Year: 2008
Type: article
Abstract: The [PSI(+)] prion in yeast has been shown to improve short-term growth in some environments, but its effects on rates of adaptation have not been assessed before now. We adapted three yeast genotypes to three novel environments in the presence and the absence of the prion. There were significant differences in adaptation rates between lines with different combinations of genotype, environment, and prion status. We saw no consistent effect, however, of the prion on the rate of adaptation to new environments. A major factor affecting the rate of adaptation was initial fitness in the new environment: lines with low initial fitness evolved faster than lines with high initial fitness.
Source: Journal of Evolutionary Biology
Authors: S. B. JOSEPH, M. KIRKPATRICK
Institution: The University of Texas at Austin
Language: English
Subfield: Genetics
Domain: Life Sciences
Open Access status: bronze
OpenAlex ID: W2017294034