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The genome of the warm-season turfgrass African bermudagrass (Cynodon transvaalensis)

Authors
  • Cui, Fengchao1
  • Taier, Geli1
  • Li, Manli1
  • Dai, Xiaoxia1
  • Hang, Nan1
  • Zhang, Xunzhong2
  • Wang, Xiangfeng3
  • Wang, Kehua1
  • 1 China Agricultural University, Beijing, 100193, China , Beijing (China)
  • 2 Virginia Polytechnic Institute and State University, Blacksburg, VA, 24061, USA , Blacksburg (United States)
  • 3 China Agricultural University, Beijing, 100913, China , Beijing (China)
Type
Published Article
Journal
Horticulture Research
Publisher
Nature Publishing Group UK
Publication Date
May 01, 2021
Volume
8
Issue
1
Identifiers
DOI: 10.1038/s41438-021-00519-w
Source
Springer Nature
License
Green

Abstract

Cynodon species can be used for multiple purposes and have high economic and ecological significance. However, the genetic basis of the favorable agronomic traits of Cynodon species is poorly understood, partially due to the limited availability of genomic resources. In this study, we report a chromosome-scale genome assembly of a diploid Cynodon species, C. transvaalensis, obtained by combining Illumina and Nanopore sequencing, BioNano, and Hi-C. The assembly contains 282 scaffolds (~423.42 Mb, N50 = 5.37 Mb), which cover ~93.2% of the estimated genome of C. transvaalensis (~454.4 Mb). Furthermore, 90.48% of the scaffolds (~383.08 Mb) were anchored to nine pseudomolecules, of which the largest was 60.78 Mb in length. Evolutionary analysis along with transcriptome comparison provided a preliminary genomic basis for the adaptation of this species to tropical and/or subtropical climates, typically with dry summers. The genomic resources generated in this study will not only facilitate evolutionary studies of the Chloridoideae subfamily, in particular, the Cynodonteae tribe, but also facilitate functional genomic research and genetic breeding in Cynodon species for new leading turfgrass cultivars in the future.

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