1999
DOI: 10.1890/0012-9658(1999)080[1168:etouco]2.0.co;2
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Evolutionary Trade-Offs Under Conditions of Resource Abundance and Scarcity: Experiments With Bacteria

Abstract: It is often hypothesized that bacteria that are superior competitors when resources are abundant must be inferior competitors when resources are scarce, and vice versa. Most previous studies that sought to test this trade‐off hypothesis compared kinetic parameters of extant strains of bacteria, with mixed results. We employed an experimental approach in which bacterial populations were propagated for many generations under two distinct regimes and their evolutionary responses were monitored. Thirty‐six populat… Show more

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Cited by 75 publications
(32 citation statements)
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“…We found that thermally fluctuating environment selected for bacterial clones that were capable to grow faster and to reach higher yield in most of the assessed temperatures compared to clones that had evolved in constant temperature conditions. As the clones from fluctuating environment had also higher yield, our results support the hypothesis that fluctuating temperature can select for true generalists (Levins 1968;Huey and Kingsolver 1993) instead of causing a life-history shift between strategies to grow fast in high resource conditions (maximum growth rate) and to grow efficiently under low resources (yield) (Velicer and Lenski 1999). Evidence for thermal generalism in the previous studies (Bennet and Lenski 1993;Leroi et al 1994;Ketola et al 2004;Duncan et al 2011; for a review see Kassen 2002) has not been as evident as in our study.…”
Section: Evolution Of Thermal Generalismsupporting
confidence: 81%
“…We found that thermally fluctuating environment selected for bacterial clones that were capable to grow faster and to reach higher yield in most of the assessed temperatures compared to clones that had evolved in constant temperature conditions. As the clones from fluctuating environment had also higher yield, our results support the hypothesis that fluctuating temperature can select for true generalists (Levins 1968;Huey and Kingsolver 1993) instead of causing a life-history shift between strategies to grow fast in high resource conditions (maximum growth rate) and to grow efficiently under low resources (yield) (Velicer and Lenski 1999). Evidence for thermal generalism in the previous studies (Bennet and Lenski 1993;Leroi et al 1994;Ketola et al 2004;Duncan et al 2011; for a review see Kassen 2002) has not been as evident as in our study.…”
Section: Evolution Of Thermal Generalismsupporting
confidence: 81%
“…Furthermore, including microbial processes occurring at fine scales in large-scale models used for long-term predictions may imply to also take into account Darwinian evolution that may impact interactions between plant and soil microorganisms quite substantially (Barot, Loeuille, Perveen, Shahzad, & Fontaine, 2014). Indeed, micro-organism lifetime is short and Darwinian evolution may affect micro-organisms characteristics rapidly in response to environmental changes (Velicer & Lenski, 1999). Different approaches have been proposed for ocean that might be useful for soils too (Follows, Dutkiewicz, Grant, & Chisholm, 2007).…”
Section: Discussionmentioning
confidence: 99%
“…It is possible that antagonistic pleiotropy may be more frequent across diverse traits, such as those related to metabolism versus stress response. However, note that many studies focusing on adaptation in experimental microbial populations did not uncover tradeoffs in very diverse alternate environments (Björkman et al 1998;Velicer and Lenski 1999;Reynolds 2000;Anderson et al 2003;Lythgoe and Chao 2003;MacLean et al 2004;Gagneux 2006;Kassen and Bataillon 2006;Buckling et al 2007;Hughes et al 2007;Ward et al 2009;Bataillon et al 2011;Vogwill et al 2012;Jasmin and Zeyl 2013), suggesting that tradeoffs may be rare even across diverse traits. Finally, we caution that since our experiments were conducted for a relatively short time under controlled laboratory conditions, our results do not directly inform longer term phenomena such as ageing.…”
Section: Discussionmentioning
confidence: 99%