Absence of major epigenetic and transcriptomic changes accompanying the interspecific cross between peach and almond

We analysed the DNA methylation and transcription levels of transposable elements and genes in leaves of Prunus persica and Prunus dulcis and in their F1 hybrid using high-throughput sequencing tecnhologies. We can conclude that the merging of the two parental genomes in the P. persica x P. dulcis hybrid does not result in a “genomic shock” with significant changes in the DNA methylation or in the transcription. Leaves of Prunus dulcis cv Texas, Prunus persica cv Early Gold and one interspecific F1 hybrid were collected. For the analysis of DNA methylation, we used two biological replicates per genotype. For RNA-seq analysis, we used three biological replicates per genotype.