PDF(Pubmed)
Abstract：
Microbial evolution within polymicrobial communities is a complex process. Here, we report within-species diversification within multispecies microbial communities during experimental evolution with the nematode Caenorhabditis elegans. We describe morphological diversity in the target species Chryseobacterium gleum, which developed a novel colony morphotype in a small number of replicate communities. Alternate morphotypes coexisted with original morphotypes in communities, as well as in single-species experiments using evolved isolates. We found that the original and alternate morphotypes differed in motility and in spatial expansion in the presence of C. elegans. This study provides insight into the emergence and maintenance of intraspecies diversity in the context of microbial communities.
摘要：
微生物群落内的微生物进化是一个复杂的过程。在这里，我们报告了线虫秀丽隐杆线虫在实验进化过程中多物种微生物群落中的物种内多样化。我们描述了目标物种金黄杆菌的形态多样性，在少数复制群落中发展了一种新的殖民地形态。在社区中，替代形态类型与原始形态类型共存，以及使用进化分离物的单物种实验。我们发现，在秀丽隐杆线虫的存在下，原始和交替的形态类型在运动性和空间扩展方面有所不同。这项研究提供了在微生物群落背景下物种内多样性的出现和维持的见解。
