Cis- and trans- regulatory divergence between progenitor species determines gene-expression novelty in Arabidopsis allopolyploids

ABSTRACT: Gene-expression divergence between species shapes morphological evolution, but the molecular basis is largely unknown. Here we show cis- and trans-regulatory elements and chromatin modifications on gene-expression diversity in genetically tractable Arabidopsis allotetraploids. In Arabidopsis thaliana and Arabidopsis arenosa, both cis and trans with predominant cis-regulatory effects mediate gene-expression divergence. The majority of genes with both cis- and trans-effects are subjected to compensating interactions and stabilizing selection. Interestingly, chromatin modifications correlate with cis - and trans -regulation. In F1 allotetraploids, Arabidopsis arenosa trans factors predominately affect allelic expression divergence. Arabidopsis arenosa trans factors tend to upregulate Arabidop

ORGANISM(S): Arabidopsis arenosa x Arabidopsis thaliana

SUBMITTER: Z. Jeffrey Chen 

PROVIDER: E-GEOD-29687 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress