文献类型：期刊文献

英文题名：Characterization and phylogenetic analysis of the complete mitochondrial genome sequence of Diospyros oleifera, the first representative from the family Ebenaceae

作者：Xu, Yang[1] Dong, Yi[1] Cheng, Wenqiang[1] Wu, Kaiyun[1] Gao, Haidong[2] Liu, Lei[2] Xu, Lei[2] Gong, Bangchu[1]

第一作者：徐阳

通信作者：Gong, BC[1]|[a00054c9262859c460f14]龚榜初;

机构：[1]Chinese Acad Forestry, Res Inst Subtrop Forestry, Hangzhou 311400, Peoples R China;[2]Genepioneer Biotechnol Co Ltd, Nanjing 210023, Peoples R China

年份：2022

卷号：8

期号：7

外文期刊名：HELIYON

收录：;WOS:【SCI-EXPANDED(收录号:WOS:000843521600006)】；

基金：Funding statement Ph.D. Yang Xu was supported by National Key R & D Program of China [2018YFD1000606] . Ph.D. Yang Xu was supported by National Key R & D Program of China [2019YFD1000600] . Bangchu Gong was supported by Key Project for New Agricultural Cultivar Breeding in Zhejiang Province, China [2021C02066-10] .

语种：英文

外文关键词：Diospyros oleifera; Mitochondrial genome; Phylogenetic analysis

摘要：Plant mitochondrial genomes are a valuable source of genetic information for a better understanding of phylo-genetic relationships. However, no mitochondrial genome of any species in Ebenaceae has been reported. In this study, we reported the first mitochondrial genome of an Ebenaceae model plant Diospyros oleifera. The mitoge-nome was 493,958 bp in length, contained 39 protein-coding genes, 27 transfer RNA genes, and 3 ribosomal RNA genes. The rps2 and rps11 genes were missing in the D. oleifera mt genome, while the rps10 gene was identified. The length of the repetitive sequence in the D. oleifera mt genome was 31 kb, accounting for 6.33%. A clear bias in RNA-editing sites were found in the D. oleifera mt genome. We also detected 28 chloroplast-derived fragments significantly associated with D. oleifera mt genes, indicating intracellular tRNA genes transferred frequently from chloroplasts to mitochondria in D. oleifera. Phylogenetic analysis based on the mt genomes of D. oleifera and 27 other taxa reflected the exact evolutionary and taxonomic status of D. oleifera. Ka/Ks analysis revealed that 95.16% of the protein-coding genes in the D. oleifera mt genome had undergone negative selections. But, the rearrangement of mitochondrial genes has been widely occur among D. oleifera and these observed species. These results will lay the foundation for identifying further evolutionary relationships within Ebenaceae.