Abstract
Akebia trifoliata (Lardizabalaceae) is an important medicinal plant with multiple pharmacological effects. However, the lack of genomic information had limited the further excavation and utilization of this plant. An initial survey of the genome A. trifoliata was performed by next-generation sequencing, and then the genome size was inferred by flow cytometry. The whole genome survey of A. trifoliata generated 61.90 Gb of sequence data with approximately 95.51 × coverage. The genome size, heterozygosity and GC content obtained by k-mer analysis were almost 648.07 Mb, 0.72% and 36.11%, respectively. The genome size calculated by flow cytometry was 685.77 Mb, which was consistent with the results of genome survey. A total of 851,957 simple sequence repeats (SSR) were identified in the A. trifoliata genome. Twenty-eight phenotypic traits and thirty pairs of SSR primers were selected for the analysis of the genetic diversity of 43 accessions of cultivated A. trifoliata. The results showed that 216 bands were generated by 30 pairs of SSR primers, of which 189 (87.5%) were polymorphic. In addition, the phenotypes and SSR markers were used for cluster analysis of 43 cultivated accessions. The results of the two clustering methods were partially consistent. The genome survey of A. trifoliata demonstrated that the genome size of this plant was about 648.07 Mb. In the present study, the size and characteristics of the genome of A. trifoliata were reported for the first time, which greatly enriched the genomic resources of A. trifoliata for the further research and utilization.
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Data availability
The genome sequence reads obtained by Illumina Hiseq 2500 are available at NCBI-SRA. The Bioproject accessions number is PRJNA667569, and the Biosample accessions number is SAMN16378157. The Experiment number is SRX9274273/ The Run number is SRR12805495.
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This work was supported by the Key Program of Science and Technology of Shaanxi Province, China (Project No.2013K14-03-01).
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Conceived and designed the experiments: ZZ. Conducted the experiments: ZZ BL WZ. Analyzed the data: JWZ QY ZZ. Contributed reagents/materials/analysis tools: ZZ. Wrote the paper: JWZ.
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Zhang, Z., Zhang, J., Yang, Q. et al. Genome survey sequencing and genetic diversity of cultivated Akebia trifoliata assessed via phenotypes and SSR markers. Mol Biol Rep 48, 241–250 (2021). https://doi.org/10.1007/s11033-020-06042-w
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DOI: https://doi.org/10.1007/s11033-020-06042-w