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<p>Halobacin (<b>1</b>), a new glycosylated acyloin derivative, was isolated from the fermentation broth of a coral-associated bacterium <i>Halobacillus</i> sp. DUNA-S15. The structure of <b>1</b> was determined based on NMR and MS analyses and the absolute configuration of the sugar moiety was determined by diastereomeric HPLC separation using chiral derivatization. Compound <b>1</b> was inactive in antimicrobial and cytotoxicity assays but suppressed the root growth of germinated seeds of lettuce and barnyard millet to <i>ca</i> 30% at 1 µg ml<sup>−1</sup> and <i>ca</i> 70% at 10 µg ml<sup>−1</sup> compared to the nontreated seeds.</p>

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Halobacin, a herbicidal acyloin derivative from a marine bacterium of the genus Halobacillus

  • 期刊论文

  • 发表日期：

    2025年7月10日

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  • Md. Mehebub Al Raji,
  • Desy Wulan Triningsih,
  • Agus Trianto,
  • Yasuhiro Igarashi

摘要

Halobacin (1), a new glycosylated acyloin derivative, was isolated from the fermentation broth of a coral-associated bacterium Halobacillus sp. DUNA-S15. The structure of 1 was determined based on NMR and MS analyses and the absolute configuration of the sugar moiety was determined by diastereomeric HPLC separation using chiral derivatization. Compound 1 was inactive in antimicrobial and cytotoxicity assays but suppressed the root growth of germinated seeds of lettuce and barnyard millet to ca 30% at 1 µg ml−1 and ca 70% at 10 µg ml−1 compared to the nontreated seeds.