杆菌 (Streptomyces maremycinicus sp.) 是一种有毒的植物. nov. 和其二次代谢物-生物合成基因集群
Hisayuki Komaki1, Yasuhiro Igarashi2, Tomohiko Tamura3
1Biological Resource Center, National Institute of Technology and Evaluation (NBRC), Chiba, 292-0818, Japan. komaki-hisayuki@nite.go.jp.
The Journal of antibiotics
|July 9, 2025
概括
一种新型的土壤细菌Streptomyces maremycinicus可以产生像FR-900452这样的有价值的化合物. 这一发现扩大了已知的Streptomyces物种及其生物合成潜力.
科学领域:
- 微生物学 微生物学
- 细菌学 细菌学是一门学科.
- 基因组学就是基因组学.
背景情况:
- 已知Streptomyces菌株可以产生生物活性二次代谢产物.
- 菌株TP-A0890从土壤中分离出来,产生FR-900452和A-74863a.
研究的目的:
- 用多相方法对TP-A0890菌株的Streptomyces进行分类.
- 描述新物种和相关菌株的生物合成基因集群.
主要方法:
- 使用16S rRNA基因序列进行了家族遗传学分析.
- 化学分类学分析,包括酸糖的组成,menaquinones,和脂肪酸.
- 基因组测序和数字DNA-DNA杂交.
主要成果:
- 菌株TP-A0890在遗传学上与Streptomyces coriariae密切相关 (99.7%的相似性).
- 化学分类学数据与Streptomyces属一致.
- 数字DNA-DNA杂交和表型差异支持指定一个新物种,Streptomyces maremycinicus sp. 新型 (类型菌株TP-A0890).
- 菌株B9173,一种FR-900452和马里米辛的生产者,被确定属于S. maremycinicus.
- S. maremycinicus菌株拥有22-23个二次代谢物-生物合成基因集群 (smBGCs),其中一些与S. coriariae相比是独一无二的.
结论:
- 杆菌 (Streptomyces maremycinicus sp.) 是一种有毒的植物. 根据多相分类学数据,nov.被提出为一种新物种.
- 该研究确定S. maremycinicus是重要的二次代谢物的生产者.
- 对比基因组学揭示了S. maremycinicus中保存和独特的smBGCs,突出了其生物合成潜力.
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