Biology Department, Emory University, Atlanta, GA, 30322, United States.
Physics Department, Emory University, Atlanta, GA, 30322, United States.
FEMS Microbiol Ecol. 2022 Oct 27;98(11). doi: 10.1093/femsec/fiac115.
Adaptation of replicate microbial communities frequently produces shared trajectories of community composition and structure. However, divergent adaptation of individual community members can occur and is associated with community-level divergence. The extent to which community-based adaptation of microbes should be convergent when community members are similar but not identical is, therefore, not well-understood. In these experiments, adaptation of combinatorial minimal communities of bacteria with the model host Caenorhabditis elegans produces structurally similar communities over time, but with divergent adaptation of member taxa and differences in community-level resistance to invasion. These results indicate that community-based adaptation from taxonomically similar starting points can produce compositionally similar communities that differ in traits of member taxa and in ecological properties.
复制微生物群落的适应通常会产生群落组成和结构的共同轨迹。然而，个体群落成员的趋异适应也会发生，并与群落水平的趋异相关。因此，当群落成员相似但不完全相同时，微生物基于群落的适应应该是趋同的程度还不是很清楚。在这些实验中，组合最小细菌群落与模式宿主秀丽隐杆线虫的适应随着时间的推移产生了结构上相似的群落，但成员分类群的适应存在分歧，群落水平对入侵的抵抗力也存在差异。这些结果表明，从分类学上相似的起点进行基于群落的适应可以产生组成上相似的群落，但成员分类群的特征和生态特性存在差异。
