Adaptive Prediction Emerges Over Short Evolutionary Time Scales.
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Abstract |
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Adaptive prediction is a capability of diverse organisms, including microbes, to sense a cue and prepare in advance to deal with a future environmental challenge. Here, we investigated the timeframe over which adaptive prediction emerges when an organism encounters an environment with novel structure. We subjected yeast to laboratory evolution in a novel environment with repetitive, coupled exposures to a neutral chemical cue (caffeine), followed by a sublethal dose of a toxin (5-FOA), with an interspersed requirement for uracil prototrophy to counter-select mutants that gained constitutive 5-FOA resistance. We demonstrate the remarkable ability of yeast to internalize a novel environmental pattern within 50-150 generations by adaptively predicting 5-FOA stress upon sensing caffeine. We also demonstrate how novel environmental structure can be internalized by coupling two unrelated response networks, such as the response to caffeine and signaling-mediated conditional peroxisomal localization of proteins. |
Year of Publication |
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2017
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Journal |
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Genome biology and evolution
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Volume |
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9
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Issue |
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6
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Number of Pages |
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1616-1623
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Date Published |
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2017
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URL |
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https://academic.oup.com/gbe/article-lookup/doi/10.1093/gbe/evx116
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DOI |
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10.1093/gbe/evx116
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Short Title |
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Genome Biol Evol
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