Dataset Information

Complete Genome Sequence of Bacillus amyloliquefaciens subsp. plantarum CC178, a Phyllosphere Bacterium Antagonistic to Plant Pathogenic Fungi.

ABSTRACT: Bacillus amyloliquefaciens subsp. plantarum strain CC178 is a phyllosphere bacterium with antagonistic activity against a wide range of plant fungal pathogens. The genome of strain CC178 is 3,916,828 bp in size and harbors 3,972 genes. Six giant gene clusters are dedicated to the nonribosomal synthesis of antimicrobial polypeptides and polyketides.

SUBMITTER: Kim BY

PROVIDER: S-EPMC4290986 | biostudies-literature | 2015 Jan

REPOSITORIES: biostudies-literature

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Publications

Complete Genome Sequence of Bacillus amyloliquefaciens subsp. plantarum CC178, a Phyllosphere Bacterium Antagonistic to Plant Pathogenic Fungi.

Kim Byung-Yong BY Lee Sang-Yeob SY Ahn Jae-Hyung JH Song Jaekyeong J Kim Wan-Gyu WG Weon Hang-Yeon HY

Genome announcements 20150108 1

Bacillus amyloliquefaciens subsp. plantarum strain CC178 is a phyllosphere bacterium with antagonistic activity against a wide range of plant fungal pathogens. The genome of strain CC178 is 3,916,828 bp in size and harbors 3,972 genes. Six giant gene clusters are dedicated to the nonribosomal synthesis of antimicrobial polypeptides and polyketides. ...[more]

PMID: 25573933

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Project description:Fusarium graminearum (teleomorph: Ascomycota, Hypocreales, Gibberella, Gibberella zeae) is a destructive fungal pathogen that threatens the production and quality of wheat and barley worldwide. Controlling this toxin-producing pathogen is a significant challenge. In the present study, the commercially available strain Bacillus amyloliquefaciens (Bacteria, Firmicutes, Bacillales, Bacillus) FZB42 showed strong activity against F. graminearum The lipopeptide bacillomycin D, produced by FZB42, was shown to contribute to the antifungal activity. Purified bacillomycin D showed strong activity against F. graminearum, and its 50% effective concentration was determined to be approximately 30 μg/ml. Analyses using scanning and transmission electron microscopy revealed that bacillomycin D caused morphological changes in the plasma membranes and cell walls of F. graminearum hyphae and conidia. Fluorescence microscopy combined with different dyes showed that bacillomycin D induced the accumulation of reactive oxygen species and caused cell death in F. graminearum hyphae and conidia. F. graminearum secondary metabolism also responded to bacillomycin D challenge, by increasing the production of deoxynivalenol. Biological control experiments demonstrated that bacillomycin D exerted good control of F. graminearum on corn silks, wheat seedlings, and wheat heads. In response to bacillomycin D, F. graminearum genes involved in scavenging reactive oxygen species were downregulated, whereas genes involved in the synthesis of deoxynivalenol were upregulated. Phosphorylation of MGV1 and HOG1, the mitogen-activated protein kinases of F. graminearum, was increased in response to bacillomycin D. Taken together, these findings reveal the mechanism of the antifungal action of bacillomycin D.IMPORTANCE Biological control of plant disease caused by Fusarium graminearum is desirable. Bacillus amyloliquefaciens FZB42 is a representative of the biocontrol bacterial strains. In this work, the lipopeptide bacillomycin D, produced by FZB42, showed strong fungicidal activity against F. graminearum Bacillomycin D caused morphological changes in the plasma membrane and cell wall of F. graminearum, induced accumulation of reactive oxygen species, and ultimately caused cell death in F. graminearum Interestingly, when F. graminearum was challenged with bacillomycin D, the deoxynivalenol production, gene expression, mitogen-activated protein kinase phosphorylation, and pathogenicity of F. graminearum were significantly altered. These findings clarified the mechanisms of the activity of bacillomycin D against F. graminearum and highlighted the potential of B. amyloliquefaciens FZB42 as a biocontrol agent against F. graminearum.

Dataset Information

Complete Genome Sequence of Bacillus amyloliquefaciens subsp. plantarum CC178, a Phyllosphere Bacterium Antagonistic to Plant Pathogenic Fungi.

Publications

Complete Genome Sequence of Bacillus amyloliquefaciens subsp. plantarum CC178, a Phyllosphere Bacterium Antagonistic to Plant Pathogenic Fungi.

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