Roles, Angela J., Assistant Professor of Biology; Rutter, M.T., Dworkin, I., Fenster, C.B., and Conner, J.K. (2016). Field measurements of genotype by environment interaction for fitness caused by spontaneous mutations in
Arabidopsis thaliana. Evolution 70, 1039-1050.
Partial abstract:
As the ultimate source of genetic diversity, spontaneous mutation is critical to the evolutionary process. The fitness effects of spontaneous mutations are almost always studied under controlled laboratory conditions rather than under the evolutionarily relevant conditions of the field. We studied the fitness effects of 25 generations of accumulated spontaneous mutations in
Arabidopsis thaliana in two geographically widely separated field environments, in Michigan and Virginia. We observed genotype-environment interactions in the fitness effects of new mutations, such that the effects of mutations in Michigan were a poor predictor of their effects in Virginia and vice versa. In particular, mutational variance for fitness was much larger in Virginia compared to Michigan. This strong genotype-environment interaction would increase the amount of genetic variation maintained by mutation-selection balance.
Full text online @OhioLINK Electronic Journal Center
Evolution - journal home page @Wiley Online Library
Learn more about the use of
A. thaliana (a small flowering weed) as a model organism for genetic studies at The Ohio State University
Arabidopsis Biological Resource Center.
Arabidopsis Protocols, 2nd ed., is online @Springer ebooks [
access through OBIS]
Learn more about the use of A. thaliana (a small flowering weed) as a model organism for genetic studies at The Ohio State University Arabidopsis Biological Resource Center.
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