Fitness costs and benefits vary for two facultative Burkholderia symbionts of the social amoeba, Dictyostelium discoideum.

摘要: Hosts and their associated microbes can enter into different relationships, which range from mutualism, where both partners benefit, to exploitation, one partner benefits at the expense of other. Many host-microbe relationships have been presumed be mutualistic, but frequently only host, not microbial symbiont, considered. Here, we address this issue by looking effect host association on fitness two facultative members Dictyostelium discoideum microbiome (Burkholderia agricolaris Burkholderia hayleyella). Using indicators bacterial fitness, growth rate abundance, determined D. fitness. In liquid culture, found that amoebas lowered species. soil microcosms, tracked abundance grown with without over a month B. hayleyella had larger populations when associating while was significantly affected. Overall, find pay cost associate discoideum, also benefit under some conditions. Understanding how varies in symbionts will help us understand persistence host-symbiont relationships. Open research badges This article has earned an Data Badge for making publicly available digitally-shareable data necessary reproduce reported results. The is https://openscholarship.wustl.edu/data/15/.