10.5061/DRYAD.3N5TB2RHQ
Zhou, Dong-Hao
0000-0002-1204-1374
Beijing Normal University
Zhang, Quan-Guo
Beijing Normal University
Data from: Compensatory adaptation and diversification subsequent to
evolutionary rescue in a model adaptive radiation
Dryad
dataset
2021
FOS: Biological sciences
National Natural Science Foundation of China
https://ror.org/01h0zpd94
31725006
111 Project*
B13008
National Natural Science Foundation of China
https://ror.org/01h0zpd94
31670376
111 Project
B13008
2022-06-09T00:00:00Z
2022-06-09T00:00:00Z
en
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CC0 1.0 Universal (CC0 1.0) Public Domain Dedication
Biological populations may survive lethal environmental stress through
evolutionary rescue. The rescued populations typically suffer a reduction
in growth performance and harbour 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.