Impact of natural genetic variation on the transcriptome of autotetraploid Arabidopsis thaliana.

ABSTRACT: Polyploidy, the presence of more than two complete sets of chromosomes in an organism, has significantly shaped the genomes of angiosperms during evolution. Two forms of polyploidy are often considered: allopolyploidy, which originates from interspecies hybrids, and autopolyploidy, which originates from intraspecies genome duplication events. Besides affecting genome organization, polyploidy generates other genetic effects. Synthetic allopolyploid plants exhibit considerable transcriptome alterations, part of which are likely caused by the reunion of previously diverged regulatory hierarchies. In contrast, autopolyploids have relatively uniform genomes, suggesting lower alteration of gene expression. To evaluate the impact of intraspecies genome duplication on the transcriptome, we generat

SUBMITTER: Yu Z 

PROVIDER: S-EPMC2955106 | biostudies-literature | 2010 Oct

REPOSITORIES: biostudies-literature