Overview
Genome Size
240 Mb
Date performed
2021
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Publication
Abstract
Background: Prunus species, including Chinese wild peach (Prunus davidiana), are economically important fruit crops, but the genetic mechanisms underlying their favorable traits are poorly understood due to limited genomic resources. Structural variations (SVs) play a significant role in phenotypic variation, yet their impacts in these species remain underexplored.
Results: A high-quality de novo genome assembly for Chinese wild peach (Prunus davidiana) was generated as part of the five Prunus species assemblies. This genome, along with others, contains 25,333−27,826 protein-coding genes and 43.30−50.13% repeat sequences. Phylogenetic analysis revealed that plum diverged from its common ancestor with peach, wild peach species like Prunus davidiana, and apricot ~7 million years ago. Population-level analyses of peach accessions identified various genetic variations, including SVs, and SV-based GWAS uncovered associations between SVs and key agronomic traits, providing insights into trait genetic basis relevant to Prunus davidiana.
Conclusions: The genome assembly of Chinese wild peach (Prunus davidiana) contributes valuable genomic resources for functional genomics, evolutionary research, and agronomic improvement of Prunus species. The study demonstrates that focusing on SV data can drive functional discoveries, aiding in understanding and improving traits in Chinese wild peach and related species.
