Environmentally induced changes in correlated responses to selection reveal variable pleiotropy across a complex genetic network.

ABSTRACT: Selection in novel environments can lead to a coordinated evolutionary response across a suite of characters. Environmental conditions can also potentially induce changes in the genetic architecture of complex traits, which in turn could alter the pattern of the multivariate response to selection. We describe a factorial selection experiment using the nematode Caenorhabditis remanei in which two different stress-related phenotypes (heat and oxidative stress resistance) were selected under three different environmental conditions. The pattern of covariation in the evolutionary response between phenotypes or across environments differed depending on the environment in which selection occurred, including asymmetrical responses to selection in some cases. These results indicate that variation

SUBMITTER: Sikkink KL 

PROVIDER: S-EPMC5523853 | biostudies-literature | 2015 May

REPOSITORIES: biostudies-literature