Adaptive Prediction Emerges Over Short Evolutionary Time Scales.

TitleAdaptive Prediction Emerges Over Short Evolutionary Time Scales.
Publication TypeJournal Article
Year of Publication2017
JournalGenome biology and evolution
Volume9
Issue6
Pagination1616-1623
Date Published2017
Abstract

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.

URLhttps://academic.oup.com/gbe/article-lookup/doi/10.1093/gbe/evx116
DOI10.1093/gbe/evx116
Short TitleGenome Biol Evol
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