数字农科院2.0

Genome Assembly and Population Resequencing Reveal the Geographical Divergence of Shanmei (Rubus corchorifolius)

文献类型： 外文期刊

作者： Yang, Yinqing;Zhang, Kang;Xiao, Ya;Zhang, Lingkui;Huang, Yile;Li, Xing;Chen, Shumin;Peng, Yansong;Yang, Shuhua;Liu, Yongbo;Cheng, Feng

作者机构：

关键词： Rubus corchorifolius;Genome assembly;Resequencing;Divergence;Genome evolution

期刊名称： GENOMICS PROTEOMICS & BIOINFORMATICS

ISSN： 1672-0229

年卷期： 2022 年 20 卷 6 期

页码：

收录情况： SCIE（2023版） ; ; CSCD（2023-2024年度） ; ; 科技核心（2023版）

摘要： Rubus corchorifolius (Shanmei or mountain berry, 2n = 14) is widely distributed in China, and its fruits possess high nutritional and medicinal values. Here, we reported a high -quality chromosome-scale genome assembly of Shanmei, with contig size of 215.69 Mb and 26,696 genes. Genome comparison among Rosaceae species showed that Shanmei and Fupenzi (Rubus chingii Hu) were most closely related, followed by blackberry (Rubus occidentalis), and that environmental adaptation-related genes were expanded in the Shanmei genome. Further resequenc-ing of 101 samples of Shanmei collected from four regions in the provinces of Yunnan, Hunan, Jiangxi, and Sichuan in China revealed that among these samples, the Hunan population of Shanmei possessed the highest diversity and represented the more ancestral population. Moreover, the Yunnan population underwent strong selection based on the nucleotide diversity, linkage dise-quilibrium, and historical effective population size analyses. Furthermore, genes from candidate genomic regions that showed strong divergence were significantly enriched in the flavonoid biosyn-thesis and plant hormone signal transduction pathways, indicating the genetic basis of adaptation of Shanmei to the local environment. The high-quality assembled genome and the variome dataset of Shanmei provide valuable resources for breeding applications and for elucidating the genome evo-lution and ecological adaptation of Rubus species.

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