Estimation of genome sizes of six Acer species by flow cytometry and K-mer analysis

MA Qiuyue, WANG Yuxiao, LI Qianzhong, LI Shushun, WEN Jing, ZHU Lu, YAN Kunyuan, DU Yiming, XIE Zhijun, LI Shuxian, OUYANG Fangqun, LU Chengdai

JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2023, Vol. 47 ›› Issue (1) : 163-170.

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JOURNAL OF NANJING FORESTRY UNIVERSITY ›› 2023, Vol. 47 ›› Issue (1) : 163-170. DOI: 10.12302/j.issn.1000-2006.202110030

Estimation of genome sizes of six Acer species by flow cytometry and K-mer analysis

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Abstract

【Objective】 There are variety species in the genus Acer, which have broad prospects for development and application in the ornamental, oil and medicinal fields. To provide an important theoretical reference for molecular biology and cytology studies of Acer, the genome sizes of six species of Acer were estimated using flow cytometry and K-mer analysis. 【Method】 Fresh leaves of six species of Acer were collected, and woody plant buffer(WPB) was used as a nuclear dissociation solution, Glycine max ‘Polanka’ and Zea mays CE-777 as internal standard. Six genome sizes were estimated by flow cytometry and K-mer analysis. 【Result】 The results of flow cytometry showed that the genomes of Acer henryi, A. buergerianum, A. elegantulum, A. griseum, A. pentaphyllum and A. tegmentosum were successfully estimated. The genome sizes of those were (691.12±8.69),(863.90±8.69), (896.50±4.35), (893.24±8.69), (766.10±8.69) and (1 154.04±13.04) Mb, respectively. The K-mer analysis showed that they were 561.72, 743.00, 777.87, 771.51, 650.64 and 1 103.46 Mb, respectively. The hybridity rate was about 1.00%、1.24%、1.31%、1.08%、0.28% and 0.81%, respectively,which were slightly smaller than that flow cytometry. 【Conclusion】 The results of this study could enrich the Acer gene database and provide important foundations for genomic and molecular cytogenetics studies within this genus.

Key words

Acer / genome size / flow cytometry / K-mer analysis

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MA Qiuyue , WANG Yuxiao , LI Qianzhong , et al . Estimation of genome sizes of six Acer species by flow cytometry and K-mer analysis[J]. JOURNAL OF NANJING FORESTRY UNIVERSITY. 2023, 47(1): 163-170 https://doi.org/10.12302/j.issn.1000-2006.202110030

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