Unveiling the Genome of the Diploid Wild Sugarcane Relative Narenga porphyrocoma (Hance) Bor
文献类型： 外文期刊
作者： Li, Haibi 1 ; Gui, Yiyun 1 ; Wei, Jinju 1 ; Zhu, Kai 1 ; Zhou, Hui 1 ; Zhang, Ronghua 1 ; Huang, Dongliang 1 ; Huang, Sijie 1 ; Li, Shuangcai 1 ; Zhang, Jisen 3 ; Li, Yangrui 1 ; Liu, Xihui 1 ;
作者机构： 1.Guangxi Acad Agr Sci, Sugarcane Res Inst, Guangxi Key Lab Sugarcane Genet Improvement, Minist Agr & Rural Affairs, Nanning 530007, Peoples R China
2.Guangxi Acad Agr Sci, Guangxi South Subtrop Agr Sci Res Inst, Chongzuo 532415, Peoples R China
3.Guangxi Univ, Coll Agr, State Key Lab Conservat & Utilizat Subtrop Agrobio, Nanning 530004, Peoples R China
关键词：
期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：4.9； 五年影响因子：5.7 ）
ISSN： 1661-6596
年卷期： 2025 年 26 卷 13 期
页码：
收录情况： SCI
摘要： Narenga porphyrocoma (Hance) Bor is a close relative of sugarcane, with traits such as drought resistance, robustness, early maturity, and disease resistance. In this study, we report the first genome assembly of N. porphyrocoma (Hance) Bor GXN1, a diploid species with a chromosomal count of 2n = 30. We assembled the genome into 15 pseudochromosomes with an N50 of 128.80 Mp, achieving a high level of completeness (99.0%) using benchmarking universal single-copy orthologs (BUSCO) assessment. The genome was approximately 1.8 Gb. Our analysis identified a substantial proportion of repetitive sequences, primarily long terminal repeats (LTRs), contributing to 69.12% of the genome. In total, 70,680 protein-coding genes were predicted and annotated, focusing on genes related to drought resistance. Transcriptome analysis under drought stress revealed the key gene families involved in plant physiological rhythms and hormone signal transduction, including aquaporins, late embryogenesis abundant proteins, and heat shock proteins. This research reveals the genome of the diploid wild sugarcane relative N. porphyrocoma (Hance) Bor, encouraging future studies on gene function, genome evolution, and genetic improvement of sugarcane.
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