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A high-quality chromosome-scale genome assembly of blood orange, an important pigmented sweet orange variety

文献类型： 外文期刊

作者： Yang, Lei 1 ; Deng, Honghong 2 ; Wang, Min 1 ; Li, Shuang 1 ; Wang, Wu 1 ; Yang, Haijian 1 ; Pang, Changqing 3 ; Zhong, Qi 3 ; Sun, Yue 3 ; Hong, Lin 1 ;

作者机构： 1.Chongqing Acad Agr Sci, Fruit Tree Res Inst, Chongqing 401329, Peoples R China

2.Fujian Agr & Forestry Univ, Coll Hort, Fuzhou 350002, Peoples R China

3.Sichuan Agr Univ, Coll Hort, Chengdu 611130, Peoples R China

期刊名称：SCIENTIFIC DATA （ 影响因子：5.8； 五年影响因子：8.9 ）

ISSN：

年卷期： 2024 年 11 卷 1 期

页码：

收录情况： SCI

摘要： Blood orange (BO) is a rare red-fleshed sweet orange (SWO) with a high anthocyanin content and is associated with numerous health-related benefits. Here, we reported a high-quality chromosome-scale genome assembly for Neixiu (NX) BO, reaching 336.63 Mb in length with contig and scaffold N50 values of 30.6 Mb. Furthermore, 96% of the assembled sequences were successfully anchored to 9 pseudo-chromosomes. The genome assembly also revealed the presence of 37.87% transposon elements and 7.64% tandem repeats, and the annotation of 30,395 protein-coding genes. A high level of genome synteny was observed between BO and SWO, further supporting their genetic similarity. The speciation event that gave rise to the Citrus species predated the duplication event found within them. The genome-wide variation between NX and SWO was also compared. This first high-quality BO genome will serve as a fundamental basis for future studies on functional genomics and genome evolution.

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