Abstract
Deoxynivalenol (DON) poses significant challenges due to its frequent contamination of grains and associated products. Microbial strategies for mitigating DON toxicity showed application potential. Eight bacterial isolates with DON degradation activity over 5% were obtained from various samples of organic fertilizer in this study. One of the isolates emerged as a standout, demonstrating a substantial degradation capability, achieving a 99.21% reduction in DON levels. This isolate, underwent thorough morphological, biochemical, and molecular characterization to confirm its identity, and was identified as a new strain of Achromobacter spanius P-9. Subsequent evaluations revealed that the strain P-9 retains its degradation activity after a 24-h incubation, reaching optimal performance at 35 °C with a pH of 8.0. Further studies indicated that Ca2+ ions enhance the degradation process, whereas Zn2+ ions exert an inhibitory effect. This is the pioneering report of DON degradation by Achromobacter spanius, illuminating its prospective utility in addressing DON contamination challenges.
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Conceptualization, C.C.; methodology, F.Y. and Y.D.; software, G.C.; validation, S.T.; formal analysis, F.Y.; investigation, F.Y. and Y.D.; data curation, S.T.; writing—original draft preparation, F.Y. and Y.D.; writing—review and editing, C.C. T.Z. and S.S.; visualization, Z.Z.; project administration, C.C and S.S. All authors have read and agreed to the published version of the manuscript.
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Yao, F., Du, Y., Tian, S. et al. Identification and characterization of Achromobacter spanius P-9 and elucidation of its deoxynivalenol-degrading potential. Arch Microbiol 206, 178 (2024). https://doi.org/10.1007/s00203-024-03864-1
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DOI: https://doi.org/10.1007/s00203-024-03864-1