Chromosome-scale assembly and analysis of biomass crop Miscanthus lutarioriparius genome

Jiashun Miao, Qi Feng, Yan Li, Qiang Zhao, Congcong Zhou, Hengyun Lu, Danlin Fan, Juan Yan, Yiqi Lu, Qilin Tian, Wenjun Li, Qijun Weng, Lei Zhang, Yan Zhao, Tao Huang, Laigeng Li, Xuehui Huang, Tao Sang () and Bin Han ()
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Jiashun Miao: Chinese Academy of Sciences
Qi Feng: Chinese Academy of Sciences
Yan Li: Chinese Academy of Sciences
Qiang Zhao: Chinese Academy of Sciences
Congcong Zhou: Chinese Academy of Sciences
Hengyun Lu: Chinese Academy of Sciences
Danlin Fan: Chinese Academy of Sciences
Juan Yan: Chinese Academy of Sciences
Yiqi Lu: Chinese Academy of Sciences
Qilin Tian: Chinese Academy of Sciences
Wenjun Li: Chinese Academy of Sciences
Qijun Weng: Chinese Academy of Sciences
Lei Zhang: Chinese Academy of Sciences
Yan Zhao: Chinese Academy of Sciences
Tao Huang: Chinese Academy of Sciences
Laigeng Li: Chinese Academy of Sciences
Xuehui Huang: Shanghai Normal University
Tao Sang: Chinese Academy of Sciences
Bin Han: Chinese Academy of Sciences

Nature Communications, 2021, vol. 12, issue 1, 1-13

Abstract: Abstract Miscanthus, a rhizomatous perennial plant, has great potential for bioenergy production for its high biomass and stress tolerance. We report a chromosome-scale assembly of Miscanthus lutarioriparius genome by combining Oxford Nanopore sequencing and Hi-C technologies. The 2.07-Gb assembly covers 96.64% of the genome, with contig N50 of 1.71 Mb. The centromere and telomere sequences are assembled for all 19 chromosomes and chromosome 10, respectively. Allotetraploid origin of the M. lutarioriparius is confirmed using centromeric satellite repeats. The tetraploid genome structure and several chromosomal rearrangements relative to sorghum are clearly demonstrated. Tandem duplicate genes of M. lutarioriparius are functional enriched not only in terms related to stress response, but cell wall biosynthesis. Gene families related to disease resistance, cell wall biosynthesis and metal ion transport are greatly expanded and evolved. The expansion of these families may be an important genomic basis for the enhancement of remarkable traits of M. lutarioriparius.

Date: 2021
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DOI: 10.1038/s41467-021-22738-4

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