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A high-quality chromosome-level wild rice genome of Oryza coarctata

文献类型： 外文期刊

作者： Zhao, Hang 2 ; Wang, Wenzheng 3 ; Yang, Yirong 3 ; Wang, Zhiwei 3 ; Sun, Jing 3 ; Yuan, Kaijun 3 ; Rabbi, S. M. Hisam Al 1 ; Khanam, Munnujan 1 ; Kabir, Md. Shahjahan 1 ; Seraj, Zeba I. 4 ; Rahman, Md. Sazzadur 1 ; Zhang, Zhiguo 3 ;

作者机构： 1.Chinese Acad Agr Sci, Biotechnol Res Inst, Beijing 100081, Peoples R China

2.Univ Liege, TERRA Teaching & Res Ctr, Gembloux Agrobio Tech, Gembloux, Belgium

3.Chinese Acad Agr Sci, Bangladesh Rice Res Inst, Gazipur 1701, Bangladesh

4.Univ Dhaka, Dept Biochem & Mol Biol, Dhaka, Bangladesh

5.Duke Univ, Durham, NC USA

期刊名称：SCIENTIFIC DATA （ 影响因子：9.8； 五年影响因子：10.8 ）

ISSN：

年卷期： 2023 年 10 卷 1 期

页码：

收录情况： SCI

摘要： Oryza coarctata (2n = 4X = 48, KKLL) is an allotetraploid, undomesticated relative of rice and the only species in the genus Oryza with tolerance to high salinity and submergence. Therefore, it contains important stress and tolerance genes/factors for rice. The initial draft genome published was limited by data and technical restrictions, leading to an incomplete and highly fragmented assembly. This study reports a new, highly contiguous chromosome-level genome assembly and annotation of O. coarctata. PacBio high-quality HiFi reads generated 460 contigs with a total length of 573.4 Mb and an N50 of 23.1 Mb, which were assembled into scaffolds with Hi-C data, anchoring 96.99% of the assembly onto 24 chromosomes. The genome assembly comprises 45,571 genes, and repetitive content contributes 25.5% of the genome. This study provides the novel identification of the KK and LL genome types of the genus Oryza, leading to valuable insights into rice genome evolution. The chromosome-level genome assembly of O. coarctata is a valuable resource for rice research and molecular breeding.

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