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The Draft Genome of a Flat Peach (Prunus persica L. cv. '124 Pan') Provides Insights into Its Good Fruit Flavor Traits

文献类型： 外文期刊

作者： Zhang, Aidi 1 ; Zhou, Hui 1 ; Jiang, Xiaohan 1 ; Han, Yuepeng 1 ; Zhang, Xiujun 1 ;

作者机构： 1.Chinese Acad Sci, Wuhan Bot Garden, Key Lab Plant Germplasm Enhancement & Specialty A, Wuhan 430000, Peoples R China

2.Chinese Acad Sci, Core Bot Gardens, Ctr Econ Bot, Wuhan 430074, Peoples R China

3.Anhui Acad Agr Sci, Inst Hort, Key Lab Genet Improvement & Ecophysiol Hort Crops, Hefei 230031, Peoples R China

4.Univ Chinese Acad Sci, Beijing 100049, Peoples R China

关键词： flat peach; genome assembly; genome evolution; fruit flavor; terpene synthase genes

期刊名称：PLANTS-BASEL （ 影响因子：2.762； ）

ISSN：

年卷期： 2021 年 10 卷 3 期

页码：

收录情况： SCI

摘要： The flat peach has become more and more popular worldwide for its fruit quality with relatively low acidity, high sugar content and rich flavor. However, the draft genome assembly of flat peach is still unavailable and the genetic basis for its fruit flavor remains unclear. In this study, the draft genome of a flat peach cultivar '124 Pan' was assembled by using a hybrid assembly algorithm. The final assembly resulted in a total size of 206 Mb with a N50 of 26.3 Mb containing eight chromosomes and seven scaffolds. Genome annotation revealed that a total of 25,233 protein-coding genes were predicted with comparable gene abundance among the sequenced peach species. The phylogenetic tree and divergence times inferred from 572 single copy genes of 13 plant species confirmed that Prunus ferganensis was the ancestor of the domesticated peach. By comparing with the genomes of Prunus persica (Lovell) and Prunus ferganensis, the expansion of genes encoding enzymes involved in terpene biosynthesis was found, which might contribute to the good fruit flavor traits of '124 Pan'. The flat peach draft genome assembly obtained in this study will provide a valuable genomic resource for peach improvement and molecular breeding.

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