Cis-regulatory evolution of chalcone-synthase expression in the genus Arabidopsis.

ABSTRACT: The contribution of cis-regulation to adaptive evolutionary change is believed to be essential, yet little is known about the evolutionary rules that govern regulatory sequences. Here, we characterize the short-term evolutionary dynamics of a cis-regulatory region within and among two closely related species, A. lyrata and A. halleri, and compare our findings to A. thaliana. We focused on the cis-regulatory region of chalcone synthase (CHS), a key enzyme involved in the synthesis of plant secondary metabolites. We observed patterns of nucleotide diversity that differ among species but do not depart from neutral expectations. Using intra- and interspecific F1 progeny, we have evaluated functional cis-regulatory variation in response to light and herbivory, environmental cues, which are know

SUBMITTER: de Meaux J 

PROVIDER: S-EPMC1698642 | biostudies-literature | 2006 Dec

REPOSITORIES: biostudies-literature