 flowering season can be efficient for plant protection. Mechanistic studies on the antagonistic effect of BN1 against @entity12069 remain to be analyzed.

Biological Efficacy of Streptomyces sp. Strain BN1 against the Cereal Head Blight Pathogen XXXX .

@entity3505 :: ('4565', 'Species') :: ['Wheat', 'wheat'] @entity12069 :: ('5518', 'Species') :: ['Fusarium graminearum', 'F. graminearum'] @entity579 :: ('4530', 'Species') :: ['rice'] @entity12071 :: ('MESH:D015025', 'Chemical') :: ['zearalenone']
@entity12069 :: (5518,Species) :: ['Fusarium graminearum']
