The gut microbial ecosystem is governed by complex microbe-microbe interactions, with most documented as interspecies relationships. In this issue of Cell Host & Microbe, Özçam et al. identified intraspecies competition among related strains of the gut symbiont Limosilactobacillus reuteri that are mediated via the antimicrobial activity of polyketide synthase (PKS).

中文翻译：

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死亡之吻：罗伊氏乳杆菌 PKS 推动种内竞争

肠道微生物生态系统由复杂的微生物-微生物相互作用控制，其中大多数记录为种间关系。在本期Cell Host & Microbe中，Özçam 等人。确定了通过聚酮化合物合酶（PKS）的抗菌活性介导的肠道共生体罗伊氏乳杆菌相关菌株之间的种内竞争。