Department of Biology, Emory University, 1510 Clifton Road NE #2006, Atlanta, GA 30322, United States.
Department of Physics, Emory University, 400 Dowman Dr, Atlanta, GA 30322, United States.
FEMS Microbiol Ecol. 2024 Apr 10;100(5). doi: 10.1093/femsec/fiae039.
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.
多微生物群落中的微生物进化是一个复杂的过程。在这里，我们报告了在秀丽隐杆线虫的实验进化过程中，多物种微生物群落中种内多样化的情况。我们描述了目标物种黄单胞菌属中出现的形态多样性，该物种在少数重复群落中形成了一种新的菌落形态。在群落中以及使用进化分离株进行的单物种实验中，共存着原始形态和其他形态。我们发现，原始形态和其他形态在运动性和在存在秀丽隐杆线虫时的空间扩展方面存在差异。本研究为在微生物群落背景下种内多样性的出现和维持提供了深入了解。
