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Complete Genome Sequence of Sphingobacterium psychroaquaticum Strain SJ-25, an Aerobic Bacterium Capable of Suppressing Fungal Pathogens

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Abstract

Using antagonistic bacterium is an effective method to control plant disease by fungal pathogens. An aerobic bacterium designated SJ-25, capable of suppressing Fusarium graminearum, Exserohilum turcicum, Pythium aphanidermatum, and Cochliobolus sativus, was isolated from farmland soil. The phylogenetic analysis revealed that strain SJ-25 belongs to the species of Sphingobacterium psychroaquaticum. The genome of strain SJ-25 consists of a 4,396,535-bp chromosome with a G+C content of 41.7 mol%; including 3696 CDS, 64 tRNA genes and six rRNA operons. Genomic analysis revealed that its genome contains multiple genes responsible for biosynthesis of siderophore, methyl 4-hydroxybenzoate, chitinase, giving strain SJ-25 the antagonistic ability on fungi pathogen. Strain SJ-25 harbors sets genes responsible for production of 2, 3-butanediol and salicylic acid, which could elicit the induced systemic resistance of the host plant. This genome sequence could be used as a basis material for further exploration of antagonistic mechanisms on fungi, widening our understanding of the ecological role of the genus Sphingobacterium in farmland ecosystem.

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Acknowledgements

The reported study was supported by High-Level Talent Start-Up Research Project of Inner Mongolia University (Nos. 21800–5185133).

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Authors and Affiliations

  1. Inner Mongolia Key Lab of Environmental Pollution Control and Waste Resource Reuse & Ministry of Education Key Lab of Ecology and Resource Use of the Mongolian Plateau, School of Ecology and Environment, Inner Mongolia University, Hohhot, 010021, People’s Republic of China

    Lian Xu, Hui Zhang, Ya-Ting Xing, Ning Li, Shuai Wang & Ji-Quan Sun

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  1. Lian Xu
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  2. Hui Zhang
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  3. Ya-Ting Xing
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Correspondence to Ji-Quan Sun.

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Xu, L., Zhang, H., Xing, YT. et al. Complete Genome Sequence of Sphingobacterium psychroaquaticum Strain SJ-25, an Aerobic Bacterium Capable of Suppressing Fungal Pathogens. Curr Microbiol 77, 115–122 (2020). https://doi.org/10.1007/s00284-019-01789-3

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  • DOI: https://doi.org/10.1007/s00284-019-01789-3

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