Parallel ecological and evolutionary responses to selection in a natural bacterial community

• 成果类型: Article
• 署名作者: Hesse, Elze; Lujan, Adela M.; O'Brien, Siobhan; Newbury, Arthur; McAvoy, Terence; Pascual, Jesica Soria; Bayer, Florian; Hodgson, David J.; Buckling, Angus
• 署名单位: University of Exeter; University of Exeter; Consejo Nacional de Investigaciones Cientificas y Tecnicas (CONICET); Catholic University of Cordoba; Catholic University of Cordoba; Trinity College Dublin
• 刊物名称: PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
• ISSN/ISSBN: 0027-13225
• DOI: 10.1073/pnas.2403577121
• 发表日期: 2024-09-03
• 关键词: promotes cooperation; social evolution; siderophores; DYNAMICS; COMPETITION; adaptation; diversity; BEHAVIOR

摘要

Evolution can occur over ecological timescales, suggesting a potentially important role for rapid evolution in shaping community trait distributions. However, evidence of concordant eco- evolutionary dynamics often comes from in vitro studies of highly simplified communities, and measures of ecological and evolutionary dynamics are rarely directly comparable. Here, we quantified how ecological species sorting and rapid evolution simultaneously shape community trait distributions by tracking within- and between- species changes in a key trait in a complex bacterial community. We focused on the production of siderophores; bacteria use these costly secreted metabolites to scavenge poorly soluble iron and to detoxify environments polluted with toxic nonferrous metals. We found that responses to copper- imposed selection within and between species were ultimately the same-intermediate siderophore levels were favored-and occurred over similar timescales. Despite being a social trait, this level of siderophore production was selected regardless of whether species evolved in isolation or in a community context. Our study suggests that evolutionary selection can play a pivotal role in shaping community trait distributions within natural, highly complex, bacterial communities. Furthermore, trait evolution may not always be qualitatively affected by interactions with other community members.