数字农科院2.0

Genomes of autotetraploid wild and cultivated Ziziphus mauritiana reveal polyploid evolution and crop domestication

文献类型： 外文期刊

作者： Guo, Mingxin;Bi, Guiqi;Wang, Huan;Ren, Hui;Chen, Jiaying;Lian, Qun;Wang, Xiaomei;Fang, Weikuan;Zhang, Jiangjiang;Dong, Zhaonian;Pang, Yi;Zhang, Quanling;Huang, Sanwen;Yan, Jianbin;Zhao, Xusheng

作者机构：

关键词： （2-2-2）

期刊名称： PLANT PHYSIOLOGY

ISSN： 0032-0889

年卷期： 2024 年

页码：

收录情况： SCIE（2024版）

摘要： Indian jujube (Ziziphus mauritiana) holds a prominent position in the global fruit and pharmaceutical markets. Here, we report the assemblies of haplotype-resolved, telomere-to-telomere genomes of autotetraploid wild and cultivated Indian jujube plants using a 2-stage assembly strategy. The generation of these genomes permitted in-depth investigations into the divergence and evolutionary history of this important fruit crop. Using a graph-based pan-genome constructed from 8 monoploid genomes, we identified structural variation (SV)-FST hotspots and SV hotspots. Gap-free genomes provide a means to obtain a global view of centromere structures. We identified presence-absence variation-related genes in 4 monoploid genomes (cI, cIII, wI, and wIII) and resequencing populations. We also present the population structure and domestication trajectory of the Indian jujube based on the resequencing of 73 wild and cultivated accessions. Metabolomic and transcriptomic analyses of mature fruits of wild and cultivated accessions unveiled the genetic basis underlying loss of fruit astringency during domestication of Indian jujube. This study reveals mechanisms underlying the divergence, evolution, and domestication of the autotetraploid Indian jujube and provides rich and reliable genetic resources for future research. A 2-stage assembly strategy reveals the assemblies of haplotype-resolved, telomere-to-telomere genomes of autotetraploid wild and cultivated Indian jujube plants.

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