The chromosome-scale genome provides insights into pigmentation in Acer rubrum

文献类型： 外文期刊

第一作者： Chen, Zhu

作者： Chen, Zhu;Shi, Dan;Ren, Jie;Lu, Xiaoyu;Liao, Buyan;Han, Guomin;Fu, Songling;Li, Qianzhong;Ma, Qiuyue;Zhu, Lu;Zhu, Zhiyong;Luo, Xumei

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关键词： Acer rubrum L; Aceraceae; Chromosome -scale genome; Anthocyanin; Chlorophyll; Carotenoid

期刊名称：PLANT PHYSIOLOGY AND BIOCHEMISTRY （ 影响因子：5.437； 五年影响因子：5.731 ）

ISSN： 0981-9428

年卷期： 2022 年 186 卷

页码：

收录情况： SCI

摘要： Acer rubrum L. is one of the most prevalent ornamental species of the genus Acer, due to its straight and tall stems and beautiful leaf colors. For this study, the Oxford Nanopore platform and Hi-C technology were employed to obtain a chromosome-scale genome for A. rubrum. The genome size of A. rubrum was 1.69 Gb with an N50 of 549.44 Kb, and a total of 39 pseudochromosomes were generated with a 99.61% genome. The A. rubrum genome was predicted to have 64644 genes, of which 97.34% were functionally annotated. Genome annotation identified 67.14% as the transposable element (TE) repeat sequence, with long terminal repeats (LTR) being the richest (55.68%). Genome evolution analysis indicated that A. rubrum diverged from A. yangbiense -6.34 million years ago. We identified 13 genes related to pigment synthesis in A. rubrum leaves, where the expressions of four ArF3 ' H genes were consistent with the synthesis of cyanidin (a key pigment) in red leaves. Correlation analysis verified that the pigmentation of A. rubrum leaves was under the coordinated regulation of non-structural carbohydrates and hormones. The genomic sequence of A. rubrum will facilitate genomic breeding research for this species, while providing the valuable utilization of Aceraceae resources.

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