Analyses of mitochondrial genomes of the genus Ammopiptanthus provide new insights into the evolution of legume plants
Publication in refereed journal

替代計量分析
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其它資訊
摘要The genus Ammopiptanthus is mainly distributed in the semi-arid regions of northwest China. It only contains two species: A. mongolicus and A. nanus. They exhibit similar morphological characteristics, but little is known about their genetic differences. We performed de novo sequencing and mitochondrial genome assembly and found that both species contain 36 protein-coding genes, 3 rRNA, and 16 tRNA genes. The comparison of A. mongolicus and A. nanus mitogenomes revealed a 6.5-kb region loss in A. nanus mitogenome, which was replaced by a 1.5-kb different sequence element. Other small variations between the two species include 25 SNPs, 4 deletions, and 2 insertions. Meta-analyses indicated that 34% of the A. mongolicus mitogenome was unique to Ammopiptanthus and has no similarity with any other known legume mitogenomes. These unique sequences are mainly distributed in intergenic regions. Gene gain and loss analysis showed that this mitogenome gained two genes, rps7 and sdh4, during evolution, with rps7 transferred from the chloroplast genome. Selective pressure analysis implied that the atp8 gene was under positive selection. Our study established high-quality reference mitogenomes for the genus Ammopiptanthus, revealed novel genetic differences between A. mongolicus and A. nanus, and provided new insights into the evolution of legume plants.
出版社接受日期02.04.2019
著者Lei Feng, Na Li, Wei Yang, Yan Li, Chun-Ming Wang, Suk-Wah Tong, Jun-Xian He
期刊名稱Plant Systematics and Evolution
出版年份2019
月份5
日期1
卷號305
期次5
出版社Springer Verlag (Germany)
出版地Australia
頁次385 - 399
國際標準期刊號0378-2697
電子國際標準期刊號2199-6881
語言美式英語
關鍵詞Ammopiptanthus mongolicus · Ammopiptanthus nanus · Legume evolution · Mitochondrial genome

上次更新時間 2020-18-09 於 03:37