气候变化领域集成服务门户(CCPortal): The chromosome-scale genome of Kobresia myosuroides sheds light on karyotype evolution and recent diversification of a dominant herb group on the Qinghai-Tibet Plateau

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DOI	10.1093/dnares/dsac049
	The chromosome-scale genome of Kobresia myosuroides sheds light on karyotype evolution and recent diversification of a dominant herb group on the Qinghai-Tibet Plateau
	Ning, Yu; Li, Yang; Dong, Shu Bin; Yang, Hong Guo; Li, Chun Yi; Xiong, Biao; Yang, Jun; Hu, Yu Kun; Mu, Xian Yun; Xia, Xiao Fei
发表日期	2023
ISSN	1340-2838
EISSN	1756-1663
卷号	30 期号:1
英文摘要	Kobresia species are common in meadows on the Qinghai-Tibet Plateau. They are important food resources for local livestock, and serve a critical foundation for ecosystem integration. Genetic resources of Kobresia species are scarce. Here, we generated a chromosome-level genome assembly for K. myosuroides (Cyperaceae), using PacBio long-reads, Illumina short-reads, and Hi-C technology. The final assembly had a total size of 399.9 Mb with a contig N50 value of 11.9 Mb. The Hi-C result supported a 29 pseudomolecules model which was in consistent with cytological results. A total of 185.5 Mb (44.89% of the genome) transposable elements were detected, and 26,748 protein-coding genes were predicted. Comparative analysis revealed that Kobresia plants have experienced recent diversification events during the late Miocene to Pliocene. Karyotypes analysis indicated that the fission and fusion of chromosomes have been a major driver of speciation, which complied with the lack of whole-genome duplication (WGD) in K. myosuroides genome. Generally, this high-quality reference genome provides insights into the evolution of alpine sedges, and may be helpful to endemic forage improvement and alpine ecosystem preservation.
关键词	Kobresia Carex genome karyotype evolution alpine
英文关键词	ACCURATE; PROGRAM; ADAPTATION; SELECTION
WOS研究方向	Genetics & Heredity
WOS记录号	WOS:000912360500004
来源期刊	DNA RESEARCH
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/283308
作者单位	Chinese Academy of Forestry; Chinese Academy of Forestry; Institute of Wetland Research, CAF; Huzhou University; Beijing Forestry University; Guizhou University; Beijing Forestry University
推荐引用方式 GB/T 7714	Ning, Yu,Li, Yang,Dong, Shu Bin,et al. The chromosome-scale genome of Kobresia myosuroides sheds light on karyotype evolution and recent diversification of a dominant herb group on the Qinghai-Tibet Plateau[J],2023,30(1).
APA	Ning, Yu.,Li, Yang.,Dong, Shu Bin.,Yang, Hong Guo.,Li, Chun Yi.,...&Xia, Xiao Fei.(2023).The chromosome-scale genome of Kobresia myosuroides sheds light on karyotype evolution and recent diversification of a dominant herb group on the Qinghai-Tibet Plateau.DNA RESEARCH,30(1).
MLA	Ning, Yu,et al."The chromosome-scale genome of Kobresia myosuroides sheds light on karyotype evolution and recent diversification of a dominant herb group on the Qinghai-Tibet Plateau".DNA RESEARCH 30.1(2023).