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Haplotype-resolved T2T genome assembly of the pear cultivar 'Danxiahong'

文献类型： 外文期刊

作者： Zhang, Xiangzhan 1 ; Bian, Jianxin 3 ; Wang, Yanan 1 ; Wang, Lei 4 ; Wang, Long 1 ; Wang, Suke 1 ; Su, Yanli 1 ; He, Hang 3 ; Xue, Huabai 1 ;

作者机构： 1.Chinese Acad Agr Sci, Zhengzhou Fruit Res Inst, Natl Key Lab Germplasm Innovat & Utilizat Hort Cro, Zhengzhou 450009, Henan, Peoples R China

2.Chinese Acad Agr Sci, Zhongyuan Res Ctr, Xinxiang 453500, Henan, Peoples R China

3.Peking Univ, Shandong Lab Adv Agr Sci Weifang, Inst Adv Agr Sci, Weifang 261325, Shandong, Peoples R China

4.Xinjiang Agr Univ, Coll Hort, Urumqi 830052, Peoples R China

期刊名称：SCIENTIFIC DATA （ 影响因子：6.9； 五年影响因子：8.7 ）

ISSN：

年卷期： 2025 年 12 卷 1 期

页码：

收录情况： SCI

摘要： Pear (Pyrus L) is one of the most significant fruit crops globally, recognized for its substantial economic value and potential health benefits. 'Danxiahong' is an elite pear cultivar in the north of China, characterized by its flushed fruit skin and excellent inner quality. In this study, we utilized PacBio HiFi long reads, Hi-C reads and second-generation sequencing data to assemble the genome of 'Danxiahong'. Two telomere-to-telomere gap-free and haplotype-resolved pear genomes were successfully assembled, with the sizes of 495.37 Mb and 501.60 Mb, and contig N50 of 28.97 Mb and 29.32 Mb. Approximately 62.50% and 62.76% repeat sequences were mapped to the 17 chromosomes for each haplotype. Gene annotations analysis identified a total of 39,936 genes in Hap1 and 39,707 genes in Hap2, respectively. The haplotype-resolved genome of 'Danxiahong' significantly contributes to the investigation of genes and molecular mechanisms related to fruit quality, while also facilitating the Multi-Omics analysis, such as comparative genomics, transcriptomics, proteomics, and allelic expression research.

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