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Effects of the [PSI+] prion on rates of adaptation in yeast.

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.

journal_name

J Evol Biol

journal_title

Journal of evolutionary biology

authors

Joseph SB,Kirkpatrick M

doi

10.1111/j.1420-9101.2008.01515.x

subject

Has Abstract

pub_date

2008-05-01 00:00:00

pages

773-80

issue

3

eissn

1010-061X

issn

1420-9101

pii

JEB1515

journal_volume

21

pub_type

杂志文章

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