Complete mitogenome assembly of Selenicereus monacanthus revealed its molecular features, genome evolution, and phylogenetic implications
文献类型： 外文期刊
作者： Lu, Guilong 1 ; Wang, Wenhua 2 ; Mao, Juan 2 ; Li, Qing 2 ; Que, Youxiong 3 ;
作者机构： 1.Henan Inst Sci & Technol, Coll Hort & Landscape Architecture, Xinxiang 453003, Peoples R China
2.Tibet Acad Agr & Anim Husb Sci, Inst Vegetables, Lhasa 890032, Peoples R China
3.Fujian Agr & Forestry Univ, Coll Agr, Fuzhou 350002, Peoples R China
关键词： Selenicereus Monacanthus; Mitogenome; RNA editing; Gene loss; Evolution analysis
期刊名称：BMC PLANT BIOLOGY （ 影响因子：5.3； 五年影响因子：5.9 ）
ISSN： 1471-2229
年卷期： 2023 年 23 卷 1 期
页码：
收录情况： SCI
摘要： Background Mitochondria are the powerhouse of the cell and are critical for plant growth and development. Pitaya (Selenicereus or Hylocereus) is the most important economic crop in the family Cactaceae and is grown worldwide, however its mitogenome is unreported.Results This study assembled the complete mitogenome of the red skin and flesh of pitaya (Selenicereus monacanthus). It is a full-length, 2,290,019 bp circular molecule encoding 59 unique genes that only occupy 2.17% of the entire length. In addition, 4,459 pairs of dispersed repeats (>= 50 bp) were identified, accounting for 84.78% of the total length, and three repeats (394,588, 124,827, and 13,437 bp) mediating genomic recombination were identified by long read mapping and Sanger sequencing. RNA editing events were identified in all 32 protein-coding genes (PCGs), among which four sites (nad1-2, nad4L-2, atp9-copy3-223, and ccmFC-1309) were associated with the initiation or termination of PCGs. Seventy-eight homologous fragments of the chloroplast genome were identified in the mitogenome, the longest having 4,523 bp. In addition, evolutionary analyses suggest that S. monacanthus may have undergone multiple genomic reorganization events during evolution, with the loss of at least nine PCGs (rpl2, rpl10, rps2, rps3, rps10, rps11, rps14, rps19, and sdh3).Conclusions This study revealed the genetic basis of the S. monacanthus mitogenome, and provided a scientific basis for further research on phenotypic traits and germplasm resource development.
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