Altered chromatin compaction and histone methylation drive non-additive gene expression in an interspecific Arabidopsis hybrid.

ABSTRACT:

Background

The merging of two diverged genomes can result in hybrid offspring that phenotypically differ greatly from both parents. In plants, interspecific hybridization plays important roles in evolution and speciation. In addition, many agricultural and horticultural species are derived from interspecific hybridization. However, the detailed mechanisms responsible for non-additive phenotypic novelty in hybrids remain elusive.

Results

In an interspecific hybrid between Arabidopsis thaliana and A. lyrata, the vast majority of genes that become upregulated or downregulated relative to the parents originate from A. thaliana. Among all differentially expressed A. thaliana genes, the majority is downregulated in the hybrid. To understand why parental origin affects gene express

SUBMITTER: Zhu W 

PROVIDER: S-EPMC5568265 | biostudies-literature | 2017 Aug

REPOSITORIES: biostudies-literature