Genomic insights into the recent chromosome reduction of autopolyploid sugarcane Saccharum spontaneum
文献类型: 外文期刊
作者: Zhang, Qing 1 ; Qi, Yiying 1 ; Pan, Haoran 1 ; Tang, Haibao 1 ; Wang, Gang 1 ; Hua, Xiuting 2 ; Wang, Yongjun 1 ; Lin, Lianyu 1 ; Li, Zhen 1 ; Li, Yihan 1 ; Yu, Fan 2 ; Yu, Zehuai 2 ; Huang, Yongji 3 ; Wang, Tianyou 1 ; Ma, Panpan 1 ; Dou, Meijie 1 ; Sun, Zongyi 4 ; Wang, Yibin 1 ; Wang, Hengbo 1 ; Zhang, Xingtan 1 ; Yao, Wei 1 ; Wang, Yuntong 5 ; Liu, Xinlong 6 ; Wang, Maojun 7 ; Wang, Jianping 8 ; Deng, Zuhu 1 ; Xu, Jingsheng 1 ; Yang, Qinghui 9 ; Liu, ZhongJian 10 ; Chen, Baoshan 2 ; Zhang, Muqing 2 ; Ming, Ray 11 ; Zhang, Jisen 1 ;
作者机构: 1.Fujian Agr & Forestry Univ, Fujian Prov Key Lab Haixia Appl Plant Syst Biol, Key Lab Sugarcane Biol & Genet Breeding,Coll Life, Natl Engn Res Ctr Sugarcane,Ctr Genom & Biotechno, Fuzhou, Peoples R China
2.Guangxi Univ, Guangxi Key Lab Sugarcane Biol, Nanning, Peoples R China
3.Minjiang Univ, Inst Oceanog, Marine Biotechnol Ctr, Fuzhou, Peoples R China
4.GrandOm Biosci, Beijing, Peoples R China
5.Biomarker Technol Corp, Beijing, Peoples R China
6.Yunnan Acad Agr Sci, Sugarcane Res Inst, Yunnan Key Lab Sugarcane Genet Improvement, Kaiyuan, Peoples R China
7.Huazhong Agr Univ, Natl Key Lab Crop Genet Improvement, Wuhan, Peoples R China
8.Univ Florida, Dept Agron, Gainesville, FL 32611 USA
9.Yunnan Agr Univ, Sugarcane Res Inst, Kunming, Yunnan, Peoples R China
10.Fujian Agr & Forestry Univ, Coll Landscape Architecture, Key Lab Natl Forestry & Grassland Adm Orchid Cons, Fuzhou, Peoples R China
11.Univ Illinois, Dept Plant Biol, Urbana, IL USA
期刊名称:NATURE GENETICS ( 影响因子:41.307; 五年影响因子:39.321 )
ISSN: 1061-4036
年卷期: 2022 年 54 卷 6 期
页码:
收录情况: SCI
摘要: Saccharum spontaneum is a founding Saccharum species and exhibits wide variation in ploidy levels. We have assembled a high-quality autopolyploid genome of S. spontaneum Np-X (2n = 4x = 40) into 40 pseudochromosomes across 10 homologous groups, that better elucidates recent chromosome reduction and polyploidization that occurred circa 1.5 million years ago (Mya). One paleo-duplicated chromosomal pair in Saccharum, NpChr5 and NpChr8, underwent fission followed by fusion accompanied by centromeric split around 0.80 Mya. We inferred that Np-X, with x = 10, most likely represents the ancestral karyotype, from which x = 9 and x = 8 evolved. Resequencing of 102 S. spontaneum accessions revealed that S. spontaneum originated in northern India from an x = 10 ancestor, which then radiated into four major groups across the Indian subcontinent, China, and Southeast Asia. Our study suggests new directions for accelerating sugarcane improvement and expands our knowledge of the evolution of autopolyploids. A high-quality autopolyploid genome of Saccharum spontaneum accession Np-X and resequencing of 102 accessions provide insights into the recent chromosome reduction and polyploidization in Saccharum.
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