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Assembly and comparative analysis of the first complete mitochondrial genome of Acer truncatum Bunge: a woody oil-tree species producing nervonic acid

文献类型： 外文期刊

作者： Ma, Qiuyue 1 ; Wang, Yuxiao 2 ; Li, Shushun 1 ; Wen, Jing 1 ; Zhu, Lu 1 ; Yan, Kunyuan 1 ; Du, Yiming 1 ; Ren, Jie 3 ; Li, Shuxian 2 ; Chen, Zhu 3 ; Bi, Changwei 2 ; Li, Qianzhong 1 ;

作者机构： 1.Jiangsu Acad Agr Sci, Inst Leisure Agr, Nanjing 210014, Peoples R China

2.Nanjing Forestry Univ, Nanjing 210037, Peoples R China

3.Anhui Acad Agr Sci, Inst Agr Engn, 40 Nongkenanlu, Hefei 230031, Anhui, Peoples R China

关键词： Acer truncatum; Mitochondrial genome; Repeats; Phylogenetic analysis

期刊名称：BMC PLANT BIOLOGY （ 影响因子：5.26； 五年影响因子：5.761 ）

ISSN： 1471-2229

年卷期： 2022 年 22 卷 1 期

页码：

收录情况： SCI

摘要： Background Acer truncatum (purpleblow maple) is a woody tree species that produces seeds with high levels of valuable fatty acids (especially nervonic acid). The species is admired as a landscape plant with high developmental prospects and scientific research value. The A. truncatum chloroplast genome has recently been reported; however, the mitochondrial genome (mitogenome) is still unexplored. Results We characterized the A. truncatum mitogenome, which was assembled using reads from PacBio and Illumina sequencing platforms, performed a comparative analysis against different species of Acer. The circular mitogenome of A. truncatum has a length of 791,052 bp, with a base composition of 27.11% A, 27.21% T, 22.79% G, and 22.89% C. The A. truncatum mitogenome contains 62 genes, including 35 protein-coding genes, 23 tRNA genes and 4 rRNA genes. We also examined codon usage, sequence repeats, RNA editing and selective pressure in the A. truncatum mitogenome. To determine the evolutionary and taxonomic status of A. truncatum, we conducted a phylogenetic analysis based on the mitogenomes of A. truncatum and 25 other taxa. In addition, the gene migration from chloroplast and nuclear genomes to the mitogenome were analyzed. Finally, we developed a novel NAD1 intron indel marker for distinguishing several Acer species. Conclusions In this study, we assembled and annotated the mitogenome of A. truncatum, a woody oil-tree species producing nervonic acid. The results of our analyses provide comprehensive information on the A. truncatum mitogenome, which would facilitate evolutionary research and molecular barcoding in Acer.

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