Compensatory adaptation and diversification subsequent to evolutionary rescue in a model adaptive radiation
Abstract Biological populations may survive lethal environmental stress through evolutionary rescue. The rescued populations typically suffer a reduction in growth performance and harbor very low genetic diversity compared with their parental populations. The present study addresses how population s...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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Wiley
2021-07-01
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| Series: | Ecology and Evolution |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/ece3.7792 |
| _version_ | 1818453484641452032 |
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| author | Dong‐Hao Zhou Quan‐Guo Zhang |
| author_facet | Dong‐Hao Zhou Quan‐Guo Zhang |
| author_sort | Dong‐Hao Zhou |
| collection | DOAJ |
| description | Abstract Biological populations may survive lethal environmental stress through evolutionary rescue. The rescued populations typically suffer a reduction in growth performance and harbor very low genetic diversity compared with their parental populations. The present study addresses how population size and within‐population diversity may recover through compensatory evolution, using the experimental adaptive radiation of bacterium Pseudomonas fluorescens. We exposed bacterial populations to an antibiotic treatment and then imposed a one‐individual‐size population bottleneck on those surviving the antibiotic stress. During the subsequent compensatory evolution, population size increased and leveled off very rapidly. The increase of diversity was of slower paces and persisted longer. In the very early stage of compensatory evolution, populations of large sizes had a greater chance to diversify; however, this productivity–diversification relationship was not observed in later stages. Population size and diversity from the end of the compensatory evolution was not contingent on initial population growth performance. We discussed the possibility that our results be explained by the emergence of a “holey” fitness landscape under the antibiotic stress. |
| first_indexed | 2024-12-14T21:39:43Z |
| format | Article |
| id | doaj.art-6bb08d53cf1d491689e4a454165219fd |
| institution | Directory Open Access Journal |
| issn | 2045-7758 |
| language | English |
| last_indexed | 2024-12-14T21:39:43Z |
| publishDate | 2021-07-01 |
| publisher | Wiley |
| record_format | Article |
| series | Ecology and Evolution |
| spelling | doaj.art-6bb08d53cf1d491689e4a454165219fd2022-12-21T22:46:29ZengWileyEcology and Evolution2045-77582021-07-0111149689969610.1002/ece3.7792Compensatory adaptation and diversification subsequent to evolutionary rescue in a model adaptive radiationDong‐Hao Zhou0Quan‐Guo Zhang1State Key Laboratory of Earth Surface Processes and Resource Ecology and MOE Key Laboratory for Biodiversity Science and Ecological Engineering, College of Life Sciences Beijing Normal University Beijing ChinaState Key Laboratory of Earth Surface Processes and Resource Ecology and MOE Key Laboratory for Biodiversity Science and Ecological Engineering, College of Life Sciences Beijing Normal University Beijing ChinaAbstract Biological populations may survive lethal environmental stress through evolutionary rescue. The rescued populations typically suffer a reduction in growth performance and harbor very low genetic diversity compared with their parental populations. The present study addresses how population size and within‐population diversity may recover through compensatory evolution, using the experimental adaptive radiation of bacterium Pseudomonas fluorescens. We exposed bacterial populations to an antibiotic treatment and then imposed a one‐individual‐size population bottleneck on those surviving the antibiotic stress. During the subsequent compensatory evolution, population size increased and leveled off very rapidly. The increase of diversity was of slower paces and persisted longer. In the very early stage of compensatory evolution, populations of large sizes had a greater chance to diversify; however, this productivity–diversification relationship was not observed in later stages. Population size and diversity from the end of the compensatory evolution was not contingent on initial population growth performance. We discussed the possibility that our results be explained by the emergence of a “holey” fitness landscape under the antibiotic stress.https://doi.org/10.1002/ece3.7792adaptive radiationenvironmental stressexperimental evolutionfitness landscapePseudomonas fluorescens |
| spellingShingle | Dong‐Hao Zhou Quan‐Guo Zhang Compensatory adaptation and diversification subsequent to evolutionary rescue in a model adaptive radiation Ecology and Evolution adaptive radiation environmental stress experimental evolution fitness landscape Pseudomonas fluorescens |
| title | Compensatory adaptation and diversification subsequent to evolutionary rescue in a model adaptive radiation |
| title_full | Compensatory adaptation and diversification subsequent to evolutionary rescue in a model adaptive radiation |
| title_fullStr | Compensatory adaptation and diversification subsequent to evolutionary rescue in a model adaptive radiation |
| title_full_unstemmed | Compensatory adaptation and diversification subsequent to evolutionary rescue in a model adaptive radiation |
| title_short | Compensatory adaptation and diversification subsequent to evolutionary rescue in a model adaptive radiation |
| title_sort | compensatory adaptation and diversification subsequent to evolutionary rescue in a model adaptive radiation |
| topic | adaptive radiation environmental stress experimental evolution fitness landscape Pseudomonas fluorescens |
| url | https://doi.org/10.1002/ece3.7792 |
| work_keys_str_mv | AT donghaozhou compensatoryadaptationanddiversificationsubsequenttoevolutionaryrescueinamodeladaptiveradiation AT quanguozhang compensatoryadaptationanddiversificationsubsequenttoevolutionaryrescueinamodeladaptiveradiation |