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Chromosomal-level genome and multi-omics dataset provides new insights into leaf pigmentation in Acer palmatum

文献类型： 外文期刊

作者： Chen, Zhu 1 ; Lu, Xiaoyu 2 ; Zhu, Lu 3 ; Afzal, Shah Faheem 1 ; Zhou, Jingbo 5 ; Ma, Qiuyue 3 ; Li, Qianzhong 3 ; Chen, Jinhuan 4 ; Ren, Jie 1 ;

作者机构： 1.Anhui Acad Agr Sci, Inst Agr Engn, Hefei 230031, Peoples R China

2.Anhui Finance & Trade Vocat Coll, Cultural & Creat Coll, Hefei 230601, Peoples R China

3.Jiangsu Acad Agr Sci, Inst Leisure Agr, Nanjing 210014, Peoples R China

4.Beijing Forestry Univ, Coll Biol Sci & Biotechnol, Beijing 100083, Peoples R China

5.Anhui Vocat & Tech Coll Forestry, Hefei 230601, Peoples R China

关键词： Acer palmatum; Aceraceae; Chromosome -scale genome; Anthocyanin

期刊名称：INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES （ 影响因子：8.2； 五年影响因子：7.8 ）

ISSN： 0141-8130

年卷期： 2023 年 227 卷

页码：

收录情况： SCI

摘要： Acer palmatum (A. palmatum), a deciduous shrub or small arbour which belongs to Acer of Aceraceae, is an excellent greening species as well as a beautiful ornamental plant. In this study, a high-quality chromosome-level reference genome for A. palmatum was constructed using Oxford Nanopore sequencing and Hi-C technology. The assembly genome was-745.78 Mb long with a contig N50 length of 3.20 Mb, and 95.30 % (710.71 Mb) of the assembly was anchored into 13 pseudochromosomes. A total of 28,559 protein-coding genes were obtained,-90.02 % (25,710) of which could be functionally annotated. The genomic evolutionary analysis revealed that A. palmatum is most closely related to A. yangbiense and A. truncatum, and underwent only an ancient gamma whole-genome duplication event. Despite lacking a recent independent WGD, 25,795 (90.32 %) genes of A. palmatum were duplicated, and the unique/expanded gene families were linked with genes involved in plant -pathogen interaction and several metabolic pathways, which might underpin adaptability. A combined genomic, transcriptomic, and metabolomic analysis related to the biosynthesis of anthocyanin in leaves during the different season were characterized. The results indicate that the dark-purple colouration of the leaves in spring was caused by a high amount of anthocyanins, especially delphinidin and its derivatives; and the red colouration of the leaves in autumn by a high amount of cyanidin 3-O-glucoside. In conclusion, these valuable multi-omic resources offer important foundations to explore the molecular regulation mechanism in leaf colouration and also provide a platform for the scientific and efficient utilization of A. palmatum.

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