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Latent homology and convergent regulatory evolution underlies the repeated emergence of yeasts Public Deposited

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  • Convergent evolution is common throughout the tree of life, but the molecular mechanisms causing similar phenotypes to appear repeatedly are obscure. Yeasts have arisen in multiple fungal clades, but the genetic causes and consequences of their evolutionary origins are unknown. Here we show that the potential to develop yeast forms arose early in fungal evolution and became dominant independently in multiple clades, most likely via parallel diversification of Zn-cluster transcription factors, a fungal-specific family involved in regulating yeast–filamentous switches. Our results imply that convergent evolution can happen by the repeated deployment of a conserved genetic toolkit for the same function in distinct clades via regulatory evolution. We suggest that this mechanism might be a common source of evolutionary convergence even at large time scales.
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  • Nagy, L. G., Ohm, R. A., Kovács, G. M., Floudas, D., Riley, R., Gácser, A., ... & Hibbett, D. S. (2014). Latent homology and convergent regulatory evolution underlies the repeated emergence of yeasts. Nature Communications, 5, 4471. doi:10.1038/ncomms5471
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  • 5
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  • This work was supported under the NSF grants DEB-1208719 and DEB-0933081 (both to D.S.H.).The work conducted by the US Department of Energy Joint Genome Institute issupported by the Office of Science of the US Department of Energy under Contract No.DE-AC02-05CH11231. G.M.K. and A.G. are supported by a János Bolyai ResearchScholarship of the Hungarian Academy of Sciences. F.M.M. is supported by the Labof Excellence ARBRE (ANR-11-LABX-0002-01). M.S. is supported by the HSRF grantOTKA 101323.
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