Genome re-sequencing reveals the evolutionary history of peach fruit edibility

作者：Yu Yang, Jun Fu, Yaoguang Xu, Jiewei Zhang, Fei Ren, Hongwei Zhao, Shilin Tian, Wei Guo, Xiaolong Tu, Jing Zhao, Dawei Jiang, Jianbo Zhao, Weiying Wu, Gaochao Wang, Ma RongCai, Quan Jiang, Jianhua Wei, Hua Xie · 发表于：Nature Communications · 年份：2018 · DOI：10.1038/s41467-018-07744-3 · 被引用次数：176 · 研究领域：Plant Physiology and Cultivation Studies、Horticultural and Viticultural Research、Plant Pathogens and Fungal Diseases

Peach (Prunus persica) is an economically important fruit crop and a well-characterized model for studying Prunus species. Here we explore the evolutionary history of peach using a large-scale SNP data set generated from 58 high-coverage genomes of cultivated peach and closely related relatives, including 44 newly re-sequenced accessions and 14 accessions from a previous study. Our analyses suggest that peach originated about 2.47 Mya in southwest China in glacial refugia generated by the uplift of the Tibetan plateau. Our exploration of genomic selection signatures and demographic history supports the hypothesis that frugivore-mediated selection occurred several million years before the eventual human-mediated domestication of peach. We also identify a large set of SNPs and/or CNVs, and candidate genes associated with fruit texture, taste, size, and skin color, with implications for genomic-selection breeding in peach. Collectively, this study provides valuable information for understanding the evolution and domestication of perennial fruit tree crops.